./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur --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 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 --- 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-38b53e6 [2022-11-26 01:01:21,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:01:21,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:01:21,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:01:21,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:01:21,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:01:21,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:01:21,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:01:21,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:01:21,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:01:21,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:01:21,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:01:21,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:01:21,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:01:21,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:01:21,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:01:21,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:01:21,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:01:21,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:01:21,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:01:21,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:01:21,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:01:21,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:01:21,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:01:21,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:01:21,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:01:21,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:01:21,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:01:21,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:01:21,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:01:21,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:01:21,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:01:21,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:01:21,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:01:21,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:01:21,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:01:21,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:01:21,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:01:21,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:01:21,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:01:21,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:01:21,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-26 01:01:21,676 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:01:21,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:01:21,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:01:21,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:01:21,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:01:21,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:01:21,679 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:01:21,679 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:01:21,679 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:01:21,680 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:01:21,681 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:01:21,681 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:01:21,681 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:01:21,682 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:01:21,682 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:01:21,682 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:01:21,682 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:01:21,683 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:01:21,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:01:21,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:01:21,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:01:21,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:01:21,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:01:21,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:01:21,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:01:21,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:01:21,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:01:21,686 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 01:01:21,687 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:01:21,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:01:21,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:01:21,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:01:21,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:01:21,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:01:21,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:01:21,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:01:21,690 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:01:21,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:01:21,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:01:21,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:01:21,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:01:21,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:01:21,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:01:21,691 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_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 [2022-11-26 01:01:21,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:01:22,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:01:22,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:01:22,019 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:01:22,019 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:01:22,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2022-11-26 01:01:25,128 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:01:25,343 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:01:25,343 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2022-11-26 01:01:25,350 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/data/c5f775488/5bd5c046b0f84328a372d8b100e2873f/FLAGfa8f1bbf4 [2022-11-26 01:01:25,365 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/data/c5f775488/5bd5c046b0f84328a372d8b100e2873f [2022-11-26 01:01:25,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:01:25,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:01:25,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:01:25,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:01:25,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:01:25,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76afcefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25, skipping insertion in model container [2022-11-26 01:01:25,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:01:25,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:01:25,562 WARN L237 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_f1e2a5be-72ff-4997-8485-ba713d0b8173/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2022-11-26 01:01:25,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:01:25,582 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:01:25,595 WARN L237 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_f1e2a5be-72ff-4997-8485-ba713d0b8173/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i[873,886] [2022-11-26 01:01:25,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:01:25,610 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:01:25,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25 WrapperNode [2022-11-26 01:01:25,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:01:25,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:01:25,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:01:25,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:01:25,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,638 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2022-11-26 01:01:25,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:01:25,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:01:25,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:01:25,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:01:25,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,658 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:01:25,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:01:25,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:01:25,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:01:25,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (1/1) ... [2022-11-26 01:01:25,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:01:25,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:25,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:01:25,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:01:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:01:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:01:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:01:25,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:01:25,847 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:01:25,853 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:01:25,979 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:01:26,004 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:01:26,004 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 01:01:26,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:01:26 BoogieIcfgContainer [2022-11-26 01:01:26,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:01:26,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:01:26,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:01:26,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:01:26,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:01:25" (1/3) ... [2022-11-26 01:01:26,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0c9ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:01:26, skipping insertion in model container [2022-11-26 01:01:26,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:01:25" (2/3) ... [2022-11-26 01:01:26,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0c9ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:01:26, skipping insertion in model container [2022-11-26 01:01:26,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:01:26" (3/3) ... [2022-11-26 01:01:26,017 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark38_conjunctive.i [2022-11-26 01:01:26,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:01:26,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-26 01:01:26,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:01:26,091 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;@5beab556, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:01:26,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-26 01:01:26,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:01:26,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:26,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:01:26,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:26,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:26,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2181983, now seen corresponding path program 1 times [2022-11-26 01:01:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:26,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26349608] [2022-11-26 01:01:26,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:26,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:26,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:26,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26349608] [2022-11-26 01:01:26,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26349608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:26,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:26,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:01:26,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667946781] [2022-11-26 01:01:26,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:26,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:01:26,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:26,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:01:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:01:26,453 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:26,518 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2022-11-26 01:01:26,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:01:26,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:01:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:26,528 INFO L225 Difference]: With dead ends: 17 [2022-11-26 01:01:26,528 INFO L226 Difference]: Without dead ends: 14 [2022-11-26 01:01:26,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:01:26,534 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:26,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:01:26,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-26 01:01:26,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-26 01:01:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-26 01:01:26,567 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2022-11-26 01:01:26,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:26,567 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-11-26 01:01:26,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-26 01:01:26,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:01:26,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:26,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:01:26,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:01:26,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:26,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:26,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2182862, now seen corresponding path program 1 times [2022-11-26 01:01:26,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:26,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433653902] [2022-11-26 01:01:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:26,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:26,606 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:26,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433653902] [2022-11-26 01:01:26,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433653902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:26,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:26,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:01:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858179978] [2022-11-26 01:01:26,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:26,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:01:26,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:26,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:01:26,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:01:26,609 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:26,632 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-26 01:01:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:01:26,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:01:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:26,634 INFO L225 Difference]: With dead ends: 25 [2022-11-26 01:01:26,634 INFO L226 Difference]: Without dead ends: 24 [2022-11-26 01:01:26,634 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 [2022-11-26 01:01:26,635 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:26,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:01:26,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-26 01:01:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2022-11-26 01:01:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-26 01:01:26,641 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 4 [2022-11-26 01:01:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:26,641 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-26 01:01:26,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-26 01:01:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 01:01:26,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:26,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 