./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7 --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 a97cc7ecf3f325d6a4f94ad142da468f60264f8646a5f445527873ff4eb9457a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:32:57,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:32:57,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:32:57,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:32:57,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:32:57,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:32:57,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:32:57,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:32:57,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:32:57,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:32:57,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:32:57,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:32:57,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:32:57,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:32:57,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:32:57,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:32:57,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:32:57,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:32:57,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:32:57,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:32:57,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:32:57,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:32:57,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:32:57,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:32:57,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:32:57,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:32:57,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:32:57,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:32:57,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:32:57,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:32:57,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:32:57,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:32:57,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:32:57,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:32:57,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:32:57,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:32:57,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:32:57,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:32:57,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:32:57,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:32:57,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:32:57,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 18:32:57,992 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:32:57,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:32:57,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:32:57,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:32:57,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:32:57,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:32:57,995 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:32:57,995 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:32:57,995 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:32:57,995 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:32:57,995 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:32:57,996 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:32:57,996 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:32:57,996 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:32:57,996 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:32:57,997 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:32:57,997 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:32:57,997 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:32:57,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:32:57,998 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:32:57,998 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:32:57,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:32:58,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:32:58,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:32:58,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:32:58,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:32:58,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:32:58,005 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 18:32:58,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:32:58,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:32:58,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:32:58,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:32:58,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:32:58,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:32:58,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:32:58,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:32:58,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:32:58,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:32:58,009 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:32:58,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:32:58,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:32:58,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:32:58,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:32:58,012 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a97cc7ecf3f325d6a4f94ad142da468f60264f8646a5f445527873ff4eb9457a [2021-11-25 18:32:58,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:32:58,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:32:58,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:32:58,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:32:58,277 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:32:58,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i [2021-11-25 18:32:58,381 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/data/5faaac5a3/7b9c954e37d34b5faa21f818a53858c0/FLAG2df10333e [2021-11-25 18:32:58,796 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:32:58,797 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i [2021-11-25 18:32:58,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/data/5faaac5a3/7b9c954e37d34b5faa21f818a53858c0/FLAG2df10333e [2021-11-25 18:32:58,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/data/5faaac5a3/7b9c954e37d34b5faa21f818a53858c0 [2021-11-25 18:32:58,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:32:58,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:32:58,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:32:58,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:32:58,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:32:58,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:32:58" (1/1) ... [2021-11-25 18:32:58,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac6aba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:58, skipping insertion in model container [2021-11-25 18:32:58,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:32:58" (1/1) ... [2021-11-25 18:32:58,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:32:58,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:32:59,005 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i[873,886] [2021-11-25 18:32:59,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:32:59,020 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:32:59,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i[873,886] [2021-11-25 18:32:59,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:32:59,060 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:32:59,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59 WrapperNode [2021-11-25 18:32:59,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:32:59,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:32:59,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:32:59,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:32:59,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59" (1/1) ... [2021-11-25 18:32:59,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59" (1/1) ... [2021-11-25 18:32:59,094 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2021-11-25 18:32:59,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:32:59,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:32:59,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:32:59,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:32:59,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59" (1/1) ... [2021-11-25 18:32:59,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59" (1/1) ... [2021-11-25 18:32:59,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59" (1/1) ... [2021-11-25 18:32:59,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59" (1/1) ... [2021-11-25 18:32:59,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59" (1/1) ... [2021-11-25 18:32:59,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59" (1/1) ... [2021-11-25 18:32:59,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59" (1/1) ... [2021-11-25 18:32:59,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:32:59,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:32:59,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:32:59,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:32:59,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59" (1/1) ... [2021-11-25 