./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark41_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark41_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW --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 e8c2a2f5606e46c1a328e1728dc6cdf6823e5c50ed56fab8310a8cb7bd30fe62 --- 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-4e7fbc6 [2022-11-23 16:00:27,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:00:27,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:00:27,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:00:27,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:00:27,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:00:27,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:00:27,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:00:27,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:00:27,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:00:27,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:00:27,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:00:27,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:00:27,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:00:27,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:00:27,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:00:27,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:00:27,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:00:27,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:00:27,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:00:27,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:00:27,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:00:27,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:00:27,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:00:27,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:00:27,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:00:27,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:00:27,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:00:27,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:00:27,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:00:27,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:00:27,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:00:27,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:00:27,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:00:27,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:00:27,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:00:27,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:00:27,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:00:27,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:00:27,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:00:27,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:00:27,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 16:00:28,017 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:00:28,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:00:28,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:00:28,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:00:28,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:00:28,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:00:28,021 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:00:28,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:00:28,021 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:00:28,021 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:00:28,023 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:00:28,023 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:00:28,023 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:00:28,023 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:00:28,024 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:00:28,024 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:00:28,024 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:00:28,024 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:00:28,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:00:28,025 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:00:28,026 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 16:00:28,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:00:28,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:00:28,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:00:28,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:00:28,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:00:28,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:00:28,028 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 16:00:28,028 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:00:28,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:00:28,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:00:28,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:00:28,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:00:28,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:00:28,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:00:28,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:00:28,030 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:00:28,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:00:28,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:00:28,031 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:00:28,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:00:28,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:00:28,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:00:28,032 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_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8c2a2f5606e46c1a328e1728dc6cdf6823e5c50ed56fab8310a8cb7bd30fe62 [2022-11-23 16:00:28,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:00:28,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:00:28,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:00:28,395 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:00:28,395 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:00:28,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/loop-zilu/benchmark41_conjunctive.i [2022-11-23 16:00:31,485 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:00:31,715 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:00:31,715 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/sv-benchmarks/c/loop-zilu/benchmark41_conjunctive.i [2022-11-23 16:00:31,725 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/data/9f64654d3/adccfcec764b43f48cf774f2b24beb3e/FLAGdca884e84 [2022-11-23 16:00:31,741 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/data/9f64654d3/adccfcec764b43f48cf774f2b24beb3e [2022-11-23 16:00:31,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:00:31,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:00:31,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:00:31,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:00:31,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:00:31,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:00:31" (1/1) ... [2022-11-23 16:00:31,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5fa59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:31, skipping insertion in model container [2022-11-23 16:00:31,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:00:31" (1/1) ... [2022-11-23 16:00:31,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:00:31,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:00:32,000 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_465d1569-7df4-432b-96c6-62348a97f9dc/sv-benchmarks/c/loop-zilu/benchmark41_conjunctive.i[873,886] [2022-11-23 16:00:32,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:00:32,022 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:00:32,036 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_465d1569-7df4-432b-96c6-62348a97f9dc/sv-benchmarks/c/loop-zilu/benchmark41_conjunctive.i[873,886] [2022-11-23 16:00:32,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:00:32,055 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:00:32,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32 WrapperNode [2022-11-23 16:00:32,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:00:32,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:00:32,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:00:32,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:00:32,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (1/1) ... [2022-11-23 16:00:32,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (1/1) ... [2022-11-23 16:00:32,089 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-11-23 16:00:32,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:00:32,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:00:32,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:00:32,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:00:32,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (1/1) ... [2022-11-23 16:00:32,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (1/1) ... [2022-11-23 16:00:32,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (1/1) ... [2022-11-23 16:00:32,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (1/1) ... [2022-11-23 16:00:32,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (1/1) ... [2022-11-23 16:00:32,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (1/1) ... [2022-11-23 16:00:32,110 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (1/1) ... [2022-11-23 16:00:32,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (1/1) ... [2022-11-23 16:00:32,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:00:32,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:00:32,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:00:32,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:00:32,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (1/1) ... [2022-11-23 16:00:32,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:00:32,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:32,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:00:32,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:00:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:00:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:00:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:00:32,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:00:32,254 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:00:32,256 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:00:32,412 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:00:32,442 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:00:32,442 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:00:32,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:00:32 BoogieIcfgContainer [2022-11-23 16:00:32,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:00:32,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:00:32,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:00:32,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:00:32,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:00:31" (1/3) ... [2022-11-23 16:00:32,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641664ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:00:32, skipping insertion in model container [2022-11-23 16:00:32,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:00:32" (2/3) ... [2022-11-23 16:00:32,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641664ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:00:32, skipping insertion in model container [2022-11-23 16:00:32,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:00:32" (3/3) ... [2022-11-23 16:00:32,456 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark41_conjunctive.i [2022-11-23 16:00:32,478 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:00:32,478 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-23 16:00:32,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:00:32,538 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;@1b012cf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:00:32,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-23 16:00:32,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.8125) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 16:00:32,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:32,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 16:00:32,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:32,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:32,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2658639, now seen corresponding path program 1 times [2022-11-23 16:00:32,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:32,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605402842] [2022-11-23 16:00:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:32,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:32,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:32,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605402842] [2022-11-23 16:00:32,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605402842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:32,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:32,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:00:32,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801427377] [2022-11-23 16:00:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:32,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:32,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:32,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:32,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:32,941 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.8125) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:33,104 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-11-23 16:00:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:00:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 16:00:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:33,116 INFO L225 Difference]: With dead ends: 27 [2022-11-23 16:00:33,117 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 16:00:33,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:00:33,135 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:33,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 20 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 16:00:33,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-23 16:00:33,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-11-23 16:00:33,168 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 4 [2022-11-23 16:00:33,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:33,168 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-11-23 16:00:33,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,169 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-11-23 16:00:33,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 16:00:33,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:33,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 16:00:33,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:00:33,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:33,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:33,171 INFO L85 PathProgramCache]: Analyzing trace with hash 82417859, now seen corresponding path program 1 times [2022-11-23 16:00:33,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:33,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425808706] [2022-11-23 16:00:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:33,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:33,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:33,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425808706] [2022-11-23 16:00:33,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425808706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:33,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:33,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:00:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225176653] [2022-11-23 16:00:33,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:33,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:33,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:33,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:33,242 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:33,318 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2022-11-23 16:00:33,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:00:33,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 16:00:33,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:33,320 INFO L225 Difference]: With dead ends: 36 [2022-11-23 16:00:33,320 INFO L226 Difference]: Without dead ends: 35 [2022-11-23 16:00:33,321 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 [2022-11-23 16:00:33,322 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:33,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:33,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-23 16:00:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2022-11-23 16:00:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.588235294117647) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-11-23 16:00:33,334 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 5 [2022-11-23 16:00:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:33,335 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-11-23 16:00:33,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-11-23 16:00:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 16:00:33,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:33,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 16:00:33,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:00:33,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:33,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:33,343 INFO L85 PathProgramCache]: Analyzing trace with hash 82461648, now seen corresponding path program 1 times [2022-11-23 16:00:33,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:33,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807203472] [2022-11-23 16:00:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:33,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:33,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:33,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807203472] [2022-11-23 16:00:33,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807203472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:33,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:33,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:00:33,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437763173] [2022-11-23 16:00:33,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:33,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:33,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:33,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:33,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:33,415 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:33,466 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-11-23 16:00:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:00:33,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 16:00:33,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:33,468 INFO L225 Difference]: With dead ends: 35 [2022-11-23 16:00:33,468 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 16:00:33,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:00:33,470 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:33,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 33 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 16:00:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2022-11-23 16:00:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-23 16:00:33,476 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 5 [2022-11-23 16:00:33,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:33,477 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-23 16:00:33,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,477 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-23 16:00:33,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 16:00:33,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:33,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 16:00:33,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:00:33,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1740013615, now seen corresponding path program 1 times [2022-11-23 16:00:33,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:33,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110245566] [2022-11-23 16:00:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:33,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:33,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:33,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110245566] [2022-11-23 16:00:33,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110245566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:33,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:33,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:00:33,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346606943] [2022-11-23 16:00:33,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:33,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:33,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:33,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:33,534 INFO L87 Difference]: Start difference. First operand 28 states and 29 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) [2022-11-23 16:00:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:33,569 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-11-23 16:00:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:00:33,569 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 [2022-11-23 16:00:33,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:33,570 INFO L225 Difference]: With dead ends: 28 [2022-11-23 16:00:33,570 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 16:00:33,571 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 [2022-11-23 16:00:33,572 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:33,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 18 