01:01:26,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 01:01:26,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:26,644 INFO L85 PathProgramCache]: Analyzing trace with hash 67641523, now seen corresponding path program 1 times [2022-11-26 01:01:26,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:26,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417056331] [2022-11-26 01:01:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:26,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:26,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:26,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417056331] [2022-11-26 01:01:26,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417056331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:26,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:26,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:01:26,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638926320] [2022-11-26 01:01:26,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:26,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:01:26,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:26,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:01:26,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:01:26,763 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:26,796 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-11-26 01:01:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:01:26,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 01:01:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:26,797 INFO L225 Difference]: With dead ends: 21 [2022-11-26 01:01:26,798 INFO L226 Difference]: Without dead ends: 20 [2022-11-26 01:01:26,798 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 [2022-11-26 01:01:26,800 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:26,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:01:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-26 01:01:26,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-11-26 01:01:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-26 01:01:26,805 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2022-11-26 01:01:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:26,806 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-26 01:01:26,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-26 01:01:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 01:01:26,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:26,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 01:01:26,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 01:01:26,807 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:26,808 INFO L85 PathProgramCache]: Analyzing trace with hash 67668783, now seen corresponding path program 1 times [2022-11-26 01:01:26,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:26,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698925929] [2022-11-26 01:01:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:26,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:26,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:26,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698925929] [2022-11-26 01:01:26,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698925929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:26,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:26,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:01:26,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895540655] [2022-11-26 01:01:26,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:26,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:01:26,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:26,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:01:26,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:01:26,849 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:26,870 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-11-26 01:01:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:01:26,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 01:01:26,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:26,871 INFO L225 Difference]: With dead ends: 24 [2022-11-26 01:01:26,871 INFO L226 Difference]: Without dead ends: 21 [2022-11-26 01:01:26,872 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 [2022-11-26 01:01:26,873 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:26,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 16 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:01:26,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-26 01:01:26,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2022-11-26 01:01:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-26 01:01:26,878 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2022-11-26 01:01:26,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:26,879 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-26 01:01:26,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-26 01:01:26,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 01:01:26,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:26,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 01:01:26,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 01:01:26,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:26,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:26,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2096887265, now seen corresponding path program 1 times [2022-11-26 01:01:26,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:26,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404412096] [2022-11-26 01:01:26,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:26,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:26,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:26,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404412096] [2022-11-26 01:01:26,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404412096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:26,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:26,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:01:26,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753089274] [2022-11-26 01:01:26,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:26,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:01:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:26,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:01:26,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:01:26,932 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:26,961 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-26 01:01:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 01:01:26,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-26 01:01:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:26,962 INFO L225 Difference]: With dead ends: 17 [2022-11-26 01:01:26,963 INFO L226 Difference]: Without dead ends: 15 [2022-11-26 01:01:26,963 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 [2022-11-26 01:01:26,964 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:26,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:01:26,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-26 01:01:26,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-26 01:01:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-26 01:01:26,969 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2022-11-26 01:01:26,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:26,970 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-26 01:01:26,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:26,970 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-26 01:01:26,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 01:01:26,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:26,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:26,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 01:01:26,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:26,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:26,972 INFO L85 PathProgramCache]: Analyzing trace with hash 578995829, now seen corresponding path program 1 times [2022-11-26 01:01:26,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:26,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352410955] [2022-11-26 01:01:26,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:26,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:27,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:27,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:27,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352410955] [2022-11-26 01:01:27,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352410955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:01:27,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:01:27,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 01:01:27,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860885521] [2022-11-26 01:01:27,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:01:27,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 01:01:27,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 01:01:27,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 01:01:27,021 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:27,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:27,048 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-11-26 01:01:27,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 01:01:27,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 01:01:27,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:27,049 INFO L225 Difference]: With dead ends: 18 [2022-11-26 01:01:27,049 INFO L226 Difference]: Without dead ends: 17 [2022-11-26 01:01:27,050 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 [2022-11-26 01:01:27,051 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:27,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:01:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-26 01:01:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-26 01:01:27,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:27,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-26 01:01:27,056 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2022-11-26 01:01:27,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:27,056 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-26 01:01:27,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:27,057 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-26 01:01:27,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 01:01:27,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:27,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:27,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 01:01:27,058 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:27,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:27,058 INFO L85 PathProgramCache]: Analyzing trace with hash 276126747, now seen corresponding path program 1 times [2022-11-26 01:01:27,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:27,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856501651] [2022-11-26 01:01:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:27,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:27,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:27,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856501651] [2022-11-26 01:01:27,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856501651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:27,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146410580] [2022-11-26 01:01:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:27,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:27,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:27,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:27,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 01:01:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:27,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 01:01:27,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:27,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:27,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146410580] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:27,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1098917447] [2022-11-26 01:01:27,314 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:01:27,315 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:27,319 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:27,325 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:27,326 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:27,743 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:28,077 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '346#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:01:28,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:28,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:28,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-26 01:01:28,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579341772] [2022-11-26 01:01:28,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:28,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 01:01:28,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:28,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 01:01:28,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:01:28,080 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:28,114 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2022-11-26 01:01:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 01:01:28,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 01:01:28,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:28,116 INFO L225 Difference]: With dead ends: 42 [2022-11-26 01:01:28,116 INFO L226 Difference]: Without dead ends: 41 [2022-11-26 01:01:28,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-26 01:01:28,117 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:28,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 31 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:01:28,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-26 01:01:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2022-11-26 01:01:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-11-26 01:01:28,123 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2022-11-26 01:01:28,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:28,124 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-11-26 01:01:28,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-11-26 01:01:28,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 01:01:28,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:28,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:01:28,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-26 01:01:28,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:28,331 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:28,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:28,332 INFO L85 PathProgramCache]: Analyzing trace with hash 276154007, now seen corresponding path program 1 times [2022-11-26 01:01:28,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:28,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993821513] [2022-11-26 01:01:28,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:28,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:28,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:28,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993821513] [2022-11-26 01:01:28,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993821513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:28,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100431597] [2022-11-26 01:01:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:28,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:28,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:28,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:28,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 01:01:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:28,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 