18:32:59,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:32:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:32:59,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:32:59,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:32:59,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:32:59,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:32:59,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:32:59,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:32:59,245 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:32:59,246 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:32:59,336 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:32:59,358 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:32:59,358 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:32:59,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:59 BoogieIcfgContainer [2021-11-25 18:32:59,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:32:59,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:32:59,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:32:59,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:32:59,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:32:58" (1/3) ... [2021-11-25 18:32:59,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c89f927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:32:59, skipping insertion in model container [2021-11-25 18:32:59,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:32:59" (2/3) ... [2021-11-25 18:32:59,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c89f927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:32:59, skipping insertion in model container [2021-11-25 18:32:59,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:32:59" (3/3) ... [2021-11-25 18:32:59,368 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark20_conjunctive.i [2021-11-25 18:32:59,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:32:59,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-25 18:32:59,420 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:32:59,428 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:32:59,428 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 18:32:59,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 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) [2021-11-25 18:32:59,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:32:59,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:32:59,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:32:59,447 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:32:59,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:32:59,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2021-11-25 18:32:59,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:32:59,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400431742] [2021-11-25 18:32:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:32:59,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:32:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:32:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:32:59,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:32:59,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400431742] [2021-11-25 18:32:59,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400431742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:32:59,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:32:59,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:32:59,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737264200] [2021-11-25 18:32:59,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:32:59,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:32:59,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:32:59,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:32:59,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:32:59,642 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:32:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:32:59,686 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-25 18:32:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:32:59,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 18:32:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:32:59,696 INFO L225 Difference]: With dead ends: 19 [2021-11-25 18:32:59,696 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 18:32:59,699 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:32:59,703 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:32:59,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:32:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 18:32:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-11-25 18:32:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:32:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-25 18:32:59,734 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-11-25 18:32:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:32:59,735 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-25 18:32:59,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:32:59,735 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-25 18:32:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 18:32:59,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:32:59,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 18:32:59,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:32:59,736 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:32:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:32:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2021-11-25 18:32:59,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:32:59,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896079472] [2021-11-25 18:32:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:32:59,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:32:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:32:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:32:59,787 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:32:59,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896079472] [2021-11-25 18:32:59,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896079472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:32:59,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:32:59,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:32:59,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359914528] [2021-11-25 18:32:59,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:32:59,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:32:59,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:32:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:32:59,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:32:59,791 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:32:59,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:32:59,811 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-25 18:32:59,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:32:59,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 18:32:59,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:32:59,812 INFO L225 Difference]: With dead ends: 15 [2021-11-25 18:32:59,812 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 18:32:59,813 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:32:59,815 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:32:59,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:32:59,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 18:32:59,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 18:32:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:32:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-25 18:32:59,820 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-11-25 18:32:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:32:59,821 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-25 18:32:59,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:32:59,821 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-25 18:32:59,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:32:59,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:32:59,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:32:59,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:32:59,822 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:32:59,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:32:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2021-11-25 18:32:59,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:32:59,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948520725] [2021-11-25 18:32:59,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:32:59,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:32:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:32:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:32:59,890 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:32:59,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948520725] [2021-11-25 18:32:59,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948520725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:32:59,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:32:59,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:32:59,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344823792] [2021-11-25 18:32:59,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:32:59,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:32:59,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:32:59,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:32:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:32:59,894 