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 16:00:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-23 16:00:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-11-23 16:00:33,586 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 6 [2022-11-23 16:00:33,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:33,586 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-11-23 16:00:33,588 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) [2022-11-23 16:00:33,588 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-11-23 16:00:33,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 16:00:33,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:33,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 16:00:33,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:00:33,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:33,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:33,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1738656139, now seen corresponding path program 1 times [2022-11-23 16:00:33,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:33,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686506764] [2022-11-23 16:00:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:33,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:33,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:33,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686506764] [2022-11-23 16:00:33,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686506764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:33,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:33,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:00:33,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085421803] [2022-11-23 16:00:33,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:33,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:33,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:33,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:33,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:33,689 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:33,733 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-11-23 16:00:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:00:33,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 16:00:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:33,734 INFO L225 Difference]: With dead ends: 29 [2022-11-23 16:00:33,734 INFO L226 Difference]: Without dead ends: 28 [2022-11-23 16:00:33,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:00:33,736 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:33,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 19 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:33,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-23 16:00:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-23 16:00:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.45) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-23 16:00:33,742 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2022-11-23 16:00:33,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:33,743 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-23 16:00:33,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,743 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-23 16:00:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 16:00:33,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:33,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:33,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:00:33,744 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:33,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:33,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1894152837, now seen corresponding path program 1 times [2022-11-23 16:00:33,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:33,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873140501] [2022-11-23 16:00:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:33,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:33,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:33,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873140501] [2022-11-23 16:00:33,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873140501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:33,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:33,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:00:33,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216172567] [2022-11-23 16:00:33,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:33,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:33,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:33,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:33,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:33,816 INFO L87 Difference]: Start difference. First operand 28 states and 29 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) [2022-11-23 16:00:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:33,870 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2022-11-23 16:00:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:00:33,871 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 [2022-11-23 16:00:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:33,872 INFO L225 Difference]: With dead ends: 35 [2022-11-23 16:00:33,872 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 16:00:33,872 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 [2022-11-23 16:00:33,873 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:33,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 33 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:33,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 16:00:33,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2022-11-23 16:00:33,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-11-23 16:00:33,879 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 7 [2022-11-23 16:00:33,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:33,880 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-11-23 16:00:33,880 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) [2022-11-23 16:00:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-11-23 16:00:33,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 16:00:33,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:33,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:33,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:00:33,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1936234610, now seen corresponding path program 1 times [2022-11-23 16:00:33,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:33,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642165186] [2022-11-23 16:00:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:33,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:33,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:33,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642165186] [2022-11-23 16:00:33,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642165186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:33,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:33,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:00:33,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524101416] [2022-11-23 16:00:33,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:33,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:33,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:33,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:33,971 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:34,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:34,047 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-11-23 16:00:34,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:00:34,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 16:00:34,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:34,050 INFO L225 Difference]: With dead ends: 34 [2022-11-23 16:00:34,050 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 16:00:34,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:00:34,055 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 28 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 [2022-11-23 16:00:34,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 28 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:34,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 16:00:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2022-11-23 16:00:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.391304347826087) internal successors, (32), 30 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) [2022-11-23 16:00:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2022-11-23 16:00:34,069 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 7 [2022-11-23 16:00:34,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:34,069 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2022-11-23 16:00:34,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:34,071 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2022-11-23 16:00:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 16:00:34,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:34,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:34,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:00:34,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:34,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:34,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1410804141, now seen corresponding path program 1 times [2022-11-23 16:00:34,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:34,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407003639] [2022-11-23 16:00:34,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:34,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:34,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:34,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407003639] [2022-11-23 16:00:34,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407003639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:34,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:34,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:00:34,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381029858] [2022-11-23 16:00:34,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:34,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:00:34,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:34,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:00:34,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:00:34,145 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:34,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:34,185 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-11-23 16:00:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:00:34,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-23 16:00:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:34,187 INFO L225 Difference]: With dead ends: 36 [2022-11-23 16:00:34,187 INFO L226 Difference]: Without dead ends: 35 [2022-11-23 16:00:34,187 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 [2022-11-23 16:00:34,188 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:34,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 27 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:34,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-23 16:00:34,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-11-23 16:00:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.375) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-11-23 16:00:34,194 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 8 [2022-11-23 16:00:34,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:34,194 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-11-23 16:00:34,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:34,195 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-11-23 16:00:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 16:00:34,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:34,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:34,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 16:00:34,196 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:34,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:34,197 INFO L85 PathProgramCache]: Analyzing trace with hash -106269161, now seen corresponding path program 1 times [2022-11-23 16:00:34,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:34,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331488530] [2022-11-23 16:00:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:34,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:34,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:34,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331488530] [2022-11-23 16:00:34,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331488530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:34,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:34,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:00:34,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403336179] [2022-11-23 16:00:34,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:34,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:00:34,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:34,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:00:34,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:00:34,257 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:34,300 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-11-23 16:00:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:00:34,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-23 16:00:34,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:34,301 INFO L225 Difference]: With dead ends: 34 [2022-11-23 16:00:34,301 INFO L226 Difference]: Without dead ends: 28 [2022-11-23 16:00:34,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:00:34,303 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:34,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 15 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:34,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-23 16:00:34,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-23 16:00:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-11-23 16:00:34,307 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 8 [2022-11-23 16:00:34,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:34,308 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-11-23 16:00:34,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:34,308 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-11-23 16:00:34,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 16:00:34,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:34,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:34,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 16:00:34,309 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:34,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:34,310 INFO L85 PathProgramCache]: Analyzing trace with hash -785255353, now seen corresponding path program 1 times [2022-11-23 16:00:34,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:34,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695868897] [2022-11-23 16:00:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:34,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:34,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:34,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695868897] [2022-11-23 16:00:34,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695868897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:34,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:34,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 16:00:34,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628438435] [2022-11-23 16:00:34,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:34,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:00:34,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:00:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:00:34,340 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:34,354 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-11-23 16:00:34,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:00:34,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 16:00:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:34,355 INFO L225 Difference]: With dead ends: 28 [2022-11-23 16:00:34,355 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 16:00:34,355 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 [2022-11-23 16:00:34,356 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 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 [2022-11-23 16:00:34,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 16:00:34,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-23 16:00:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.35) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-23 16:00:34,361 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 9 [2022-11-23 16:00:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:34,361 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-23 16:00:34,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-23 16:00:34,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 16:00:34,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:34,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:34,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 16:00:34,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:34,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:34,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1144685833, now seen corresponding path program 1 times [2022-11-23 16:00:34,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:34,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576992098] [2022-11-23 16:00:34,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:34,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:34,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:34,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576992098] [2022-11-23 16:00:34,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576992098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:34,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485905991] [2022-11-23 16:00:34,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:34,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:34,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:34,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:34,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:00:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:34,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 16:00:34,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:34,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:34,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485905991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:34,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [321925056] [2022-11-23 16:00:34,720 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:00:34,720 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:34,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:34,730 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:34,733 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:35,385 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:36,339 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '801#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (not (<= |ULTIMATE.start_main_#t~post5#1| 2147483646)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:36,339 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:36,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:36,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-23 16:00:36,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041974429] [2022-11-23 16:00:36,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:36,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 16:00:36,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:36,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 16:00:36,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-23 16:00:36,342 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:36,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:36,526 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2022-11-23 16:00:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 16:00:36,527 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 16:00:36,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:36,528 INFO L225 Difference]: With dead ends: 77 [2022-11-23 16:00:36,530 INFO L226 Difference]: Without dead ends: 76 [2022-11-23 16:00:36,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-11-23 16:00:36,531 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:36,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 54 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-23 16:00:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 45. [2022-11-23 16:00:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.368421052631579) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2022-11-23 16:00:36,541 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 12 [2022-11-23 16:00:36,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:36,542 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2022-11-23 16:00:36,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2022-11-23 16:00:36,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 16:00:36,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:36,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:36,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:36,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 16:00:36,751 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:36,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1144729622, now seen corresponding path program 1 times [2022-11-23 16:00:36,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:36,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553378568] [2022-11-23 