01:01:28,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:28,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:28,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100431597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:28,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [887903775] [2022-11-26 01:01:28,522 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-26 01:01:28,524 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:28,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:28,525 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:28,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:28,762 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:29,116 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '495#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-26 01:01:29,116 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:29,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:29,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-26 01:01:29,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784490949] [2022-11-26 01:01:29,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:29,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 01:01:29,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:29,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 01:01:29,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-26 01:01:29,118 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:29,183 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-11-26 01:01:29,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 01:01:29,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 01:01:29,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:29,184 INFO L225 Difference]: With dead ends: 37 [2022-11-26 01:01:29,185 INFO L226 Difference]: Without dead ends: 31 [2022-11-26 01:01:29,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-26 01:01:29,186 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:29,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 35 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:01:29,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-26 01:01:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-11-26 01:01:29,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-11-26 01:01:29,191 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 10 [2022-11-26 01:01:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:29,191 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-11-26 01:01:29,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-11-26 01:01:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-26 01:01:29,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:29,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1] [2022-11-26 01:01:29,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 01:01:29,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:29,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:29,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1884514165, now seen corresponding path program 1 times [2022-11-26 01:01:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:29,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241843336] [2022-11-26 01:01:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:29,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:29,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:29,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241843336] [2022-11-26 01:01:29,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241843336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:29,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998059310] [2022-11-26 01:01:29,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:29,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:29,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:29,502 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:29,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 01:01:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:29,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 01:01:29,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:29,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:29,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:29,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998059310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:29,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [668552010] [2022-11-26 01:01:29,685 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:01:29,686 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:29,686 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:29,686 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:29,686 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:29,842 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:30,101 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '691#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-26 01:01:30,101 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:30,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:30,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-26 01:01:30,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959443376] [2022-11-26 01:01:30,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:30,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 01:01:30,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:30,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 01:01:30,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-26 01:01:30,104 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:30,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:30,281 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2022-11-26 01:01:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 01:01:30,282 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-26 01:01:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:30,283 INFO L225 Difference]: With dead ends: 54 [2022-11-26 01:01:30,283 INFO L226 Difference]: Without dead ends: 53 [2022-11-26 01:01:30,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2022-11-26 01:01:30,284 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 35 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:30,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 41 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:01:30,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-26 01:01:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2022-11-26 01:01:30,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.205128205128205) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:30,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-11-26 01:01:30,301 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 17 [2022-11-26 01:01:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:30,302 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-11-26 01:01:30,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-26 01:01:30,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-26 01:01:30,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:30,305 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-26 01:01:30,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 01:01:30,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:30,510 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:30,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2044036503, now seen corresponding path program 2 times [2022-11-26 01:01:30,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:30,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575406673] [2022-11-26 01:01:30,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:30,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:30,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575406673] [2022-11-26 01:01:30,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575406673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:30,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357710374] [2022-11-26 01:01:30,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:01:30,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:30,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:30,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:30,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 01:01:30,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-26 01:01:30,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:01:30,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-26 01:01:30,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:30,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:30,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357710374] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:30,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2043431599] [2022-11-26 01:01:30,917 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-26 01:01:30,917 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:30,917 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:30,918 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:30,918 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:31,098 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:31,462 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '948#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-26 01:01:31,462 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:31,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:31,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-26 01:01:31,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341287699] [2022-11-26 01:01:31,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:31,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-26 01:01:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:31,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-26 01:01:31,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-11-26 01:01:31,464 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:31,619 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-11-26 01:01:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 01:01:31,619 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-26 01:01:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:31,620 INFO L225 Difference]: With dead ends: 60 [2022-11-26 01:01:31,620 INFO L226 Difference]: Without dead ends: 51 [2022-11-26 01:01:31,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-11-26 01:01:31,621 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 47 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:31,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 44 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:01:31,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-26 01:01:31,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2022-11-26 01:01:31,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.125) internal successors, (45), 42 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:31,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2022-11-26 01:01:31,627 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 20 [2022-11-26 01:01:31,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:31,627 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2022-11-26 01:01:31,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:31,628 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2022-11-26 01:01:31,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-26 01:01:31,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:31,628 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2022-11-26 01:01:31,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 01:01:31,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-26 01:01:31,834 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:31,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:31,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1490246989, now seen corresponding path program 2 times [2022-11-26 01:01:31,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:31,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366370586] [2022-11-26 01:01:31,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:31,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:31,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:31,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366370586] [2022-11-26 01:01:31,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366370586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:31,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860696716] [2022-11-26 01:01:31,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:01:31,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:31,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:31,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:31,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 01:01:32,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-26 01:01:32,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:01:32,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 01:01:32,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:32,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:32,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860696716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:32,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1598940155] [2022-11-26 01:01:32,171 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:01:32,172 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:32,172 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:32,172 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:32,172 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:32,313 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:32,547 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1240#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:01:32,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:32,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:32,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-26 01:01:32,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525910241] [2022-11-26 01:01:32,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:32,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 01:01:32,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:32,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 01:01:32,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-26 01:01:32,549 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:32,607 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2022-11-26 01:01:32,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 01:01:32,608 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-26 01:01:32,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:32,610 INFO L225 Difference]: With dead ends: 73 [2022-11-26 01:01:32,610 INFO L226 Difference]: Without dead ends: 72 [2022-11-26 01:01:32,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-26 01:01:32,612 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:32,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 53 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:01:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-26 01:01:32,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2022-11-26 01:01:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 59 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2022-11-26 01:01:32,632 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 25 [2022-11-26 01:01:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:32,633 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2022-11-26 01:01:32,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2022-11-26 01:01:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-26 01:01:32,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:32,635 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1] [2022-11-26 01:01:32,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 01:01:32,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-26 01:01:32,840 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash 113568117, now seen corresponding path program 2 times [2022-11-26 01:01:32,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:32,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130802742] [2022-11-26 