INFO L87 Difference]: Start difference. First operand 14 states and 14 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) [2021-11-25 18:32:59,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:32:59,950 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-25 18:32:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:32:59,950 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 [2021-11-25 18:32:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:32:59,951 INFO L225 Difference]: With dead ends: 18 [2021-11-25 18:32:59,951 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:32:59,952 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:32:59,954 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:32:59,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:32:59,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:32:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-11-25 18:32:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:32:59,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-25 18:32:59,969 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2021-11-25 18:32:59,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:32:59,970 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-25 18:32:59,970 INFO L471 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) [2021-11-25 18:32:59,970 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-25 18:32:59,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:32:59,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:32:59,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:32:59,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:32:59,971 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:32:59,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:32:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2021-11-25 18:32:59,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:32:59,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925601419] [2021-11-25 18:32:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:32:59,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:32:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:00,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:00,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925601419] [2021-11-25 18:33:00,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925601419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:33:00,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:33:00,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:33:00,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911597731] [2021-11-25 18:33:00,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:33:00,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:33:00,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:33:00,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:33:00,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:33:00,014 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:33:00,041 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-25 18:33:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:33:00,042 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 [2021-11-25 18:33:00,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:33:00,042 INFO L225 Difference]: With dead ends: 15 [2021-11-25 18:33:00,042 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 18:33:00,043 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:33:00,044 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:33:00,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:33:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 18:33:00,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 18:33:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-25 18:33:00,049 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2021-11-25 18:33:00,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:33:00,050 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-25 18:33:00,050 INFO L471 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) [2021-11-25 18:33:00,050 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-25 18:33:00,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:33:00,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:33:00,051 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:33:00,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:33:00,051 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:33:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:33:00,052 INFO L85 PathProgramCache]: Analyzing trace with hash -803359244, now seen corresponding path program 1 times [2021-11-25 18:33:00,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:33:00,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804304922] [2021-11-25 18:33:00,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:00,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:33:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:00,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:00,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804304922] [2021-11-25 18:33:00,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804304922] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:33:00,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849317525] [2021-11-25 18:33:00,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:00,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:33:00,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:33:00,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:33:00,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:33:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:00,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:33:00,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:33:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:00,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:33:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:00,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849317525] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:33:00,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1984549550] [2021-11-25 18:33:00,509 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:33:00,509 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:33:00,514 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:33:00,519 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:33:00,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:33:01,035 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:33:01,720 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '234#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 100) (< 2147483647 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~sum~0#1|)) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:33:01,721 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:33:01,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:33:01,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-11-25 18:33:01,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559308628] [2021-11-25 18:33:01,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:33:01,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:33:01,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:33:01,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:33:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:33:01,724 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:01,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:33:01,827 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-11-25 18:33:01,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:33:01,827 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-25 18:33:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:33:01,828 INFO L225 Difference]: With dead ends: 25 [2021-11-25 18:33:01,828 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 18:33:01,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:33:01,831 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:33:01,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:33:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 18:33:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-11-25 18:33:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-25 18:33:01,836 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2021-11-25 18:33:01,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:33:01,836 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-25 18:33:01,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:01,837 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-25 18:33:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 18:33:01,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:33:01,838 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-25 18:33:01,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:33:02,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:33:02,056 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:33:02,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:33:02,057 INFO L85 PathProgramCache]: Analyzing trace with hash 865667262, now seen corresponding path program 1 times [2021-11-25 18:33:02,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:33:02,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55822703] [2021-11-25 18:33:02,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:02,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:33:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:02,126 