16:00:36,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:36,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:36,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:36,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:36,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553378568] [2022-11-23 16:00:36,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553378568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:36,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:36,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 16:00:36,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644493600] [2022-11-23 16:00:36,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:36,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 16:00:36,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:36,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 16:00:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 16:00:36,846 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:36,925 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2022-11-23 16:00:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 16:00:36,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-23 16:00:36,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:36,928 INFO L225 Difference]: With dead ends: 45 [2022-11-23 16:00:36,928 INFO L226 Difference]: Without dead ends: 44 [2022-11-23 16:00:36,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-23 16:00:36,929 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 44 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:36,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 26 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-23 16:00:36,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-23 16:00:36,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2022-11-23 16:00:36,947 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 12 [2022-11-23 16:00:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:36,948 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2022-11-23 16:00:36,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2022-11-23 16:00:36,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 16:00:36,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:36,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:36,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 16:00:36,950 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:36,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1126879983, now seen corresponding path program 1 times [2022-11-23 16:00:36,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:36,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757851550] [2022-11-23 16:00:36,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:36,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:37,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:37,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757851550] [2022-11-23 16:00:37,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757851550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:37,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563053712] [2022-11-23 16:00:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:37,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:37,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:37,067 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:37,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:00:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:37,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 16:00:37,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:37,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:37,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:37,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563053712] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:37,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1537557779] [2022-11-23 16:00:37,301 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 16:00:37,302 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:37,302 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:37,302 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:37,303 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:37,691 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:39,033 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1148#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:39,033 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:39,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:39,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-11-23 16:00:39,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646998646] [2022-11-23 16:00:39,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:39,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 16:00:39,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:39,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 16:00:39,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-11-23 16:00:39,035 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:39,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:39,186 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2022-11-23 16:00:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 16:00:39,187 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-23 16:00:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:39,187 INFO L225 Difference]: With dead ends: 57 [2022-11-23 16:00:39,187 INFO L226 Difference]: Without dead ends: 56 [2022-11-23 16:00:39,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-11-23 16:00:39,188 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:39,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 38 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:39,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-23 16:00:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2022-11-23 16:00:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 46 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2022-11-23 16:00:39,193 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 13 [2022-11-23 16:00:39,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:39,193 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2022-11-23 16:00:39,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:39,193 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2022-11-23 16:00:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 16:00:39,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:39,193 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:39,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:39,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:39,402 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:39,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:39,402 INFO L85 PathProgramCache]: Analyzing trace with hash 531459403, now seen corresponding path program 1 times [2022-11-23 16:00:39,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:39,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104866457] [2022-11-23 16:00:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:39,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:39,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:39,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104866457] [2022-11-23 16:00:39,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104866457] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:39,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090009798] [2022-11-23 16:00:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:39,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:39,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:39,451 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:39,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:00:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:39,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 16:00:39,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:39,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:39,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090009798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:39,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1001024773] [2022-11-23 16:00:39,573 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:00:39,573 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:39,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:39,574 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:39,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:39,857 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:40,758 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1367#(and (<= |ULTIMATE.start_main_~z~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 |#NULL.offset|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:40,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:40,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:40,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-23 16:00:40,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959442820] [2022-11-23 16:00:40,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:40,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 16:00:40,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:40,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 16:00:40,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-23 16:00:40,760 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:40,904 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2022-11-23 16:00:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 16:00:40,905 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 16:00:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:40,905 INFO L225 Difference]: With dead ends: 71 [2022-11-23 16:00:40,906 INFO L226 Difference]: Without dead ends: 70 [2022-11-23 16:00:40,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-11-23 16:00:40,907 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:40,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 51 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-23 16:00:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 49. [2022-11-23 16:00:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.255813953488372) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-11-23 16:00:40,911 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 14 [2022-11-23 16:00:40,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:40,911 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-11-23 16:00:40,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:40,912 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-11-23 16:00:40,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 16:00:40,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:40,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:40,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:41,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 16:00:41,119 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:41,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash 573541176, now seen corresponding path program 1 times [2022-11-23 16:00:41,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:41,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016384238] [2022-11-23 16:00:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:41,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:41,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:41,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016384238] [2022-11-23 16:00:41,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016384238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:41,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525721126] [2022-11-23 16:00:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:41,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:41,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:41,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:41,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:00:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:41,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 16:00:41,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:41,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 16:00:41,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525721126] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:41,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 16:00:41,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 16 [2022-11-23 16:00:41,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147850393] [2022-11-23 16:00:41,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:41,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:00:41,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:41,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:00:41,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-11-23 16:00:41,484 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-11-23 16:00:41,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:41,560 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-11-23 16:00:41,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:00:41,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 16:00:41,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:41,561 INFO L225 Difference]: With dead ends: 49 [2022-11-23 16:00:41,561 INFO L226 Difference]: Without dead ends: 48 [2022-11-23 16:00:41,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-11-23 16:00:41,562 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:41,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 5 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:41,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-23 16:00:41,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-11-23 16:00:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-11-23 16:00:41,566 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 14 [2022-11-23 16:00:41,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:41,567 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-11-23 16:00:41,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-11-23 16:00:41,567 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-11-23 16:00:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 16:00:41,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:41,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 16:00:41,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:41,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 16:00:41,774 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:41,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:41,774 INFO L85 PathProgramCache]: Analyzing trace with hash -704627635, now seen corresponding path program 1 times [2022-11-23 16:00:41,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:41,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718482615] [2022-11-23 16:00:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:41,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:41,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:41,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718482615] [2022-11-23 16:00:41,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718482615] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:41,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814276426] [2022-11-23 16:00:41,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:41,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:41,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:41,805 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:41,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 16:00:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:41,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:00:41,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:41,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:41,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814276426] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:41,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [629141471] [2022-11-23 16:00:41,907 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:00:41,907 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:41,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:41,907 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:41,908 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:42,130 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:42,869 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1810#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~y~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:42,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:42,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:42,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-23 16:00:42,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792117067] [2022-11-23 16:00:42,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:42,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:00:42,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:42,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:00:42,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:00:42,871 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:42,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:42,911 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2022-11-23 16:00:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:00:42,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-23 16:00:42,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:42,912 INFO L225 Difference]: With dead ends: 66 [2022-11-23 16:00:42,913 INFO L226 Difference]: Without dead ends: 65 [2022-11-23 16:00:42,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-23 16:00:42,914 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:42,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 55 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:42,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-23 16:00:42,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2022-11-23 16:00:42,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:42,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2022-11-23 16:00:42,918 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 15 [2022-11-23 16:00:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:42,918 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2022-11-23 16:00:42,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2022-11-23 16:00:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 16:00:42,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:42,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:42,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:43,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:43,127 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:43,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:43,128 INFO L85 PathProgramCache]: Analyzing trace with hash 599907345, now seen corresponding path program 1 times [2022-11-23 16:00:43,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:43,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516309148] [2022-11-23 16:00:43,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:43,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 16:00:43,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:43,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516309148] [2022-11-23 16:00:43,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516309148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:00:43,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:00:43,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:00:43,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386033831] [2022-11-23 16:00:43,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:00:43,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:00:43,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:43,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:00:43,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 16:00:43,197 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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) [2022-11-23 16:00:43,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:43,252 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2022-11-23 16:00:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:00:43,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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) Word has length 15 [2022-11-23 16:00:43,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:43,253 INFO L225 Difference]: With dead ends: 49 [2022-11-23 16:00:43,253 INFO L226 Difference]: Without dead ends: 43 [2022-11-23 16:00:43,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:00:43,254 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 18 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:43,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-23 16:00:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-23 16:00:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2022-11-23 16:00:43,260 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 15 [2022-11-23 16:00:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:43,261 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2022-11-23 16:00:43,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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) [2022-11-23 16:00:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2022-11-23 16:00:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 16:00:43,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:43,262 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:43,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 16:00:43,262 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:43,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash 815945775, now seen corresponding path program 2 times [2022-11-23 16:00:43,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:43,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983041596] [2022-11-23 