01:01:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:32,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:33,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:33,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130802742] [2022-11-26 01:01:33,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130802742] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:33,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172571538] [2022-11-26 01:01:33,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:01:33,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:33,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:33,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:33,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 01:01:33,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-26 01:01:33,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:01:33,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-26 01:01:33,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:33,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:33,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172571538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:33,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [617626889] [2022-11-26 01:01:33,507 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:01:33,507 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:33,507 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:33,508 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:33,508 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:33,623 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:34,045 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1646#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-26 01:01:34,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:34,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:34,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2022-11-26 01:01:34,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079444725] [2022-11-26 01:01:34,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:34,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-26 01:01:34,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:34,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-26 01:01:34,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=937, Unknown=0, NotChecked=0, Total=1190 [2022-11-26 01:01:34,048 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:34,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:34,428 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-26 01:01:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-26 01:01:34,429 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-26 01:01:34,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:34,430 INFO L225 Difference]: With dead ends: 108 [2022-11-26 01:01:34,430 INFO L226 Difference]: Without dead ends: 107 [2022-11-26 01:01:34,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 84 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=582, Invalid=1770, Unknown=0, NotChecked=0, Total=2352 [2022-11-26 01:01:34,431 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 108 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:34,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 54 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:01:34,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-26 01:01:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2022-11-26 01:01:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 81 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:34,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2022-11-26 01:01:34,443 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 37 [2022-11-26 01:01:34,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:34,444 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2022-11-26 01:01:34,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2022-11-26 01:01:34,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-26 01:01:34,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:34,448 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2022-11-26 01:01:34,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-26 01:01:34,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-26 01:01:34,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:34,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1126382697, now seen corresponding path program 3 times [2022-11-26 01:01:34,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:34,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371627176] [2022-11-26 01:01:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:34,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:34,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:34,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371627176] [2022-11-26 01:01:34,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371627176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:34,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133476075] [2022-11-26 01:01:34,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 01:01:34,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:34,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:34,912 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:34,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 01:01:34,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 01:01:34,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:01:34,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-26 01:01:34,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:35,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:35,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133476075] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:35,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [241844540] [2022-11-26 01:01:35,336 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-26 01:01:35,336 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:35,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:35,337 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:35,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:35,473 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:35,968 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2165#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-26 01:01:35,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:35,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:35,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-11-26 01:01:35,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696885284] [2022-11-26 01:01:35,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:35,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-26 01:01:35,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:35,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-26 01:01:35,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1046, Unknown=0, NotChecked=0, Total=1332 [2022-11-26 01:01:35,971 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:36,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:36,338 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2022-11-26 01:01:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-26 01:01:36,339 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-26 01:01:36,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:36,340 INFO L225 Difference]: With dead ends: 110 [2022-11-26 01:01:36,340 INFO L226 Difference]: Without dead ends: 93 [2022-11-26 01:01:36,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 91 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=637, Invalid=1913, Unknown=0, NotChecked=0, Total=2550 [2022-11-26 01:01:36,342 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 132 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:36,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 60 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:01:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-26 01:01:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2022-11-26 01:01:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 1.0875) internal successors, (87), 82 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-11-26 01:01:36,349 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 40 [2022-11-26 01:01:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:36,349 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-11-26 01:01:36,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-11-26 01:01:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-26 01:01:36,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:36,350 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2022-11-26 01:01:36,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-26 01:01:36,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-26 01:01:36,559 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:36,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash 172754355, now seen corresponding path program 3 times [2022-11-26 01:01:36,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:36,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857814688] [2022-11-26 01:01:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:36,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:36,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857814688] [2022-11-26 01:01:36,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857814688] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:36,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510202670] [2022-11-26 01:01:36,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 01:01:36,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:36,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:36,750 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:36,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-26 01:01:36,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 01:01:36,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:01:36,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-26 01:01:36,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:36,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:37,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510202670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:37,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [336990000] [2022-11-26 01:01:37,156 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:01:37,156 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:37,156 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:37,157 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:37,157 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:37,295 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:37,663 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2771#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:01:37,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:37,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:37,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-26 01:01:37,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448080473] [2022-11-26 01:01:37,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:37,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-26 01:01:37,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-26 01:01:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2022-11-26 01:01:37,666 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:37,763 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2022-11-26 01:01:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-26 01:01:37,764 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-26 01:01:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:37,765 INFO L225 Difference]: With dead ends: 149 [2022-11-26 01:01:37,765 INFO L226 Difference]: Without dead ends: 148 [2022-11-26 01:01:37,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 138 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2022-11-26 01:01:37,766 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 50 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:37,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 98 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:01:37,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-26 01:01:37,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 120. [2022-11-26 01:01:37,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 117 states have (on average 1.1452991452991452) internal successors, (134), 119 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2022-11-26 01:01:37,774 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 55 [2022-11-26 01:01:37,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:37,775 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2022-11-26 01:01:37,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.739130434782608) internal successors, (109), 24 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:37,775 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2022-11-26 01:01:37,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-26 01:01:37,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:37,777 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 1, 1, 1] [2022-11-26 01:01:37,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-26 01:01:37,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:37,983 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1901531787, now seen corresponding path program 3 times [2022-11-26 01:01:37,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:37,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880149652] [2022-11-26 01:01:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:37,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:38,779 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:38,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880149652] [2022-11-26 01:01:38,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880149652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:38,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753128087] [2022-11-26 01:01:38,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 01:01:38,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:38,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:38,784 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:38,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-26 01:01:38,855 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 01:01:38,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:01:38,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-26 01:01:38,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:38,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:40,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753128087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:40,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1962692335] [2022-11-26 01:01:40,048 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:01:40,049 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:40,049 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:40,049 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:40,049 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:40,189 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:40,951 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3609#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-26 01:01:40,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:40,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:40,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2022-11-26 01:01:40,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327827275] [2022-11-26 01:01:40,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:40,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-26 01:01:40,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-26 01:01:40,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=3417, Unknown=0, NotChecked=0, Total=4422 [2022-11-26 01:01:40,956 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand has 62 states, 61 states have (on average 2.5081967213114753) internal successors, (153), 62 