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:02,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55822703] [2021-11-25 18:33:02,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55822703] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:33:02,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307597120] [2021-11-25 18:33:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:02,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:33:02,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:33:02,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:33:02,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:33:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:02,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:33:02,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:33:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:02,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:33:02,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307597120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:33:02,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:33:02,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-11-25 18:33:02,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178817155] [2021-11-25 18:33:02,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:33:02,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:33:02,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:33:02,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:33:02,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:33:02,284 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:02,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:33:02,324 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-25 18:33:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:33:02,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 18:33:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:33:02,327 INFO L225 Difference]: With dead ends: 22 [2021-11-25 18:33:02,327 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 18:33:02,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:33:02,336 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:33:02,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:33:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 18:33:02,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 18:33:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:02,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-25 18:33:02,345 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2021-11-25 18:33:02,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:33:02,346 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-25 18:33:02,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-25 18:33:02,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:33:02,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:33:02,348 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-11-25 18:33:02,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:33:02,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:33:02,581 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:33:02,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:33:02,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1065881398, now seen corresponding path program 1 times [2021-11-25 18:33:02,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:33:02,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015713565] [2021-11-25 18:33:02,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:02,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:33:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:02,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:02,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015713565] [2021-11-25 18:33:02,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015713565] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:33:02,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006917923] [2021-11-25 18:33:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:02,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:33:02,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:33:02,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:33:02,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:33:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:02,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:33:02,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:33:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:02,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:33:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:02,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006917923] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:33:02,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1317120739] [2021-11-25 18:33:02,779 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:33:02,779 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:33:02,779 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:33:02,779 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:33:02,779 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:33:03,071 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:33:03,704 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '462#(and (<= |ULTIMATE.start_main_~n~0#1| 100) (<= 0 |ULTIMATE.start_main_~sum~0#1|) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:33:03,704 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:33:03,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:33:03,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-25 18:33:03,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286334708] [2021-11-25 18:33:03,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:33:03,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:33:03,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:33:03,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:33:03,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:33:03,707 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:33:03,808 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-11-25 18:33:03,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:33:03,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 18:33:03,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:33:03,810 INFO L225 Difference]: With dead ends: 31 [2021-11-25 18:33:03,810 INFO L226 Difference]: Without dead ends: 30 [2021-11-25 18:33:03,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:33:03,811 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:33:03,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 8 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:33:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-25 18:33:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-11-25 18:33:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1153846153846154) 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) [2021-11-25 18:33:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-25 18:33:03,816 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 11 [2021-11-25 18:33:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:33:03,816 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-25 18:33:03,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-25 18:33:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:33:03,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:33:03,817 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1] [2021-11-25 18:33:03,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:33:04,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:33:04,018 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:33:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:33:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1075330740, now seen corresponding path program 2 times [2021-11-25 18:33:04,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:33:04,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66002180] [2021-11-25 18:33:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:04,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:33:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:04,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:04,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66002180] [2021-11-25 18:33:04,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66002180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:33:04,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614627554] [2021-11-25 18:33:04,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:33:04,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:33:04,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:33:04,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:33:04,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:33:04,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 18:33:04,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:33:04,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:33:04,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:33:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:04,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:33:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:04,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614627554] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:33:04,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1485503388] [2021-11-25 