16:00:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:43,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:43,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:43,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983041596] [2022-11-23 16:00:43,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983041596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:43,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891978529] [2022-11-23 16:00:43,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:00:43,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:43,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:43,399 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:43,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 16:00:43,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 16:00:43,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:00:43,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 16:00:43,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:43,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:43,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891978529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:43,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [463817738] [2022-11-23 16:00:43,821 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 16:00:43,821 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:43,822 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:43,822 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:43,822 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:44,127 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:45,601 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2241#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:45,601 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:45,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:45,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2022-11-23 16:00:45,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15955426] [2022-11-23 16:00:45,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:45,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-23 16:00:45,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:45,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-23 16:00:45,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 16:00:45,604 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 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) [2022-11-23 16:00:46,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:46,042 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2022-11-23 16:00:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 16:00:46,044 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 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 27 [2022-11-23 16:00:46,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:46,044 INFO L225 Difference]: With dead ends: 81 [2022-11-23 16:00:46,044 INFO L226 Difference]: Without dead ends: 68 [2022-11-23 16:00:46,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 44 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=397, Invalid=2465, Unknown=0, NotChecked=0, Total=2862 [2022-11-23 16:00:46,046 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 101 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:46,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 90 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:00:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-23 16:00:46,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2022-11-23 16:00:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 58 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2022-11-23 16:00:46,065 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 27 [2022-11-23 16:00:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:46,065 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2022-11-23 16:00:46,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 31 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) [2022-11-23 16:00:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2022-11-23 16:00:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 16:00:46,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:46,066 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1] [2022-11-23 16:00:46,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:46,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 16:00:46,276 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1234635965, now seen corresponding path program 2 times [2022-11-23 16:00:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:46,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195229465] [2022-11-23 16:00:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:46,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:46,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195229465] [2022-11-23 16:00:46,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195229465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:46,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675057230] [2022-11-23 16:00:46,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:00:46,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:46,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:46,407 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:46,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 16:00:46,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 16:00:46,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:00:46,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 16:00:46,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:46,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:46,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675057230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:46,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1230966880] [2022-11-23 16:00:46,693 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:00:46,693 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:46,694 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:46,694 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:46,694 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:46,900 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:47,388 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2648#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 0) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:47,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:47,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:47,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-11-23 16:00:47,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776853363] [2022-11-23 16:00:47,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:47,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 16:00:47,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:47,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 16:00:47,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2022-11-23 16:00:47,391 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:47,588 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2022-11-23 16:00:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 16:00:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 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 33 [2022-11-23 16:00:47,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:47,589 INFO L225 Difference]: With dead ends: 105 [2022-11-23 16:00:47,589 INFO L226 Difference]: Without dead ends: 104 [2022-11-23 16:00:47,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 72 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=1155, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 16:00:47,591 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 76 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:47,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 92 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:47,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-23 16:00:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2022-11-23 16:00:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 81 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2022-11-23 16:00:47,597 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 33 [2022-11-23 16:00:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:47,597 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2022-11-23 16:00:47,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2022-11-23 16:00:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-23 16:00:47,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:47,599 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1, 1] [2022-11-23 16:00:47,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:47,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:47,805 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:47,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1074187003, now seen corresponding path program 2 times [2022-11-23 16:00:47,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:47,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908815203] [2022-11-23 16:00:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:47,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:47,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:47,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908815203] [2022-11-23 16:00:47,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908815203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:47,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92079592] [2022-11-23 16:00:47,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:00:47,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:47,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:47,943 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:47,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 16:00:48,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 16:00:48,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:00:48,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 16:00:48,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:48,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:48,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92079592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:48,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [179375078] [2022-11-23 16:00:48,242 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:00:48,242 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:48,243 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:48,243 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:48,243 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:48,500 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:49,563 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3110#(and (<= |ULTIMATE.start_main_~z~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 |#NULL.offset|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:49,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:49,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:49,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-11-23 16:00:49,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548306404] [2022-11-23 16:00:49,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:49,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 16:00:49,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:49,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 16:00:49,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2022-11-23 16:00:49,566 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:49,813 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2022-11-23 16:00:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 16:00:49,813 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-23 16:00:49,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:49,814 INFO L225 Difference]: With dead ends: 102 [2022-11-23 16:00:49,814 INFO L226 Difference]: Without dead ends: 101 [2022-11-23 16:00:49,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 77 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=322, Invalid=1160, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 16:00:49,815 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 78 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:49,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 92 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:00:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-23 16:00:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2022-11-23 16:00:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.15) internal successors, (92), 83 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2022-11-23 16:00:49,821 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 35 [2022-11-23 16:00:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:49,821 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2022-11-23 16:00:49,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:49,821 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2022-11-23 16:00:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 16:00:49,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:49,822 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2022-11-23 16:00:49,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:50,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:50,023 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1059941331, now seen corresponding path program 2 times [2022-11-23 16:00:50,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:50,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005297244] [2022-11-23 16:00:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:50,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:50,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005297244] [2022-11-23 16:00:50,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005297244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:50,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832611011] [2022-11-23 16:00:50,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:00:50,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:50,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:50,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:50,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 16:00:50,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-23 16:00:50,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:00:50,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 16:00:50,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:50,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:50,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832611011] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:50,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [137661021] [2022-11-23 16:00:50,306 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:00:50,306 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:50,306 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:50,307 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:50,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:50,511 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:51,359 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3567#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~y~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:51,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:51,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:51,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-23 16:00:51,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311609057] [2022-11-23 16:00:51,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:51,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 16:00:51,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:51,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 16:00:51,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-11-23 16:00:51,361 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:51,410 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2022-11-23 16:00:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 16:00:51,410 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 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 36 [2022-11-23 16:00:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:51,411 INFO L225 Difference]: With dead ends: 98 [2022-11-23 16:00:51,411 INFO L226 Difference]: Without dead ends: 97 [2022-11-23 16:00:51,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 85 SyntacticMatches, 10 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-11-23 16:00:51,412 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:51,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:00:51,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-23 16:00:51,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2022-11-23 16:00:51,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 84 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2022-11-23 16:00:51,417 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 36 [2022-11-23 16:00:51,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:51,418 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2022-11-23 16:00:51,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2022-11-23 16:00:51,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 16:00:51,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:51,419 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2022-11-23 16:00:51,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-23 16:00:51,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:51,632 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1316040017, now seen corresponding path program 3 times [2022-11-23 16:00:51,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:51,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816019715] [2022-11-23 16:00:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:51,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:51,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:51,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816019715] [2022-11-23 16:00:51,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816019715] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:51,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981869233] [2022-11-23 16:00:51,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:00:51,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:51,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:51,926 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:51,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 16:00:51,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:00:51,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:00:51,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 16:00:51,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:52,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:53,029 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:53,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981869233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:53,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2132608888] [2022-11-23 16:00:53,035 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 16:00:53,035 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:53,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:53,037 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:53,037 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:53,261 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:55,365 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4166#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:55,366 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:55,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:55,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 23] total 62 [2022-11-23 16:00:55,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661231129] [2022-11-23 16:00:55,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:55,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-23 16:00:55,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:55,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-23 16:00:55,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=618, Invalid=4494, Unknown=0, NotChecked=0, Total=5112 [2022-11-23 16:00:55,369 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 63 states, 62 states have (on average 2.629032258064516) internal successors, (163), 63 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:56,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:00:56,396 INFO L93 Difference]: Finished difference Result 155 states and 162 transitions. [2022-11-23 16:00:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-23 16:00:56,399 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.629032258064516) internal successors, (163), 63 states have internal predecessors, (163), 0 states have call successors, (0), 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 [2022-11-23 16:00:56,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:00:56,399 INFO L225 Difference]: With dead ends: 155 [2022-11-23 16:00:56,400 INFO L226 Difference]: Without dead ends: 130 [2022-11-23 16:00:56,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 96 SyntacticMatches, 15 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6019 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1503, Invalid=9209, Unknown=0, NotChecked=0, Total=10712 [2022-11-23 16:00:56,403 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 244 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:00:56,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 122 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:00:56,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-23 16:00:56,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 115. [2022-11-23 16:00:56,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 1.1441441441441442) internal successors, (127), 114 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2022-11-23 16:00:56,411 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 55 [2022-11-23 