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:41,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:41,985 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2022-11-26 01:01:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-26 01:01:41,986 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.5081967213114753) internal successors, (153), 62 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-26 01:01:41,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:41,987 INFO L225 Difference]: With dead ends: 216 [2022-11-26 01:01:41,987 INFO L226 Difference]: Without dead ends: 215 [2022-11-26 01:01:41,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 180 SyntacticMatches, 15 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3420 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2430, Invalid=6882, Unknown=0, NotChecked=0, Total=9312 [2022-11-26 01:01:41,990 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 237 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:41,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 96 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:01:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-26 01:01:41,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 162. [2022-11-26 01:01:41,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 159 states have (on average 1.1635220125786163) internal successors, (185), 161 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:41,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 185 transitions. [2022-11-26 01:01:42,000 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 185 transitions. Word has length 77 [2022-11-26 01:01:42,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:42,000 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 185 transitions. [2022-11-26 01:01:42,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.5081967213114753) internal successors, (153), 62 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 185 transitions. [2022-11-26 01:01:42,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-26 01:01:42,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:42,003 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2022-11-26 01:01:42,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-26 01:01:42,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-26 01:01:42,208 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2085240727, now seen corresponding path program 4 times [2022-11-26 01:01:42,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:42,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786853948] [2022-11-26 01:01:42,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:42,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:42,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:42,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786853948] [2022-11-26 01:01:42,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786853948] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:42,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512233806] [2022-11-26 01:01:42,957 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 01:01:42,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:42,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:42,958 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:42,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-26 01:01:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:43,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-26 01:01:43,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:43,165 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:43,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:44,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512233806] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:44,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1907453961] [2022-11-26 01:01:44,139 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-26 01:01:44,140 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:44,140 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:44,140 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:44,140 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:44,296 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:45,084 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4652#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-26 01:01:45,084 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:45,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:45,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2022-11-26 01:01:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708574118] [2022-11-26 01:01:45,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:45,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-26 01:01:45,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:45,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-26 01:01:45,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1070, Invalid=3622, Unknown=0, NotChecked=0, Total=4692 [2022-11-26 01:01:45,088 INFO L87 Difference]: Start difference. First operand 162 states and 185 transitions. Second operand has 64 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:46,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:46,088 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2022-11-26 01:01:46,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-26 01:01:46,089 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-26 01:01:46,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:46,090 INFO L225 Difference]: With dead ends: 210 [2022-11-26 01:01:46,090 INFO L226 Difference]: Without dead ends: 177 [2022-11-26 01:01:46,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 187 SyntacticMatches, 16 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3658 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2541, Invalid=7161, Unknown=0, NotChecked=0, Total=9702 [2022-11-26 01:01:46,093 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 282 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:46,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 110 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:01:46,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-26 01:01:46,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 163. [2022-11-26 01:01:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 160 states have (on average 1.06875) internal successors, (171), 162 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:46,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 171 transitions. [2022-11-26 01:01:46,102 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 171 transitions. Word has length 80 [2022-11-26 01:01:46,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:46,102 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 171 transitions. [2022-11-26 01:01:46,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:46,103 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 171 transitions. [2022-11-26 01:01:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-26 01:01:46,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:46,105 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1] [2022-11-26 01:01:46,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-26 01:01:46,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-26 01:01:46,310 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:46,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1112345523, now seen corresponding path program 4 times [2022-11-26 01:01:46,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:46,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669632093] [2022-11-26 01:01:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:46,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:46,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:46,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669632093] [2022-11-26 01:01:46,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669632093] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:46,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35127738] [2022-11-26 01:01:46,924 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 01:01:46,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:46,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:46,925 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:46,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-26 01:01:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:47,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-26 01:01:47,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:47,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:48,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35127738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:48,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [733827132] [2022-11-26 01:01:48,092 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:01:48,093 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:48,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:48,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:48,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:48,197 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:48,979 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5886#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:01:48,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:48,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:48,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-26 01:01:48,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336587914] [2022-11-26 01:01:48,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:48,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-26 01:01:48,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:48,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-26 01:01:48,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2022-11-26 01:01:48,982 INFO L87 Difference]: Start difference. First operand 163 states and 171 transitions. Second operand has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:49,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:01:49,235 INFO L93 Difference]: Finished difference Result 301 states and 324 transitions. [2022-11-26 01:01:49,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-26 01:01:49,235 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-11-26 01:01:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:01:49,237 INFO L225 Difference]: With dead ends: 301 [2022-11-26 01:01:49,237 INFO L226 Difference]: Without dead ends: 300 [2022-11-26 01:01:49,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2022-11-26 01:01:49,239 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 154 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:01:49,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 203 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:01:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-11-26 01:01:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 240. [2022-11-26 01:01:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 237 states have (on average 1.139240506329114) internal successors, (270), 239 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 270 transitions. [2022-11-26 01:01:49,249 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 270 transitions. Word has length 115 [2022-11-26 01:01:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:01:49,250 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 270 transitions. [2022-11-26 01:01:49,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.872340425531915) internal successors, (229), 48 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:01:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 270 transitions. [2022-11-26 01:01:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-26 01:01:49,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:01:49,255 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 1, 1, 1] [2022-11-26 01:01:49,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-26 01:01:49,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-26 01:01:49,460 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:01:49,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:01:49,460 INFO L85 PathProgramCache]: Analyzing trace with hash -394988171, now seen corresponding path program 4 times [2022-11-26 01:01:49,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:01:49,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271012550] [2022-11-26 01:01:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:01:49,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:01:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:52,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:01:52,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271012550] [2022-11-26 01:01:52,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271012550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:01:52,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793269518] [2022-11-26 01:01:52,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 01:01:52,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:01:52,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:01:52,006 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:01:52,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-26 01:01:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:01:52,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-26 01:01:52,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:01:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:52,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:01:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2325 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:01:55,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793269518] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:01:55,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [368989104] [2022-11-26 01:01:55,820 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:01:55,820 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:01:55,820 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:01:55,820 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:01:55,820 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:01:55,947 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:01:58,007 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7588#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-26 01:01:58,007 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:01:58,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:01:58,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 125 [2022-11-26 01:01:58,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091533737] [2022-11-26 01:01:58,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:01:58,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-11-26 01:01:58,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:01:58,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-11-26 01:01:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4045, Invalid=12985, Unknown=0, NotChecked=0, Total=17030 [2022-11-26 01:01:58,016 INFO L87 Difference]: Start difference. First operand 240 states and 270 transitions. Second operand has 126 states, 125 states have (on average 2.504) internal successors, (313), 126 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:01,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:01,276 INFO L93 Difference]: Finished difference Result 432 states and 463 transitions. [2022-11-26 01:02:01,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-11-26 01:02:01,277 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 2.504) internal successors, (313), 126 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2022-11-26 01:02:01,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:01,279 INFO L225 Difference]: With dead ends: 432 [2022-11-26 01:02:01,279 INFO L226 Difference]: Without dead ends: 431 [2022-11-26 01:02:01,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 372 SyntacticMatches, 31 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14028 