18:33:04,547 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:33:04,548 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:33:04,548 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:33:04,548 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:33:04,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:33:04,795 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:33:05,524 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '677#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 100) (< 2147483647 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~sum~0#1|)) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:33:05,525 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:33:05,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:33:05,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2021-11-25 18:33:05,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792957365] [2021-11-25 18:33:05,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:33:05,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 18:33:05,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:33:05,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 18:33:05,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:33:05,528 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:06,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:33:06,045 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-11-25 18:33:06,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-25 18:33:06,046 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-25 18:33:06,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:33:06,047 INFO L225 Difference]: With dead ends: 44 [2021-11-25 18:33:06,047 INFO L226 Difference]: Without dead ends: 43 [2021-11-25 18:33:06,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=315, Invalid=1665, Unknown=0, NotChecked=0, Total=1980 [2021-11-25 18:33:06,049 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:33:06,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 2 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:33:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-25 18:33:06,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-11-25 18:33:06,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-11-25 18:33:06,055 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 19 [2021-11-25 18:33:06,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:33:06,055 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-11-25 18:33:06,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:06,056 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-11-25 18:33:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 18:33:06,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:33:06,057 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2021-11-25 18:33:06,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:33:06,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:33:06,273 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:33:06,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:33:06,273 INFO L85 PathProgramCache]: Analyzing trace with hash 953924228, now seen corresponding path program 2 times [2021-11-25 18:33:06,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:33:06,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694770986] [2021-11-25 18:33:06,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:06,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:33:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:06,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:06,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694770986] [2021-11-25 18:33:06,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694770986] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:33:06,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834389196] [2021-11-25 18:33:06,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:33:06,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:33:06,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:33:06,368 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:33:06,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:33:06,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-25 18:33:06,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:33:06,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:33:06,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:33:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-25 18:33:06,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:33:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-25 18:33:06,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834389196] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:33:06,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2002915433] [2021-11-25 18:33:06,555 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:33:06,555 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:33:06,555 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:33:06,556 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:33:06,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:33:06,765 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:33:07,259 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '983#(and (<= |ULTIMATE.start_main_~n~0#1| 100) (<= 0 |ULTIMATE.start_main_~sum~0#1|) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:33:07,260 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:33:07,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:33:07,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2021-11-25 18:33:07,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719083906] [2021-11-25 18:33:07,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:33:07,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 18:33:07,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:33:07,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 18:33:07,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:33:07,263 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:33:07,495 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-11-25 18:33:07,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:33:07,495 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 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 26 [2021-11-25 18:33:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:33:07,496 INFO L225 Difference]: With dead ends: 41 [2021-11-25 18:33:07,496 INFO L226 Difference]: Without dead ends: 40 [2021-11-25 18:33:07,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=314, Invalid=1092, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 18:33:07,498 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:33:07,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:33:07,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-25 18:33:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-25 18:33:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-11-25 18:33:07,503 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 26 [2021-11-25 18:33:07,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:33:07,504 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-11-25 18:33:07,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:33:07,504 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-11-25 18:33:07,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 18:33:07,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:33:07,505 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1] [2021-11-25 18:33:07,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:33:07,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 18:33:07,733 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:33:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:33:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash 237862964, now seen corresponding path program 3 times [2021-11-25 18:33:07,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:33:07,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318318739] [2021-11-25 18:33:07,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:33:07,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:33:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:33:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:07,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:33:07,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318318739] [2021-11-25 18:33:07,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318318739] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:33:07,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327805865] [2021-11-25 18:33:07,973 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:33:07,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:33:07,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:33:07,974 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:33:07,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:33:08,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:33:08,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:33:08,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 18:33:08,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:33:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:33:08,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:34:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 113 refuted. 