16:00:56,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:00:56,411 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2022-11-23 16:00:56,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.629032258064516) internal successors, (163), 63 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:00:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2022-11-23 16:00:56,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 16:00:56,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:00:56,414 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1] [2022-11-23 16:00:56,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 16:00:56,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-23 16:00:56,620 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:00:56,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:00:56,620 INFO L85 PathProgramCache]: Analyzing trace with hash -460352765, now seen corresponding path program 3 times [2022-11-23 16:00:56,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:00:56,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403583630] [2022-11-23 16:00:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:00:56,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:00:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:00:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:57,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:00:57,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403583630] [2022-11-23 16:00:57,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403583630] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:00:57,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395473181] [2022-11-23 16:00:57,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:00:57,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:00:57,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:00:57,148 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:00:57,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 16:00:57,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:00:57,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:00:57,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 16:00:57,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:00:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:57,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:00:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:00:57,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395473181] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:00:57,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [324516433] [2022-11-23 16:00:57,948 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:00:57,949 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:00:57,949 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:00:57,949 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:00:57,949 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:58,154 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:59,980 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5031#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (not (<= |ULTIMATE.start_main_#t~post5#1| 2147483646)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:00:59,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:00:59,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:00:59,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2022-11-23 16:00:59,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642991240] [2022-11-23 16:00:59,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:00:59,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-23 16:00:59,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:00:59,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-23 16:00:59,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=2186, Unknown=0, NotChecked=0, Total=2756 [2022-11-23 16:00:59,983 INFO L87 Difference]: Start difference. First operand 115 states and 127 transitions. Second operand has 46 states, 45 states have (on average 3.311111111111111) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:00,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:00,664 INFO L93 Difference]: Finished difference Result 217 states and 228 transitions. [2022-11-23 16:01:00,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-23 16:01:00,664 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.311111111111111) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 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 75 [2022-11-23 16:01:00,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:00,666 INFO L225 Difference]: With dead ends: 217 [2022-11-23 16:01:00,666 INFO L226 Difference]: Without dead ends: 216 [2022-11-23 16:01:00,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 174 SyntacticMatches, 21 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2666 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1351, Invalid=4199, Unknown=0, NotChecked=0, Total=5550 [2022-11-23 16:01:00,668 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 264 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:00,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 172 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 16:01:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-23 16:01:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 166. [2022-11-23 16:01:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.2037037037037037) internal successors, (195), 165 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 195 transitions. [2022-11-23 16:01:00,678 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 195 transitions. Word has length 75 [2022-11-23 16:01:00,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:00,678 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 195 transitions. [2022-11-23 16:01:00,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.311111111111111) internal successors, (149), 46 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:00,679 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 195 transitions. [2022-11-23 16:01:00,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 16:01:00,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:00,680 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 1, 1, 1] [2022-11-23 16:01:00,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:00,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-23 16:01:00,886 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:01:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:00,886 INFO L85 PathProgramCache]: Analyzing trace with hash -17374011, now seen corresponding path program 3 times [2022-11-23 16:01:00,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:00,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861574203] [2022-11-23 16:01:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:00,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:01,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:01,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861574203] [2022-11-23 16:01:01,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861574203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:01,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250495498] [2022-11-23 16:01:01,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:01:01,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:01,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:01,295 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:01,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 16:01:01,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:01:01,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:01:01,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 16:01:01,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:01,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:02,077 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:02,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250495498] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:02,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1492389606] [2022-11-23 16:01:02,079 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:01:02,079 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:02,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:02,080 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:02,080 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:02,302 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:04,253 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6013#(and (<= |ULTIMATE.start_main_~z~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 |#NULL.offset|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:01:04,253 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:01:04,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:04,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2022-11-23 16:01:04,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201347564] [2022-11-23 16:01:04,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:01:04,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-23 16:01:04,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:04,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-23 16:01:04,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=567, Invalid=2189, Unknown=0, NotChecked=0, Total=2756 [2022-11-23 16:01:04,255 INFO L87 Difference]: Start difference. First operand 166 states and 195 transitions. Second operand has 46 states, 45 states have (on average 3.4) internal successors, (153), 46 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) [2022-11-23 16:01:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:04,908 INFO L93 Difference]: Finished difference Result 208 states and 219 transitions. [2022-11-23 16:01:04,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-23 16:01:04,909 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.4) internal successors, (153), 46 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 [2022-11-23 16:01:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:04,910 INFO L225 Difference]: With dead ends: 208 [2022-11-23 16:01:04,911 INFO L226 Difference]: Without dead ends: 207 [2022-11-23 16:01:04,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 179 SyntacticMatches, 22 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2696 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1348, Invalid=4202, Unknown=0, NotChecked=0, Total=5550 [2022-11-23 16:01:04,914 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 316 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:04,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 148 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:01:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-23 16:01:04,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 168. [2022-11-23 16:01:04,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 167 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:04,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 186 transitions. [2022-11-23 16:01:04,923 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 186 transitions. Word has length 77 [2022-11-23 16:01:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:04,923 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 186 transitions. [2022-11-23 16:01:04,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.4) internal successors, (153), 46 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) [2022-11-23 16:01:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 186 transitions. [2022-11-23 16:01:04,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-23 16:01:04,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:04,925 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1, 1] [2022-11-23 16:01:04,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-23 16:01:05,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:05,131 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:01:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:05,131 INFO L85 PathProgramCache]: Analyzing trace with hash -538594285, now seen corresponding path program 3 times [2022-11-23 16:01:05,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:05,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544617809] [2022-11-23 16:01:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:05,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:05,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:05,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544617809] [2022-11-23 16:01:05,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544617809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:05,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525197563] [2022-11-23 16:01:05,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:01:05,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:05,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:05,331 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:05,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 16:01:05,406 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:01:05,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:01:05,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 16:01:05,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:05,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:05,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525197563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:05,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1988887295] [2022-11-23 16:01:05,845 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:01:05,845 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:05,846 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:05,846 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:05,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:06,026 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:07,436 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6972#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~y~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:01:07,436 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:01:07,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:07,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-23 16:01:07,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660026262] [2022-11-23 16:01:07,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:01:07,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-23 16:01:07,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:07,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-23 16:01:07,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=635, Unknown=0, NotChecked=0, Total=930 [2022-11-23 16:01:07,439 INFO L87 Difference]: Start difference. First operand 168 states and 186 transitions. Second operand has 24 states, 23 states have (on average 6.739130434782608) internal successors, (155), 24 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:07,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:07,549 INFO L93 Difference]: Finished difference Result 198 states and 209 transitions. [2022-11-23 16:01:07,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 16:01:07,550 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.739130434782608) internal successors, (155), 24 states have internal predecessors, (155), 0 states have call successors, (0), 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 78 [2022-11-23 16:01:07,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:07,551 INFO L225 Difference]: With dead ends: 198 [2022-11-23 16:01:07,551 INFO L226 Difference]: Without dead ends: 197 [2022-11-23 16:01:07,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 193 SyntacticMatches, 22 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=295, Invalid=635, Unknown=0, NotChecked=0, Total=930 [2022-11-23 16:01:07,553 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:07,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 185 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:01:07,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-23 16:01:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 169. [2022-11-23 16:01:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 165 states have (on average 1.0666666666666667) internal successors, (176), 168 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 176 transitions. [2022-11-23 16:01:07,562 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 176 transitions. Word has length 78 [2022-11-23 16:01:07,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:07,563 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 176 transitions. [2022-11-23 16:01:07,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.739130434782608) internal successors, (155), 24 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:07,563 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 176 transitions. [2022-11-23 16:01:07,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-23 16:01:07,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:07,564 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:07,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:07,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-23 16:01:07,770 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:01:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1232238673, now seen corresponding path program 4 times [2022-11-23 16:01:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:07,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147358472] [2022-11-23 16:01:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:08,691 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:08,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147358472] [2022-11-23 16:01:08,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147358472] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:08,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911441434] [2022-11-23 16:01:08,692 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 16:01:08,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:08,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:08,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:08,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 16:01:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:08,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-23 16:01:08,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:10,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:11,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911441434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:11,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1957726632] [2022-11-23 16:01:11,832 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 16:01:11,832 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:11,832 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:11,832 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:11,833 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:12,045 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:15,884 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8179#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:01:15,884 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:01:15,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:15,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 47, 47] total 126 [2022-11-23 16:01:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912555717] [2022-11-23 16:01:15,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:01:15,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-11-23 16:01:15,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-11-23 16:01:15,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2294, Invalid=16066, Unknown=0, NotChecked=0, Total=18360 [2022-11-23 16:01:15,893 INFO L87 Difference]: Start difference. First operand 169 states and 176 transitions. Second operand has 127 states, 126 states have (on average 2.626984126984127) internal successors, (331), 127 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:18,618 INFO L93 Difference]: Finished difference Result 303 states and 318 transitions. [2022-11-23 16:01:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-11-23 16:01:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 126 states have (on average 2.626984126984127) internal successors, (331), 127 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-11-23 16:01:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:18,620 INFO L225 Difference]: With dead ends: 303 [2022-11-23 16:01:18,620 INFO L226 Difference]: Without dead ends: 254 [2022-11-23 16:01:18,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 200 SyntacticMatches, 31 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24971 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=5923, Invalid=35489, Unknown=0, NotChecked=0, Total=41412 [2022-11-23 16:01:18,626 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 572 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:18,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 207 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:01:18,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-23 16:01:18,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 227. [2022-11-23 16:01:18,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 223 states have (on average 1.1255605381165918) internal successors, (251), 226 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:18,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 251 transitions. [2022-11-23 16:01:18,638 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 251 transitions. Word has length 111 [2022-11-23 16:01:18,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:18,638 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 251 transitions. [2022-11-23 16:01:18,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 126 states have (on average 2.626984126984127) internal successors, (331), 127 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:18,639 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 251 transitions. [2022-11-23 