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=9966, Invalid=27090, Unknown=0, NotChecked=0, Total=37056 [2022-11-26 01:02:01,283 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 870 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:01,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 175 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 01:02:01,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-11-26 01:02:01,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 322. [2022-11-26 01:02:01,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 319 states have (on average 1.1567398119122256) internal successors, (369), 321 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 369 transitions. [2022-11-26 01:02:01,296 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 369 transitions. Word has length 157 [2022-11-26 01:02:01,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:01,297 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 369 transitions. [2022-11-26 01:02:01,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 2.504) internal successors, (313), 126 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:01,297 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 369 transitions. [2022-11-26 01:02:01,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-26 01:02:01,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:01,299 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2022-11-26 01:02:01,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-26 01:02:01,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-26 01:02:01,505 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:02:01,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:01,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1117861783, now seen corresponding path program 5 times [2022-11-26 01:02:01,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:01,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263491642] [2022-11-26 01:02:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:01,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:03,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:03,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263491642] [2022-11-26 01:02:03,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263491642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:02:03,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667729601] [2022-11-26 01:02:03,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:02:03,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:03,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:02:03,827 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:02:03,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-26 01:02:04,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-11-26 01:02:04,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:02:04,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-26 01:02:04,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:02:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:04,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:02:07,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:07,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667729601] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:02:07,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1843126228] [2022-11-26 01:02:07,771 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-26 01:02:07,771 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:02:07,772 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:02:07,772 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:02:07,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:02:07,905 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:02:09,936 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9679#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-26 01:02:09,936 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:02:09,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:02:09,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2022-11-26 01:02:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15589270] [2022-11-26 01:02:09,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:02:09,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-11-26 01:02:09,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:09,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-11-26 01:02:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4174, Invalid=13382, Unknown=0, NotChecked=0, Total=17556 [2022-11-26 01:02:09,942 INFO L87 Difference]: Start difference. First operand 322 states and 369 transitions. Second operand has 128 states, 127 states have (on average 2.5118110236220472) internal successors, (319), 128 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:13,311 INFO L93 Difference]: Finished difference Result 410 states and 441 transitions. [2022-11-26 01:02:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-11-26 01:02:13,312 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 2.5118110236220472) internal successors, (319), 128 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-11-26 01:02:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:13,315 INFO L225 Difference]: With dead ends: 410 [2022-11-26 01:02:13,315 INFO L226 Difference]: Without dead ends: 345 [2022-11-26 01:02:13,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 379 SyntacticMatches, 32 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14506 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=10189, Invalid=27641, Unknown=0, NotChecked=0, Total=37830 [2022-11-26 01:02:13,321 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 657 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:13,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 188 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 01:02:13,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-26 01:02:13,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 323. [2022-11-26 01:02:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 320 states have (on average 1.059375) internal successors, (339), 322 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:13,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 339 transitions. [2022-11-26 01:02:13,339 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 339 transitions. Word has length 160 [2022-11-26 01:02:13,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:13,339 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 339 transitions. [2022-11-26 01:02:13,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 2.5118110236220472) internal successors, (319), 128 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:13,340 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 339 transitions. [2022-11-26 01:02:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-26 01:02:13,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:13,343 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1] [2022-11-26 01:02:13,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-26 01:02:13,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:13,549 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:02:13,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:13,549 INFO L85 PathProgramCache]: Analyzing trace with hash -627566669, now seen corresponding path program 5 times [2022-11-26 01:02:13,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:13,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359737154] [2022-11-26 01:02:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:13,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:15,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:15,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359737154] [2022-11-26 01:02:15,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359737154] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:02:15,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104046833] [2022-11-26 01:02:15,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:02:15,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:15,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:02:15,587 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:02:15,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-26 01:02:15,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-26 01:02:15,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:02:15,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-26 01:02:15,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:02:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:16,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:02:19,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:19,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104046833] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:02:19,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2068977405] [2022-11-26 01:02:19,157 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:02:19,157 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:02:19,157 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:02:19,157 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:02:19,158 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:02:19,261 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:02:21,303 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12169#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:02:21,303 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:02:21,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:02:21,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-26 01:02:21,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359051912] [2022-11-26 01:02:21,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:02:21,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-26 01:02:21,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:21,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-26 01:02:21,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4573, Invalid=5527, Unknown=0, NotChecked=0, Total=10100 [2022-11-26 01:02:21,307 INFO L87 Difference]: Start difference. First operand 323 states and 339 transitions. Second operand has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:02:21,737 INFO L93 Difference]: Finished difference Result 605 states and 652 transitions. [2022-11-26 01:02:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-26 01:02:21,738 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2022-11-26 01:02:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:02:21,741 INFO L225 Difference]: With dead ends: 605 [2022-11-26 01:02:21,741 INFO L226 Difference]: Without dead ends: 604 [2022-11-26 01:02:21,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 606 SyntacticMatches, 46 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7136 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4573, Invalid=5527, Unknown=0, NotChecked=0, Total=10100 [2022-11-26 01:02:21,743 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 338 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:02:21,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 389 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:02:21,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-26 01:02:21,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 480. [2022-11-26 01:02:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 477 states have (on average 1.1362683438155137) internal successors, (542), 479 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 542 transitions. [2022-11-26 01:02:21,761 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 542 transitions. Word has length 235 [2022-11-26 01:02:21,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:02:21,762 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 542 transitions. [2022-11-26 01:02:21,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.936842105263158) internal successors, (469), 96 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:02:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 542 transitions. [2022-11-26 01:02:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-26 01:02:21,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:02:21,768 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 62, 1, 1, 1] [2022-11-26 01:02:21,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-26 01:02:21,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:21,974 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:02:21,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:02:21,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1273166475, now seen corresponding path program 5 times [2022-11-26 01:02:21,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:02:21,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988714432] [2022-11-26 01:02:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:02:21,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:02:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:02:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 9765 backedges. 0 proven. 9765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:30,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:02:30,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988714432] [2022-11-26 01:02:30,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988714432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:02:30,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708051205] [2022-11-26 01:02:30,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:02:30,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:02:30,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:02:30,627 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:02:30,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-26 01:02:31,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2022-11-26 01:02:31,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:02:31,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 127 conjunts are in the unsatisfiable core [2022-11-26 01:02:31,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:02:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 9765 backedges. 0 proven. 9765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:31,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:02:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9765 backedges. 0 proven. 