6 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:34:27,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327805865] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:34:27,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [873876534] [2021-11-25 18:34:27,323 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:34:27,323 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:34:27,323 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:34:27,323 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:34:27,324 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:34:27,517 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:34:28,463 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1389#(and (<= 1 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 100) (< 2147483647 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~sum~0#1|)) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:34:28,464 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:34:28,464 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:34:28,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 17] total 47 [2021-11-25 18:34:28,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116667332] [2021-11-25 18:34:28,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:34:28,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 18:34:28,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:34:28,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 18:34:28,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=2645, Unknown=33, NotChecked=0, Total=2970 [2021-11-25 18:34:28,468 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 48 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:34:31,608 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_#t~post4#1| 1)) (.cse1 (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)))) (and (<= .cse0 (div (+ (div (+ .cse1 2147483639) 2) 1) 2)) (forall ((|aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77| Int) (|aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72| Int) (|aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| Int)) (let ((.cse2 (* 2 |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|))) (let ((.cse4 (+ .cse2 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|)) (.cse3 (* 2 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|)) (.cse7 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse12 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165|)) (.cse5 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72|)) (.cse8 (* 5 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423|)) (.cse6 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401|)) (.cse9 (* 4 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse10 (* 2 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|)) (.cse11 (* 4 |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|))) (or (<= (+ .cse2 |c_ULTIMATE.start_main_#t~post4#1| |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| |aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72| 10) 0) (<= (+ 2 .cse3) .cse4) (<= 0 (+ .cse5 .cse6 9 .cse7 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|)) (<= (+ |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| |c_ULTIMATE.start_main_#t~post4#1| 1) (div (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401| (- 5)) (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) 2147483630) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) (+ 2147483643 .cse5)) (<= 2 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|) (<= (+ .cse8 .cse6 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1| .cse9) (+ .cse10 .cse11 2147483638)) (<= (+ |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| 1) |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165|) (< |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 0) (< .cse4 .cse3) (<= (+ .cse5 .cse6 .cse7 |c_ULTIMATE.start_main_#t~post4#1| 17) 0) (<= (+ 5 .cse12) .cse8) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401| 1)) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| (+ |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 1)) (<= |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165| (+ (div (+ (* |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 2) (* |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| (- 2)) (* |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 4) 4) 4) 1)) (<= (+ .cse10 .cse11 |c_ULTIMATE.start_main_#t~post4#1| 15) (+ .cse8 .cse7)) (<= (+ .cse10 .cse11 4) (+ .cse5 .cse12 .cse6 .cse9)) (<= (+ .cse5 .cse8 7 .cse6 .cse9) (+ .cse10 .cse11)) (<= (+ 2 |c_ULTIMATE.start_main_#t~post4#1|) |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|))))) (<= |c_ULTIMATE.start_main_#t~post4#1| (div (+ .cse1 2147483641 (* |c_ULTIMATE.start_main_#t~post4#1| (- 1))) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483646) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| Int)) (or (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) (<= (div (+ (* |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| 5) |c_ULTIMATE.start_main_~sum~0#1| (- 2147483637)) (- 2)) 0) (<= (+ (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) 1) (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483634) 2)))) (<= .cse0 (div (+ .cse1 2147483646) 2)) (<= |c_ULTIMATE.start_main_~i~0#1| (div (+ (- 1) (div (+ (* |c_ULTIMATE.start_main_~i~0#1| (- 1)) .cse1 2147483639) 2)) 2)) (forall ((|aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77| Int) (|aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| Int) (|aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| Int)) (let ((.cse17 (* 2 |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|))) (let ((.cse14 (+ .cse17 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|)) (.cse13 (* 2 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|)) (.cse18 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165|)) (.cse15 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401|)) (.cse22 (* 4 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse20 (* 2 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|)) (.cse21 (* 4 |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|)) (.cse19 (* 5 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423|)) (.cse16 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|))) (or (<= (+ 2 .cse13) .cse14) (<= 2 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|) (<= 2147483636 (+ .cse15 .cse16 |c_ULTIMATE.start_main_~sum~0#1| |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|)) (<= (+ |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| 1) |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165|) (< |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 0) (<= (+ .cse15 .cse16 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483630) (<= (+ .cse17 (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) 2147483646) (- 2)) 9 |c_ULTIMATE.start_main_#t~post4#1| |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|) 0) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|) (< .cse14 .cse13) (<= (+ 5 .cse18) .cse19) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401| 1)) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| (+ |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 1)) (<= |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165| (+ (div (+ (* |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 2) (* |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| (- 2)) (* |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 4) 4) 4) 1)) (<= (+ .cse20 .cse21 2147483649) (+ .cse18 .cse15 |c_ULTIMATE.start_main_~sum~0#1| .cse22)) (<= (+ .cse19 .cse15 |c_ULTIMATE.start_main_~sum~0#1| .cse22) (+ .cse20 .cse21 2147483639)) (<= (+ .cse20 .cse21 14 |c_ULTIMATE.start_main_#t~post4#1|) (+ .cse19 .cse16)))))))) is different from false [2021-11-25 18:34:33,624 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_#t~post4#1| 1)) (.cse1 (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)))) (and (<= .cse0 (div (+ (div (+ .cse1 2147483639) 2) 1) 2)) (forall ((|aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77| Int) (|aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72| Int) (|aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| Int)) (let ((.cse2 (* 2 |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|))) (let ((.cse4 (+ .cse2 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|)) (.cse3 (* 2 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|)) (.cse7 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse12 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165|)) (.cse5 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72|)) (.cse8 (* 5 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423|)) (.cse6 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401|)) (.cse9 (* 4 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse10 (* 2 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|)) (.cse11 (* 4 |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|))) (or (<= (+ .cse2 |c_ULTIMATE.start_main_#t~post4#1| |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| |aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72| 10) 0) (<= (+ 2 .cse3) .cse4) (<= 0 (+ .cse5 .cse6 9 .cse7 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|)) (<= (+ |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| |c_ULTIMATE.start_main_#t~post4#1| 1) (div (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401| (- 5)) (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) 2147483630) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) (+ 