16:01:18,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-23 16:01:18,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:18,641 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1, 1] [2022-11-23 16:01:18,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:18,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-23 16:01:18,847 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:01:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:18,848 INFO L85 PathProgramCache]: Analyzing trace with hash -796015997, now seen corresponding path program 4 times [2022-11-23 16:01:18,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:18,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177328002] [2022-11-23 16:01:18,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:18,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:20,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:20,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177328002] [2022-11-23 16:01:20,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177328002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:20,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856458475] [2022-11-23 16:01:20,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 16:01:20,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:20,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:20,353 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:20,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 16:01:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:20,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 16:01:20,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:20,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:22,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856458475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:22,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [563950530] [2022-11-23 16:01:22,679 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:01:22,679 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:22,680 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:22,681 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:22,681 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:22,872 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:25,272 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9960#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 0) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2022-11-23 16:01:25,272 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:01:25,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:25,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2022-11-23 16:01:25,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507217491] [2022-11-23 16:01:25,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:01:25,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-11-23 16:01:25,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:25,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-11-23 16:01:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2276, Invalid=7824, Unknown=0, NotChecked=0, Total=10100 [2022-11-23 16:01:25,276 INFO L87 Difference]: Start difference. First operand 227 states and 251 transitions. Second operand has 94 states, 93 states have (on average 3.4086021505376345) internal successors, (317), 94 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:27,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:27,225 INFO L93 Difference]: Finished difference Result 441 states and 464 transitions. [2022-11-23 16:01:27,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-23 16:01:27,226 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.4086021505376345) internal successors, (317), 94 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-11-23 16:01:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:27,228 INFO L225 Difference]: With dead ends: 441 [2022-11-23 16:01:27,228 INFO L226 Difference]: Without dead ends: 440 [2022-11-23 16:01:27,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 378 SyntacticMatches, 45 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11208 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=5565, Invalid=15897, Unknown=0, NotChecked=0, Total=21462 [2022-11-23 16:01:27,230 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 808 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:27,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 301 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:01:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-23 16:01:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 334. [2022-11-23 16:01:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 330 states have (on average 1.196969696969697) internal successors, (395), 333 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 395 transitions. [2022-11-23 16:01:27,248 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 395 transitions. Word has length 159 [2022-11-23 16:01:27,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:27,249 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 395 transitions. [2022-11-23 16:01:27,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.4086021505376345) internal successors, (317), 94 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 395 transitions. [2022-11-23 16:01:27,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-23 16:01:27,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:27,251 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 1, 1, 1] [2022-11-23 16:01:27,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:27,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:27,458 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:01:27,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:27,458 INFO L85 PathProgramCache]: Analyzing trace with hash -467192763, now seen corresponding path program 4 times [2022-11-23 16:01:27,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:27,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640154710] [2022-11-23 16:01:27,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:27,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:28,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:28,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640154710] [2022-11-23 16:01:28,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640154710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:28,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823630118] [2022-11-23 16:01:28,947 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 16:01:28,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:28,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:28,949 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:28,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 16:01:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:29,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-23 16:01:29,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:29,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:31,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823630118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:31,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1201821357] [2022-11-23 16:01:31,344 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:01:31,345 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:31,345 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:31,345 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:31,345 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:31,556 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:34,011 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11982#(and (<= |ULTIMATE.start_main_~z~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 |#NULL.offset|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:01:34,012 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:01:34,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:34,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2022-11-23 16:01:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228795405] [2022-11-23 16:01:34,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:01:34,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-11-23 16:01:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:34,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-11-23 16:01:34,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2275, Invalid=7825, Unknown=0, NotChecked=0, Total=10100 [2022-11-23 16:01:34,016 INFO L87 Difference]: Start difference. First operand 334 states and 395 transitions. Second operand has 94 states, 93 states have (on average 3.4516129032258065) internal successors, (321), 94 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:35,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:35,975 INFO L93 Difference]: Finished difference Result 420 states and 443 transitions. [2022-11-23 16:01:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-23 16:01:35,976 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.4516129032258065) internal successors, (321), 94 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-11-23 16:01:35,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:35,978 INFO L225 Difference]: With dead ends: 420 [2022-11-23 16:01:35,978 INFO L226 Difference]: Without dead ends: 419 [2022-11-23 16:01:35,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 383 SyntacticMatches, 46 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11342 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=5564, Invalid=15898, Unknown=0, NotChecked=0, Total=21462 [2022-11-23 16:01:35,981 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 543 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:35,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 283 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:01:35,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-11-23 16:01:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 336. [2022-11-23 16:01:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 332 states have (on average 1.1265060240963856) internal successors, (374), 335 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:35,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 374 transitions. [2022-11-23 16:01:35,998 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 374 transitions. Word has length 161 [2022-11-23 16:01:35,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:35,999 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 374 transitions. [2022-11-23 16:01:35,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.4516129032258065) internal successors, (321), 94 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:35,999 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 374 transitions. [2022-11-23 16:01:36,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-23 16:01:36,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:36,001 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 22, 1, 1, 1] [2022-11-23 16:01:36,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-23 16:01:36,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-23 16:01:36,207 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:01:36,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:36,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1598073709, now seen corresponding path program 4 times [2022-11-23 16:01:36,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:36,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554776898] [2022-11-23 16:01:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:36,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:36,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:36,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554776898] [2022-11-23 16:01:36,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554776898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:36,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775665164] [2022-11-23 16:01:36,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 16:01:36,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:36,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:36,855 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:36,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-23 16:01:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:36,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 16:01:36,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:37,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:38,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775665164] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:38,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [964634919] [2022-11-23 16:01:38,093 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:01:38,093 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:38,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:38,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:38,094 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:38,265 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:41,249 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13945#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~y~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:01:41,249 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:01:41,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:41,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-23 16:01:41,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226242382] [2022-11-23 16:01:41,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:01:41,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-23 16:01:41,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-23 16:01:41,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1147, Invalid=1823, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 16:01:41,252 INFO L87 Difference]: Start difference. First operand 336 states and 374 transitions. Second operand has 48 states, 47 states have (on average 6.872340425531915) internal successors, (323), 48 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:41,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:41,453 INFO L93 Difference]: Finished difference Result 398 states and 421 transitions. [2022-11-23 16:01:41,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 16:01:41,453 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.872340425531915) internal successors, (323), 48 states have internal predecessors, (323), 0 states have call successors, (0), 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 162 [2022-11-23 16:01:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:41,455 INFO L225 Difference]: With dead ends: 398 [2022-11-23 16:01:41,455 INFO L226 Difference]: Without dead ends: 397 [2022-11-23 16:01:41,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 409 SyntacticMatches, 46 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3713 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1147, Invalid=1823, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 16:01:41,457 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 241 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:41,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 308 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:01:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-23 16:01:41,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 337. [2022-11-23 16:01:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 333 states have (on average 1.057057057057057) internal successors, (352), 336 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:41,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 352 transitions. [2022-11-23 16:01:41,481 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 352 transitions. Word has length 162 [2022-11-23 16:01:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:41,482 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 352 transitions. [2022-11-23 16:01:41,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.872340425531915) internal successors, (323), 48 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 352 transitions. [2022-11-23 16:01:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-23 16:01:41,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:41,485 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:41,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:41,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-23 16:01:41,691 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:01:41,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:41,692 INFO L85 PathProgramCache]: Analyzing trace with hash -828247633, now seen corresponding path program 5 times [2022-11-23 16:01:41,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:41,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4567700] [2022-11-23 16:01:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:41,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3286 backedges. 0 proven. 3286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:44,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:44,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4567700] [2022-11-23 16:01:44,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4567700] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:44,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191777501] [2022-11-23 16:01:44,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:01:44,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:44,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:44,520 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:44,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-23 16:01:44,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-11-23 16:01:44,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:01:44,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 127 conjunts are in the unsatisfiable core [2022-11-23 16:01:44,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:48,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3286 backedges. 0 proven. 3286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:48,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3286 backedges. 0 proven. 3286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:54,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191777501] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:54,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [48570689] [2022-11-23 16:01:54,309 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 16:01:54,309 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:54,310 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:54,310 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:54,310 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:54,513 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:02:04,881 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16368#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:02:04,881 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:02:04,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:02:04,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 95, 95] total 254 [2022-11-23 16:02:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134041799] [2022-11-23 16:02:04,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:02:04,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 255 states [2022-11-23 16:02:04,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2022-11-23 16:02:04,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8910, Invalid=60522, Unknown=0, NotChecked=0, Total=69432 [2022-11-23 16:02:04,887 INFO L87 Difference]: Start difference. First operand 337 states and 352 transitions. Second operand has 255 states, 254 states have (on average 2.625984251968504) internal successors, (667), 255 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:13,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:13,914 INFO L93 Difference]: Finished difference Result 599 states and 630 transitions. [2022-11-23 16:02:13,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2022-11-23 16:02:13,915 INFO L78 Accepts]: Start accepts. Automaton has has 255 states, 254 states have (on average 2.625984251968504) internal successors, (667), 255 states have internal predecessors, (667), 0 states have call successors, (0), 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 223 [2022-11-23 16:02:13,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:13,917 INFO L225 Difference]: With dead ends: 599 [2022-11-23 16:02:13,918 INFO L226 Difference]: Without dead ends: 502 [2022-11-23 16:02:13,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 873 GetRequests, 408 SyntacticMatches, 63 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101467 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=23595, Invalid=139217, Unknown=0, NotChecked=0, Total=162812 [2022-11-23 16:02:13,927 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1704 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:13,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 277 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 16:02:13,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-11-23 16:02:13,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 451. [2022-11-23 16:02:13,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 447 states have (on average 1.116331096196868) internal successors, (499), 450 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 499 transitions. [2022-11-23 16:02:13,950 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 499 transitions. Word has length 223 [2022-11-23 16:02:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:13,950 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 499 transitions. [2022-11-23 16:02:13,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 255 states, 254 states have (on average 2.625984251968504) internal successors, (667), 255 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 499 transitions. [2022-11-23 16:02:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-23 