9765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:02:44,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708051205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:02:44,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [525226332] [2022-11-26 01:02:44,745 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:02:44,745 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:02:44,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:02:44,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:02:44,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:02:44,862 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:02:51,632 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15599#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-26 01:02:51,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:02:51,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:02:51,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127, 127] total 253 [2022-11-26 01:02:51,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103785253] [2022-11-26 01:02:51,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:02:51,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 254 states [2022-11-26 01:02:51,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:02:51,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 254 interpolants. [2022-11-26 01:02:51,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16269, Invalid=50553, Unknown=0, NotChecked=0, Total=66822 [2022-11-26 01:02:51,644 INFO L87 Difference]: Start difference. First operand 480 states and 542 transitions. Second operand has 254 states, 253 states have (on average 2.5019762845849804) internal successors, (633), 254 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:04,735 INFO L93 Difference]: Finished difference Result 864 states and 927 transitions. [2022-11-26 01:03:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2022-11-26 01:03:04,736 INFO L78 Accepts]: Start accepts. Automaton has has 254 states, 253 states have (on average 2.5019762845849804) internal successors, (633), 254 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 317 [2022-11-26 01:03:04,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:04,739 INFO L225 Difference]: With dead ends: 864 [2022-11-26 01:03:04,739 INFO L226 Difference]: Without dead ends: 863 [2022-11-26 01:03:04,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1202 GetRequests, 756 SyntacticMatches, 63 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56748 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=40398, Invalid=107442, Unknown=0, NotChecked=0, Total=147840 [2022-11-26 01:03:04,749 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1997 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:04,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1997 Valid, 338 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 01:03:04,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-11-26 01:03:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 642. [2022-11-26 01:03:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 639 states have (on average 1.1533646322378717) internal successors, (737), 641 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 737 transitions. [2022-11-26 01:03:04,773 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 737 transitions. Word has length 317 [2022-11-26 01:03:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:04,774 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 737 transitions. [2022-11-26 01:03:04,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 254 states, 253 states have (on average 2.5019762845849804) internal successors, (633), 254 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 737 transitions. [2022-11-26 01:03:04,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-11-26 01:03:04,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:04,779 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1, 1] [2022-11-26 01:03:04,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:04,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:03:04,985 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:03:04,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:04,986 INFO L85 PathProgramCache]: Analyzing trace with hash -46192745, now seen corresponding path program 6 times [2022-11-26 01:03:04,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:03:04,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926125873] [2022-11-26 01:03:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:04,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:03:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:13,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:03:13,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926125873] [2022-11-26 01:03:13,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926125873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:03:13,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018693479] [2022-11-26 01:03:13,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 01:03:13,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:03:13,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:03:13,664 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:03:13,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-26 01:03:13,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 01:03:13,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:03:13,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 128 conjunts are in the unsatisfiable core [2022-11-26 01:03:13,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:14,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:03:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:27,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018693479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:03:27,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [713147127] [2022-11-26 01:03:27,667 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-26 01:03:27,668 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:03:27,668 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:03:27,668 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:03:27,668 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:03:27,801 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:03:34,103 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19786#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-26 01:03:34,104 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:03:34,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:03:34,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 255 [2022-11-26 01:03:34,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349230652] [2022-11-26 01:03:34,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:03:34,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2022-11-26 01:03:34,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:03:34,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2022-11-26 01:03:34,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16526, Invalid=51334, Unknown=0, NotChecked=0, Total=67860 [2022-11-26 01:03:34,115 INFO L87 Difference]: Start difference. First operand 642 states and 737 transitions. Second operand has 256 states, 255 states have (on average 2.5058823529411764) internal successors, (639), 256 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:47,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:03:47,362 INFO L93 Difference]: Finished difference Result 810 states and 873 transitions. [2022-11-26 01:03:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2022-11-26 01:03:47,363 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 255 states have (on average 2.5058823529411764) internal successors, (639), 256 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-11-26 01:03:47,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:03:47,365 INFO L225 Difference]: With dead ends: 810 [2022-11-26 01:03:47,365 INFO L226 Difference]: Without dead ends: 681 [2022-11-26 01:03:47,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 763 SyntacticMatches, 64 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57706 ImplicationChecksByTransitivity, 33.6s TimeCoverageRelationStatistics Valid=40845, Invalid=108537, Unknown=0, NotChecked=0, Total=149382 [2022-11-26 01:03:47,377 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1437 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 01:03:47,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 339 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 01:03:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-26 01:03:47,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 643. [2022-11-26 01:03:47,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 640 states have (on average 1.0546875) internal successors, (675), 642 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 675 transitions. [2022-11-26 01:03:47,405 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 675 transitions. Word has length 320 [2022-11-26 01:03:47,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:03:47,406 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 675 transitions. [2022-11-26 01:03:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 256 states, 255 states have (on average 2.5058823529411764) internal successors, (639), 256 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:03:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 675 transitions. [2022-11-26 01:03:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-11-26 01:03:47,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:03:47,409 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 1, 1, 1] [2022-11-26 01:03:47,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-26 01:03:47,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-26 01:03:47,616 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:03:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:03:47,616 INFO L85 PathProgramCache]: Analyzing trace with hash 374484915, now seen corresponding path program 6 times [2022-11-26 01:03:47,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:03:47,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714997957] [2022-11-26 01:03:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:03:47,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:03:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:03:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:54,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:03:54,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714997957] [2022-11-26 01:03:54,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714997957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:03:54,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746745661] [2022-11-26 01:03:54,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 01:03:54,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:03:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:03:54,507 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:03:54,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-26 01:03:54,738 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 01:03:54,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:03:54,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-26 01:03:54,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:03:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:03:55,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:04:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:04:06,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746745661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:04:06,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [18279234] [2022-11-26 01:04:06,494 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:04:06,494 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:04:06,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:04:06,494 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:04:06,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:04:06,630 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:04:14,248 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24788#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:04:14,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:04:14,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:04:14,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-11-26 01:04:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801641114] [2022-11-26 01:04:14,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:04:14,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-26 01:04:14,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:04:14,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-26 01:04:14,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18349, Invalid=20263, Unknown=0, NotChecked=0, Total=38612 [2022-11-26 01:04:14,258 INFO L87 Difference]: Start difference. First operand 643 states and 675 transitions. Second operand has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:04:16,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:04:16,120 INFO L93 Difference]: Finished difference Result 1213 states and 1308 transitions. [2022-11-26 01:04:16,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-26 01:04:16,121 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 475 [2022-11-26 01:04:16,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:04:16,125 INFO L225 Difference]: With dead ends: 1213 [2022-11-26 01:04:16,125 INFO L226 Difference]: Without dead ends: 1212 [2022-11-26 01:04:16,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1519 GetRequests, 1230 SyntacticMatches, 94 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28112 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=18349, Invalid=20263, Unknown=0, NotChecked=0, Total=38612 [2022-11-26 01:04:16,129 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 842 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:04:16,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 779 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 01:04:16,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-11-26 01:04:16,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 960. [2022-11-26 01:04:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 957 states have (on average 1.134796238244514) internal successors, (1086), 959 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:04:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1086 transitions. [2022-11-26 01:04:16,162 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1086 transitions. Word has length 475 [2022-11-26 01:04:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:04:16,163 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1086 transitions. [2022-11-26 01:04:16,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.968586387434555) internal successors, (949), 192 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:04:16,164 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1086 transitions. [2022-11-26 01:04:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-11-26 01:04:16,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:04:16,169 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 126, 1, 1, 1] [2022-11-26 01:04:16,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-26 01:04:16,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:04:16,380 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:04:16,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:04:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash 732767605, now seen corresponding path program 6 times [2022-11-26 01:04:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:04:16,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664262430] [2022-11-26 01:04:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:04:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:04:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:04:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 40005 backedges. 0 proven. 40005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:04:51,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:04:51,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664262430] [2022-11-26 01:04:51,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664262430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:04:51,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427832201] [2022-11-26 01:04:51,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 01:04:51,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:04:51,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:04:51,343 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:04:51,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-26 01:04:51,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 01:04:51,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:04:51,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 1424 conjuncts, 255 conjunts are in the unsatisfiable core [2022-11-26 01:04:51,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:04:52,534 INFO L134 CoverageAnalysis]: Checked inductivity of 40005 backedges. 0 proven. 40005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:04:52,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:05:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 40005 backedges. 0 proven. 