2147483643 .cse5)) (<= 2 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|) (<= (+ .cse8 .cse6 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1| .cse9) (+ .cse10 .cse11 2147483638)) (<= (+ |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| 1) |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165|) (< |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 0) (< .cse4 .cse3) (<= (+ .cse5 .cse6 .cse7 |c_ULTIMATE.start_main_#t~post4#1| 17) 0) (<= (+ 5 .cse12) .cse8) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401| 1)) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| (+ |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 1)) (<= |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165| (+ (div (+ (* |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 2) (* |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| (- 2)) (* |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 4) 4) 4) 1)) (<= (+ .cse10 .cse11 |c_ULTIMATE.start_main_#t~post4#1| 15) (+ .cse8 .cse7)) (<= (+ .cse10 .cse11 4) (+ .cse5 .cse12 .cse6 .cse9)) (<= (+ .cse5 .cse8 7 .cse6 .cse9) (+ .cse10 .cse11)) (<= (+ 2 |c_ULTIMATE.start_main_#t~post4#1|) |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|))))) (forall ((|aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77| Int) (|aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| Int) (|aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| Int) (|aux_div_v_ULTIMATE.start_main_~i~0#1_50_305| Int)) (let ((.cse17 (* 2 |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|))) (let ((.cse14 (+ .cse17 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|)) (.cse13 (* 2 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|)) (.cse20 (* 5 |aux_div_v_ULTIMATE.start_main_~i~0#1_50_305|)) (.cse18 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165|)) (.cse15 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401|)) (.cse23 (* 4 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse21 (* 2 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|)) (.cse22 (* 4 |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|)) (.cse19 (* 5 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423|)) (.cse16 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|))) (or (<= (+ 2 .cse13) .cse14) (<= 2 |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|) (<= 2147483636 (+ .cse15 .cse16 |c_ULTIMATE.start_main_~sum~0#1| |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|)) (< |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 0) (<= (+ .cse15 .cse16 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483630) (<= (+ .cse17 (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) 2147483646) (- 2)) 9 |c_ULTIMATE.start_main_#t~post4#1| |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159|) 0) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77|) (< .cse14 .cse13) (<= (+ 5 .cse18) .cse19) (<= (+ .cse19 5) .cse20) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423| (+ |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 1)) (<= |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| 0) (<= |aux_div_v_ULTIMATE.start_main_~i~0#1_50_305| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401| 1)) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_305_401_423_165| (+ (div (+ (* |aux_mod_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 2) (* |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| (- 2)) (* |aux_div_aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0#1_62_129_240_77_159| 4) 4) 4) 1)) (<= (+ 5 .cse20) .cse18) (<= (+ .cse21 .cse22 2147483649) (+ .cse18 .cse15 |c_ULTIMATE.start_main_~sum~0#1| .cse23)) (<= (+ .cse19 .cse15 |c_ULTIMATE.start_main_~sum~0#1| .cse23) (+ .cse21 .cse22 2147483639)) (<= (+ .cse21 .cse22 14 |c_ULTIMATE.start_main_#t~post4#1|) (+ .cse19 .cse16)))))) (<= |c_ULTIMATE.start_main_#t~post4#1| (div (+ .cse1 2147483641 (* |c_ULTIMATE.start_main_#t~post4#1| (- 1))) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483646) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| Int)) (or (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) (<= (div (+ (* |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| 5) |c_ULTIMATE.start_main_~sum~0#1| (- 2147483637)) (- 2)) 0) (<= (+ (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) 1) (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483634) 2)))) (<= .cse0 (div (+ .cse1 2147483646) 2)))) is different from false [2021-11-25 18:34:42,675 WARN L227 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 124 DAG size of output: 114 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:35:39,790 WARN L227 SmtUtils]: Spent 16.26s on a formula simplification. DAG size of input: 106 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:36:32,273 WARN L227 SmtUtils]: Spent 11.40s on a formula simplification. DAG size of input: 115 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:36:39,166 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_#t~post4#1| 1)) (.cse1 (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)))) (and (<= .cse0 (div (+ (div (+ .cse1 2147483639) 2) 1) 2)) (<= |c_ULTIMATE.start_main_#t~post4#1| (div (+ .cse1 2147483641 (* |c_ULTIMATE.start_main_#t~post4#1| (- 1))) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483646) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| Int)) (or (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) (<= (div (+ (* |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| 5) |c_ULTIMATE.start_main_~sum~0#1| (- 2147483637)) (- 2)) 0) (<= (+ (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) 1) (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483634) 2)))) (<= .cse0 (div (+ .cse1 2147483646) 2)))) is different from false [2021-11-25 18:36:40,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:36:40,017 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-11-25 18:36:40,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 18:36:40,018 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 48 states have internal predecessors, (115), 0 states have call successors, (0), 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 39 [2021-11-25 18:36:40,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:36:40,019 INFO L225 Difference]: With dead ends: 81 [2021-11-25 18:36:40,020 INFO L226 Difference]: Without dead ends: 80 [2021-11-25 18:36:40,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 204.2s TimeCoverageRelationStatistics Valid=876, Invalid=5552, Unknown=64, NotChecked=480, Total=6972 [2021-11-25 18:36:40,025 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:36:40,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 2 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 662 Invalid, 0 Unknown, 197 Unchecked, 0.4s Time] [2021-11-25 18:36:40,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-25 18:36:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-25 18:36:40,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:40,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-11-25 18:36:40,038 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 39 [2021-11-25 18:36:40,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:36:40,039 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-11-25 18:36:40,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 48 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:36:40,039 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-11-25 18:36:40,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 18:36:40,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:36:40,043 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1] [2021-11-25 18:36:40,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:36:40,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:36:40,269 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:36:40,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:36:40,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1923662644, now seen corresponding path program 4 times [2021-11-25 18:36:40,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:36:40,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991742756] [2021-11-25 18:36:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:36:40,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:36:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:36:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:36:41,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:36:41,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991742756] [2021-11-25 18:36:41,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991742756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:36:41,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652542733] [2021-11-25 18:36:41,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:36:41,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:36:41,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:36:41,219 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:36:41,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1343e118-10c7-46a9-8570-60be4f2e2c6b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:36:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:36:41,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 18:36:41,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:36:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:36:43,182 INFO L328 TraceCheckSpWp]: Computing backward predicates...