16:02:13,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:13,956 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1, 1] [2022-11-23 16:02:13,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-23 16:02:14,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:14,163 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:02:14,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:14,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1935532419, now seen corresponding path program 5 times [2022-11-23 16:02:14,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:14,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678685068] [2022-11-23 16:02:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:14,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:02:20,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:20,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678685068] [2022-11-23 16:02:20,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678685068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:02:20,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419447758] [2022-11-23 16:02:20,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:02:20,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:20,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:02:20,011 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:02:20,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-23 16:02:20,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-23 16:02:20,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:02:20,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-23 16:02:20,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:02:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:02:20,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:02:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:02:28,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419447758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:02:28,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [667326221] [2022-11-23 16:02:28,526 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:02:28,527 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:02:28,527 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:02:28,527 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:02:28,527 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:02:28,685 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:02:36,468 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19981#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 0) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2022-11-23 16:02:36,468 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:02:36,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:02:36,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2022-11-23 16:02:36,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734989764] [2022-11-23 16:02:36,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:02:36,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2022-11-23 16:02:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:02:36,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2022-11-23 16:02:36,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9140, Invalid=29472, Unknown=0, NotChecked=0, Total=38612 [2022-11-23 16:02:36,474 INFO L87 Difference]: Start difference. First operand 451 states and 499 transitions. Second operand has 190 states, 189 states have (on average 3.455026455026455) internal successors, (653), 190 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:43,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:02:43,887 INFO L93 Difference]: Finished difference Result 889 states and 936 transitions. [2022-11-23 16:02:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-11-23 16:02:43,888 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 3.455026455026455) internal successors, (653), 190 states have internal predecessors, (653), 0 states have call successors, (0), 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 327 [2022-11-23 16:02:43,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:02:43,892 INFO L225 Difference]: With dead ends: 889 [2022-11-23 16:02:43,892 INFO L226 Difference]: Without dead ends: 888 [2022-11-23 16:02:43,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1168 GetRequests, 786 SyntacticMatches, 93 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45480 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=22629, Invalid=61761, Unknown=0, NotChecked=0, Total=84390 [2022-11-23 16:02:43,897 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1916 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:02:43,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 540 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:02:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2022-11-23 16:02:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 670. [2022-11-23 16:02:43,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 666 states have (on average 1.1936936936936937) internal successors, (795), 669 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 795 transitions. [2022-11-23 16:02:43,931 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 795 transitions. Word has length 327 [2022-11-23 16:02:43,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:02:43,932 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 795 transitions. [2022-11-23 16:02:43,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 3.455026455026455) internal successors, (653), 190 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:02:43,932 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 795 transitions. [2022-11-23 16:02:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-23 16:02:43,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:02:43,934 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 1, 1, 1] [2022-11-23 16:02:43,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-23 16:02:44,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:44,141 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:02:44,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:02:44,142 INFO L85 PathProgramCache]: Analyzing trace with hash 325817157, now seen corresponding path program 5 times [2022-11-23 16:02:44,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:02:44,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141252894] [2022-11-23 16:02:44,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:02:44,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:02:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:02:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:02:49,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:02:49,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141252894] [2022-11-23 16:02:49,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141252894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:02:49,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079457970] [2022-11-23 16:02:49,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:02:49,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:02:49,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:02:49,589 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:02:49,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-23 16:02:50,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-23 16:02:50,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:02:50,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-23 16:02:50,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:02:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:02:50,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:02:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:02:58,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079457970] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:02:58,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [453515397] [2022-11-23 16:02:58,039 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:02:58,039 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:02:58,039 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:02:58,040 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:02:58,040 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:02:58,224 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:03:13,407 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24083#(and (<= |ULTIMATE.start_main_~z~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 |#NULL.offset|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:03:13,407 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:03:13,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:03:13,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2022-11-23 16:03:13,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682329428] [2022-11-23 16:03:13,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:03:13,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2022-11-23 16:03:13,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:13,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2022-11-23 16:03:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9135, Invalid=29477, Unknown=0, NotChecked=0, Total=38612 [2022-11-23 16:03:13,414 INFO L87 Difference]: Start difference. First operand 670 states and 795 transitions. Second operand has 190 states, 189 states have (on average 3.4761904761904763) internal successors, (657), 190 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:03:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:03:21,017 INFO L93 Difference]: Finished difference Result 844 states and 891 transitions. [2022-11-23 16:03:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-11-23 16:03:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 3.4761904761904763) internal successors, (657), 190 states have internal predecessors, (657), 0 states have call successors, (0), 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 329 [2022-11-23 16:03:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:03:21,020 INFO L225 Difference]: With dead ends: 844 [2022-11-23 16:03:21,021 INFO L226 Difference]: Without dead ends: 843 [2022-11-23 16:03:21,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 791 SyntacticMatches, 94 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45428 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=22624, Invalid=61766, Unknown=0, NotChecked=0, Total=84390 [2022-11-23 16:03:21,027 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1601 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:03:21,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1601 Valid, 517 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:03:21,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-23 16:03:21,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 672. [2022-11-23 16:03:21,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 668 states have (on average 1.122754491017964) internal successors, (750), 671 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:03:21,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 750 transitions. [2022-11-23 16:03:21,059 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 750 transitions. Word has length 329 [2022-11-23 16:03:21,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:03:21,060 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 750 transitions. [2022-11-23 16:03:21,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 3.4761904761904763) internal successors, (657), 190 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:03:21,061 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 750 transitions. [2022-11-23 16:03:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-23 16:03:21,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:21,063 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 46, 1, 1, 1] [2022-11-23 16:03:21,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-23 16:03:21,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:03:21,269 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:03:21,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:21,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1510397331, now seen corresponding path program 5 times [2022-11-23 16:03:21,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:21,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551694107] [2022-11-23 16:03:21,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:21,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7521 backedges. 0 proven. 7521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:03:23,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:23,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551694107] [2022-11-23 16:03:23,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551694107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:03:23,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842085201] [2022-11-23 16:03:23,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 16:03:23,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:03:23,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:03:23,461 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:03:23,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-23 16:03:24,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-23 16:03:24,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:03:24,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-23 16:03:24,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:03:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7521 backedges. 0 proven. 7521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:03:24,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:03:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7521 backedges. 0 proven. 7521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:03:27,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842085201] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:03:27,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [720764048] [2022-11-23 16:03:27,678 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:03:27,678 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:03:27,678 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:03:27,679 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:03:27,679 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:03:27,858 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:03:36,494 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28054#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~y~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:03:36,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:03:36,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:03:36,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-23 16:03:36,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405713540] [2022-11-23 16:03:36,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:03:36,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-23 16:03:36,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:36,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-23 16:03:36,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4579, Invalid=5927, Unknown=0, NotChecked=0, Total=10506 [2022-11-23 16:03:36,499 INFO L87 Difference]: Start difference. First operand 672 states and 750 transitions. Second operand has 96 states, 95 states have (on average 6.936842105263158) internal successors, (659), 96 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:03:37,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:03:37,086 INFO L93 Difference]: Finished difference Result 798 states and 845 transitions. [2022-11-23 16:03:37,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-23 16:03:37,087 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.936842105263158) internal successors, (659), 96 states have internal predecessors, (659), 0 states have call successors, (0), 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 330 [2022-11-23 16:03:37,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:03:37,091 INFO L225 Difference]: With dead ends: 798 [2022-11-23 16:03:37,091 INFO L226 Difference]: Without dead ends: 797 [2022-11-23 16:03:37,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 841 SyntacticMatches, 94 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14369 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=4579, Invalid=5927, Unknown=0, NotChecked=0, Total=10506 [2022-11-23 16:03:37,093 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 394 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:03:37,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 604 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 16:03:37,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-11-23 16:03:37,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 673. [2022-11-23 16:03:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 669 states have (on average 1.0523168908819134) internal successors, (704), 672 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:03:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 704 transitions. [2022-11-23 16:03:37,129 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 704 transitions. Word has length 330 [2022-11-23 16:03:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:03:37,130 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 704 transitions. [2022-11-23 16:03:37,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.936842105263158) internal successors, (659), 96 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:03:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 704 transitions. [2022-11-23 16:03:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-23 16:03:37,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:37,134 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2022-11-23 16:03:37,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-23 16:03:37,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-23 16:03:37,341 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:03:37,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:37,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1020869201, now seen corresponding path program 6 times [2022-11-23 16:03:37,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:37,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230001974] [2022-11-23 16:03:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:37,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 13734 backedges. 0 proven. 13734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:03:46,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:46,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230001974] [2022-11-23 16:03:46,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230001974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:03:46,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641404329] [2022-11-23 16:03:46,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:03:46,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:03:46,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:03:46,815 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:03:46,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-23 16:03:47,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:03:47,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:03:47,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 255 conjunts are in the unsatisfiable core [2022-11-23 16:03:47,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:04:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 13734 backedges. 0 proven. 13734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:00,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:04:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 13734 backedges. 0 proven. 13734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:04:20,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641404329] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:04:20,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [571208219] [2022-11-23 16:04:20,813 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 16:04:20,813 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:04:20,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:04:20,814 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:04:20,814 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:04:21,031 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:04:54,321 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32909#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:04:54,321 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:04:54,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:04:54,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 191, 191] total 510 [2022-11-23 16:04:54,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162605104] [2022-11-23 16:04:54,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:04:54,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 511 states [2022-11-23 16:04:54,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:54,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 511 interpolants. [2022-11-23 16:04:54,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35198, Invalid=234682, Unknown=0, NotChecked=0, Total=269880 [2022-11-23 16:04:54,396 INFO L87 Difference]: Start difference. First operand 673 states and 704 transitions. Second operand has 511 states, 510 states have (on average 2.6254901960784314) internal successors, (1339), 511 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:05:31,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:31,812 INFO L93 Difference]: Finished difference Result 1191 states and 1254 transitions. [2022-11-23 16:05:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 413 states. [2022-11-23 16:05:31,813 INFO L78 Accepts]: Start accepts. Automaton has has 511 states, 510 states have (on average 2.6254901960784314) internal successors, (1339), 511 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 447 [2022-11-23 16:05:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:31,818 INFO L225 Difference]: With dead ends: 1191 [2022-11-23 16:05:31,818 INFO L226 Difference]: Without dead ends: 998 [2022-11-23 16:05:31,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1753 GetRequests, 824 SyntacticMatches, 127 SemanticMatches, 802 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408827 ImplicationChecksByTransitivity, 97.7s TimeCoverageRelationStatistics Valid=94267, Invalid=551345, Unknown=0, NotChecked=0, Total=645612 [2022-11-23 16:05:31,855 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3713 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 979 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3713 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 979 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:31,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3713 Valid, 528 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [979 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 16:05:31,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-11-23 16:05:31,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 899. [2022-11-23 16:05:31,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 895 states have (on average 1.111731843575419) internal successors, (995), 898 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:05:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 995 transitions. [2022-11-23 16:05:31,897 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 995 transitions. Word has length 447 [2022-11-23 16:05:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:31,899 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 995 transitions. [2022-11-23 16:05:31,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 511 states, 510 states have (on average 2.6254901960784314) internal successors, (1339), 511 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:05:31,900 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 995 transitions. [2022-11-23 16:05:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-11-23 16:05:31,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:31,905 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 1, 1, 1] [2022-11-23 16:05:31,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-23 16:05:32,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-23 16:05:32,112 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:05:32,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:32,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1825382275, now seen corresponding path program 6 times [2022-11-23 16:05:32,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:32,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558401393] [2022-11-23 16:05:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:32,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:05:54,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:54,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558401393] [2022-11-23 16:05:54,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558401393] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:05:54,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695615698] [2022-11-23 16:05:54,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:05:54,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:05:54,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:05:54,098 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:05:54,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-23 16:05:54,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:05:54,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:05:54,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-23 16:05:54,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:05:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:05:55,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:06:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:06:25,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695615698] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:06:25,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [420513394] [2022-11-23 16:06:25,764 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:06:25,764 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:06:25,764 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:06:25,764 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:06:25,765 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:06:25,931 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:06:54,523 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40186#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 0) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2022-11-23 16:06:54,523 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:06:54,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:06:54,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2022-11-23 16:06:54,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262902857] [2022-11-23 16:06:54,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:06:54,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2022-11-23 16:06:54,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:06:54,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2022-11-23 16:06:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36692, Invalid=114240, Unknown=0, NotChecked=0, Total=150932 [2022-11-23 16:06:54,538 INFO L87 Difference]: Start difference. First operand 899 states and 995 transitions. Second operand has 382 states, 381 states have (on average 3.477690288713911) internal successors, (1325), 382 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:31,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:07:31,139 INFO L93 Difference]: Finished difference Result 1785 states and 1880 transitions. [2022-11-23 16:07:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2022-11-23 16:07:31,140 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 3.477690288713911) internal successors, (1325), 382 states have internal predecessors, (1325), 0 states have call successors, (0), 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 663 [2022-11-23 16:07:31,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:07:31,144 INFO L225 Difference]: With dead ends: 1785 [2022-11-23 16:07:31,144 INFO L226 Difference]: Without dead ends: 1784 [2022-11-23 16:07:31,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2368 GetRequests, 1602 SyntacticMatches, 189 SemanticMatches, 577 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183144 ImplicationChecksByTransitivity, 89.9s TimeCoverageRelationStatistics Valid=91317, Invalid=243345, Unknown=0, NotChecked=0, Total=334662 [2022-11-23 16:07:31,169 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4368 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4368 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:07:31,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4368 Valid, 1098 Invalid, 1316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [102 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 16:07:31,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2022-11-23 16:07:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1342. [2022-11-23 16:07:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1338 states have (on average 1.1920777279521675) internal successors, (1595), 1341 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1595 transitions. [2022-11-23 16:07:31,221 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1595 transitions. Word has length 663 [2022-11-23 16:07:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:07:31,222 INFO L495 AbstractCegarLoop]: Abstraction has 1342 states and 1595 transitions. [2022-11-23 16:07:31,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 3.477690288713911) internal successors, (1325), 382 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:07:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1595 transitions. [2022-11-23 16:07:31,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2022-11-23 16:07:31,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:31,228 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 94, 1, 1, 1] [2022-11-23 16:07:31,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-23 16:07:31,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:07:31,437 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:07:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1845711173, now seen corresponding path program 6 times [2022-11-23 16:07:31,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:07:31,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923707239] [2022-11-23 16:07:31,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:31,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:07:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 31067 backedges. 0 proven. 31067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:51,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:07:51,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923707239] [2022-11-23 16:07:51,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923707239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:07:51,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021558345] [2022-11-23 16:07:51,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:07:51,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:07:51,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:07:51,787 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:07:51,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-23 16:07:52,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:07:52,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:07:52,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 191 conjunts are in the unsatisfiable core [2022-11-23 16:07:52,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:07:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 31067 backedges. 0 proven. 31067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:07:53,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:08:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 31067 backedges. 0 proven. 31067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:08:22,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021558345] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:08:22,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2014225808] [2022-11-23 16:08:22,671 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:08:22,671 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:08:22,671 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:08:22,671 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:08:22,671 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:08:22,835 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:09:24,635 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '48448#(and (<= |ULTIMATE.start_main_~z~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= 0 |#NULL.offset|) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:09:24,635 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:09:24,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:09:24,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2022-11-23 16:09:24,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504572296] [2022-11-23 16:09:24,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:09:24,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2022-11-23 16:09:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:09:24,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2022-11-23 16:09:24,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36687, Invalid=114245, Unknown=0, NotChecked=0, Total=150932 [2022-11-23 16:09:24,651 INFO L87 Difference]: Start difference. First operand 1342 states and 1595 transitions. Second operand has 382 states, 381 states have (on average 3.4881889763779528) internal successors, (1329), 382 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:04,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:04,973 INFO L93 Difference]: Finished difference Result 1692 states and 1787 transitions. [2022-11-23 16:10:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2022-11-23 16:10:04,974 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 3.4881889763779528) internal successors, (1329), 382 states have internal predecessors, (1329), 0 states have call successors, (0), 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 665 [2022-11-23 16:10:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:04,980 INFO L225 Difference]: With dead ends: 1692 [2022-11-23 16:10:04,981 INFO L226 Difference]: Without dead ends: 1691 [2022-11-23 16:10:05,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2374 GetRequests, 1607 SyntacticMatches, 190 SemanticMatches, 577 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183044 ImplicationChecksByTransitivity, 124.8s TimeCoverageRelationStatistics Valid=91312, Invalid=243350, Unknown=0, NotChecked=0, Total=334662 [2022-11-23 16:10:05,008 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3154 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3154 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:05,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3154 Valid, 1010 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 16:10:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2022-11-23 16:10:05,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1344. [2022-11-23 16:10:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1340 states have (on average 1.1208955223880597) internal successors, (1502), 1343 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1502 transitions. [2022-11-23 16:10:05,078 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1502 transitions. Word has length 665 [2022-11-23 16:10:05,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:05,079 INFO L495 AbstractCegarLoop]: Abstraction has 1344 states and 1502 transitions. [2022-11-23 16:10:05,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 3.4881889763779528) internal successors, (1329), 382 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1502 transitions. [2022-11-23 16:10:05,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2022-11-23 16:10:05,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:05,087 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 95, 94, 94, 1, 1, 1] [2022-11-23 16:10:05,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:05,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-23 16:10:05,303 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:10:05,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:05,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1382471571, now seen corresponding path program 6 times [2022-11-23 16:10:05,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:05,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762400025] [2022-11-23 16:10:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:05,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 31161 backedges. 0 proven. 31161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:12,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:12,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762400025] [2022-11-23 16:10:12,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762400025] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:10:12,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563205513] [2022-11-23 16:10:12,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 16:10:12,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:10:12,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:12,690 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:10:12,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-23 16:10:12,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 16:10:12,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 16:10:12,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-23 16:10:12,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:10:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 31161 backedges. 0 proven. 31161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:13,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:10:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 31161 backedges. 0 proven. 31161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:10:27,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563205513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:10:27,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1153426059] [2022-11-23 16:10:27,007 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-23 16:10:27,008 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:10:27,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:10:27,008 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:10:27,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:10:27,183 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:42,821 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '56435#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 16:10:42,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 16:10:42,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:42,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-11-23 16:10:42,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72982957] [2022-11-23 16:10:42,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 16:10:42,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-23 16:10:42,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-23 16:10:42,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18358, Invalid=21044, Unknown=0, NotChecked=0, Total=39402 [2022-11-23 16:10:42,830 INFO L87 Difference]: Start difference. First operand 1344 states and 1502 transitions. Second operand has 192 states, 191 states have (on average 6.968586387434555) internal successors, (1331), 192 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:45,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:45,699 INFO L93 Difference]: Finished difference Result 1598 states and 1693 transitions. [2022-11-23 16:10:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-23 16:10:45,700 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.968586387434555) internal successors, (1331), 192 states have internal predecessors, (1331), 0 states have call successors, (0), 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 666 [2022-11-23 16:10:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:45,705 INFO L225 Difference]: With dead ends: 1598 [2022-11-23 16:10:45,705 INFO L226 Difference]: Without dead ends: 1597 [2022-11-23 16:10:45,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2092 GetRequests, 1705 SyntacticMatches, 190 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56319 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=18358, Invalid=21044, Unknown=0, NotChecked=0, Total=39402 [2022-11-23 16:10:45,707 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1313 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:45,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1313 Valid, 1179 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 16:10:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2022-11-23 16:10:45,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1345. [2022-11-23 16:10:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1341 states have (on average 1.0499627143922445) internal successors, (1408), 1344 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1408 transitions. [2022-11-23 16:10:45,768 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1408 transitions. Word has length 666 [2022-11-23 16:10:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:45,768 INFO L495 AbstractCegarLoop]: Abstraction has 1345 states and 1408 transitions. [2022-11-23 16:10:45,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.968586387434555) internal successors, (1331), 192 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:10:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1408 transitions. [2022-11-23 16:10:45,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2022-11-23 16:10:45,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:45,778 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 127, 127, 127, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:45,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-23 16:10:45,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-23 16:10:45,986 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-23 16:10:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash 497053103, now seen corresponding path program 7 times [2022-11-23 16:10:45,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:45,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778319184] [2022-11-23 16:10:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:45,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 56134 backedges. 0 proven. 56134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:11:29,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:29,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778319184] [2022-11-23 16:11:29,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778319184] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:11:29,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14382619] [2022-11-23 16:11:29,632 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 16:11:29,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:11:29,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:11:29,639 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:11:29,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465d1569-7df4-432b-96c6-62348a97f9dc/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-23 16:11:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:30,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 2198 conjuncts, 511 conjunts are in the unsatisfiable core [2022-11-23 16:11:30,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 56134 backedges. 0 proven. 56134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:12:19,297 INFO L328 TraceCheckSpWp]: Computing backward predicates...