40005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:05:43,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427832201] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:05:43,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2055327415] [2022-11-26 01:05:43,952 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:05:43,952 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:05:43,952 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:05:43,952 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:05:43,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:05:44,051 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:06:08,676 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31674#(and (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0))' at error location [2022-11-26 01:06:08,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:06:08,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:06:08,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [255, 255, 255] total 509 [2022-11-26 01:06:08,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870895160] [2022-11-26 01:06:08,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:06:08,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 510 states [2022-11-26 01:06:08,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:06:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 510 interpolants. [2022-11-26 01:06:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65293, Invalid=199417, Unknown=0, NotChecked=0, Total=264710 [2022-11-26 01:06:08,710 INFO L87 Difference]: Start difference. First operand 960 states and 1086 transitions. Second operand has 510 states, 509 states have (on average 2.5009823182711197) internal successors, (1273), 510 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:17,532 INFO L93 Difference]: Finished difference Result 1728 states and 1855 transitions. [2022-11-26 01:07:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 510 states. [2022-11-26 01:07:17,533 INFO L78 Accepts]: Start accepts. Automaton has has 510 states, 509 states have (on average 2.5009823182711197) internal successors, (1273), 510 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 637 [2022-11-26 01:07:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:17,541 INFO L225 Difference]: With dead ends: 1728 [2022-11-26 01:07:17,541 INFO L226 Difference]: Without dead ends: 1727 [2022-11-26 01:07:17,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2418 GetRequests, 1524 SyntacticMatches, 127 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228204 ImplicationChecksByTransitivity, 130.6s TimeCoverageRelationStatistics Valid=162702, Invalid=427890, Unknown=0, NotChecked=0, Total=590592 [2022-11-26 01:07:17,572 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4700 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:17,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4700 Valid, 604 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 01:07:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2022-11-26 01:07:17,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1282. [2022-11-26 01:07:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1279 states have (on average 1.1516810007818608) internal successors, (1473), 1281 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1473 transitions. [2022-11-26 01:07:17,614 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1473 transitions. Word has length 637 [2022-11-26 01:07:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:17,615 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 1473 transitions. [2022-11-26 01:07:17,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 510 states, 509 states have (on average 2.5009823182711197) internal successors, (1273), 510 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1473 transitions. [2022-11-26 01:07:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-11-26 01:07:17,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:17,621 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 127, 1, 1, 1, 1, 1] [2022-11-26 01:07:17,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-26 01:07:17,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:07:17,829 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:07:17,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:17,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1438972009, now seen corresponding path program 7 times [2022-11-26 01:07:17,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:17,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316256765] [2022-11-26 01:07:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:17,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:54,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:54,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316256765] [2022-11-26 01:07:54,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316256765] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:07:54,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967535940] [2022-11-26 01:07:54,840 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 01:07:54,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:07:54,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:54,841 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:07:54,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-26 01:07:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:55,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 256 conjunts are in the unsatisfiable core [2022-11-26 01:07:55,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:07:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:55,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:08:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:08:48,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967535940] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:08:48,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1551160652] [2022-11-26 01:08:48,060 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-26 01:08:48,060 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:08:48,061 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:08:48,061 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:08:48,061 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:08:48,186 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:09:09,886 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40053#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= 4 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.base| 0) (< 2147483647 (* |ULTIMATE.start_main_~y~0#1| 4)))' at error location [2022-11-26 01:09:09,886 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:09:09,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:09:09,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [256, 256, 256] total 511 [2022-11-26 01:09:09,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363587501] [2022-11-26 01:09:09,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:09:09,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2022-11-26 01:09:09,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:09:09,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2022-11-26 01:09:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65806, Invalid=200966, Unknown=0, NotChecked=0, Total=266772 [2022-11-26 01:09:09,912 INFO L87 Difference]: Start difference. First operand 1282 states and 1473 transitions. Second operand has 512 states, 511 states have (on average 2.50293542074364) internal successors, (1279), 512 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:10:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:10:22,145 INFO L93 Difference]: Finished difference Result 1610 states and 1737 transitions. [2022-11-26 01:10:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2022-11-26 01:10:22,147 INFO L78 Accepts]: Start accepts. Automaton has has 512 states, 511 states have (on average 2.50293542074364) internal successors, (1279), 512 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 640 [2022-11-26 01:10:22,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:10:22,151 INFO L225 Difference]: With dead ends: 1610 [2022-11-26 01:10:22,151 INFO L226 Difference]: Without dead ends: 1353 [2022-11-26 01:10:22,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2428 GetRequests, 1531 SyntacticMatches, 128 SemanticMatches, 769 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230122 ImplicationChecksByTransitivity, 129.4s TimeCoverageRelationStatistics Valid=163597, Invalid=430073, Unknown=0, NotChecked=0, Total=593670 [2022-11-26 01:10:22,178 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3736 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3736 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-26 01:10:22,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3736 Valid, 634 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-26 01:10:22,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-11-26 01:10:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1283. [2022-11-26 01:10:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1280 states have (on average 1.05234375) internal successors, (1347), 1282 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:10:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1347 transitions. [2022-11-26 01:10:22,218 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1347 transitions. Word has length 640 [2022-11-26 01:10:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:10:22,219 INFO L495 AbstractCegarLoop]: Abstraction has 1283 states and 1347 transitions. [2022-11-26 01:10:22,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 512 states, 511 states have (on average 2.50293542074364) internal successors, (1279), 512 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:10:22,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1347 transitions. [2022-11-26 01:10:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2022-11-26 01:10:22,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:10:22,229 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 1, 1, 1] [2022-11-26 01:10:22,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-26 01:10:22,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:10:22,436 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:10:22,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:10:22,437 INFO L85 PathProgramCache]: Analyzing trace with hash 173432755, now seen corresponding path program 7 times [2022-11-26 01:10:22,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:10:22,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573546100] [2022-11-26 01:10:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:10:22,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:10:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:53,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:10:53,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573546100] [2022-11-26 01:10:53,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573546100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:10:53,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403145851] [2022-11-26 01:10:53,610 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 01:10:53,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:10:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:10:53,611 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:10:53,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-26 01:10:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:10:54,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2122 conjuncts, 193 conjunts are in the unsatisfiable core [2022-11-26 01:10:54,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:10:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:10:55,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:11:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:11:39,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403145851] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:11:39,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1009736593] [2022-11-26 01:11:39,626 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 01:11:39,626 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:11:39,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:11:39,626 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:11:39,626 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:11:39,715 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:12:03,244 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '50079#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (< 2147483643 |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 01:12:03,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:12:03,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:12:03,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-11-26 01:12:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044326395] [2022-11-26 01:12:03,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:12:03,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-26 01:12:03,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:12:03,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-26 01:12:03,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73549, Invalid=77383, Unknown=0, NotChecked=0, Total=150932 [2022-11-26 01:12:03,273 INFO L87 Difference]: Start difference. First operand 1283 states and 1347 transitions. Second operand has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:12:14,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:12:14,374 INFO L93 Difference]: Finished difference Result 2429 states and 2620 transitions. [2022-11-26 01:12:14,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-26 01:12:14,375 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 955 [2022-11-26 01:12:14,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:12:14,382 INFO L225 Difference]: With dead ends: 2429 [2022-11-26 01:12:14,382 INFO L226 Difference]: Without dead ends: 2428 [2022-11-26 01:12:14,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3055 GetRequests, 2478 SyntacticMatches, 190 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111536 ImplicationChecksByTransitivity, 80.8s TimeCoverageRelationStatistics Valid=73549, Invalid=77383, Unknown=0, NotChecked=0, Total=150932 [2022-11-26 01:12:14,393 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2010 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:12:14,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2010 Valid, 1544 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-26 01:12:14,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2022-11-26 01:12:14,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1920. [2022-11-26 01:12:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1917 states have (on average 1.1340636411058946) internal successors, (2174), 1919 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:12:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2174 transitions. [2022-11-26 01:12:14,449 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2174 transitions. Word has length 955 [2022-11-26 01:12:14,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:12:14,450 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2174 transitions. [2022-11-26 01:12:14,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.984334203655353) internal successors, (1909), 384 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:12:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2174 transitions. [2022-11-26 01:12:14,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2022-11-26 01:12:14,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:12:14,465 INFO L195 NwaCegarLoop]: trace histogram [255, 255, 255, 255, 254, 1, 1, 1] [2022-11-26 01:12:14,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-26 01:12:14,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e2a5be-72ff-4997-8485-ba713d0b8173/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-26 01:12:14,674 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-26 01:12:14,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:12:14,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1681037963, now seen corresponding path program 7 times [2022-11-26 01:12:14,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:12:14,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068159514] [2022-11-26 01:12:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:12:14,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:12:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat