./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/gcd_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI --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 9c20edfd7ede05443471560aa2c7be34d4e8c171 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:23,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:23,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:24,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:24,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:24,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:24,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:24,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:24,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:24,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:24,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:24,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:24,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:24,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:24,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:24,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:24,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:24,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:24,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:24,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:24,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:24,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:24,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:24,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:24,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:24,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:24,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:24,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:24,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:24,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:24,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:24,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:24,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:24,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:24,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:24,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:24,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:24,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:24,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:24,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:24,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:24,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-11 02:29:24,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:24,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:24,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:24,129 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:24,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:24,130 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:24,130 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:24,130 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:24,137 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:24,138 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:24,139 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:24,139 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:24,139 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:24,140 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:24,140 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:24,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:24,141 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:24,141 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:29:24,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:24,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:24,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:24,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:24,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:24,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:24,143 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:29:24,143 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:24,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:24,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:24,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:24,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:24,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:24,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:24,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:24,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:24,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:24,148 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:24,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:24,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:24,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:24,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:24,149 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_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c20edfd7ede05443471560aa2c7be34d4e8c171 [2021-10-11 02:29:24,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:24,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:24,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:24,534 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:24,535 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:24,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/bitvector/gcd_4.c [2021-10-11 02:29:24,632 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/data/6d1fdc94f/de6c009d1dad495bab9fdf140043b463/FLAGca3387c57 [2021-10-11 02:29:25,181 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:25,183 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/sv-benchmarks/c/bitvector/gcd_4.c [2021-10-11 02:29:25,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/data/6d1fdc94f/de6c009d1dad495bab9fdf140043b463/FLAGca3387c57 [2021-10-11 02:29:25,525 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/data/6d1fdc94f/de6c009d1dad495bab9fdf140043b463 [2021-10-11 02:29:25,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:25,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:25,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:25,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:25,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:25,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0b6a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25, skipping insertion in model container [2021-10-11 02:29:25,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:25,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:25,805 WARN L226 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_75e026f2-168d-49a6-a282-0506f3840ab2/sv-benchmarks/c/bitvector/gcd_4.c[357,370] [2021-10-11 02:29:25,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:25,850 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:25,865 WARN L226 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_75e026f2-168d-49a6-a282-0506f3840ab2/sv-benchmarks/c/bitvector/gcd_4.c[357,370] [2021-10-11 02:29:25,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:25,904 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:25,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25 WrapperNode [2021-10-11 02:29:25,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:25,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:25,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:25,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:25,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:25,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:25,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:25,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:25,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:26,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:26,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:26,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:26,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:26,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:26,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:26,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:26,722 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 02:29:26,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:26 BoogieIcfgContainer [2021-10-11 02:29:26,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:26,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:26,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:26,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:26,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:25" (1/3) ... [2021-10-11 02:29:26,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afabdca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:26, skipping insertion in model container [2021-10-11 02:29:26,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (2/3) ... [2021-10-11 02:29:26,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afabdca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:26, skipping insertion in model container [2021-10-11 02:29:26,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:26" (3/3) ... [2021-10-11 02:29:26,734 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4.c [2021-10-11 02:29:26,750 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:26,754 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-10-11 02:29:26,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-11 02:29:26,807 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:26,807 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:26,807 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:26,807 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:26,807 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:26,808 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:26,808 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:26,808 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-10-11 02:29:26,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:29:26,835 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:26,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:29:26,839 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:26,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:26,845 INFO L82 PathProgramCache]: Analyzing trace with hash 116442, now seen corresponding path program 1 times [2021-10-11 02:29:26,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:26,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719574691] [2021-10-11 02:29:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:27,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719574691] [2021-10-11 02:29:27,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:27,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:27,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756826608] [2021-10-11 02:29:27,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:27,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:27,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:27,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:27,127 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2021-10-11 02:29:27,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:27,249 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2021-10-11 02:29:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:27,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:29:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:27,269 INFO L225 Difference]: With dead ends: 54 [2021-10-11 02:29:27,270 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 02:29:27,272 INFO L677 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 [2021-10-11 02:29:27,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 02:29:27,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2021-10-11 02:29:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:29:27,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-11 02:29:27,303 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 3 [2021-10-11 02:29:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:27,303 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-11 02:29:27,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-11 02:29:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:29:27,304 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:27,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:29:27,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:27,305 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:27,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:27,305 INFO L82 PathProgramCache]: Analyzing trace with hash 3615763, now seen corresponding path program 1 times [2021-10-11 02:29:27,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:27,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653449492] [2021-10-11 02:29:27,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:27,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653449492] [2021-10-11 02:29:27,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:27,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:27,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541051654] [2021-10-11 02:29:27,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:27,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:27,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:27,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:27,342 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2021-10-11 02:29:27,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:27,491 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-10-11 02:29:27,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:27,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:29:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:27,492 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:29:27,493 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 02:29:27,493 INFO L677 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 [2021-10-11 02:29:27,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 02:29:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2021-10-11 02:29:27,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:29:27,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-11 02:29:27,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2021-10-11 02:29:27,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:27,497 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-11 02:29:27,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-11 02:29:27,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:29:27,498 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:27,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:27,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:29:27,498 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:27,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:27,499 INFO L82 PathProgramCache]: Analyzing trace with hash 348917805, now seen corresponding path program 1 times [2021-10-11 02:29:27,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:27,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941397938] [2021-10-11 02:29:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:27,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941397938] [2021-10-11 02:29:27,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:27,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:29:27,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414792808] [2021-10-11 02:29:27,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:27,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:27,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:27,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:27,546 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 3 states. [2021-10-11 02:29:27,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:27,622 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-10-11 02:29:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:27,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 02:29:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:27,625 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:29:27,626 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:29:27,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:27,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:29:27,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 02:29:27,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:29:27,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-11 02:29:27,633 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 7 [2021-10-11 02:29:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:27,633 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-11 02:29:27,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-11 02:29:27,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:29:27,634 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:27,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:27,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:29:27,635 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:27,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:27,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1293917912, now seen corresponding path program 1 times [2021-10-11 02:29:27,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:27,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852870521] [2021-10-11 02:29:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:27,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852870521] [2021-10-11 02:29:27,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993347274] [2021-10-11 02:29:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:27,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:29:27,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:28,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:28,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:28,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:29:28,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 6 [2021-10-11 02:29:28,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191555086] [2021-10-11 02:29:28,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:28,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:28,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:28,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:29:28,071 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2021-10-11 02:29:28,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:28,128 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-10-11 02:29:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:28,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:29:28,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:28,130 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:29:28,130 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:29:28,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:29:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:29:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-10-11 02:29:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 02:29:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-11 02:29:28,135 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 11 [2021-10-11 02:29:28,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:28,136 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-11 02:29:28,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:28,136 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-11 02:29:28,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:29:28,136 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:28,137 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:28,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:28,357 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:28,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:28,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1293917720, now seen corresponding path program 1 times [2021-10-11 02:29:28,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:28,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460766278] [2021-10-11 02:29:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:28,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460766278] [2021-10-11 02:29:28,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35845601] [2021-10-11 02:29:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:28,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:29:28,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:28,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:28,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:28,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [547333524] [2021-10-11 02:29:28,658 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-11 02:29:28,658 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:28,664 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:29:28,669 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:29:28,669 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:29:29,252 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:29,455 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2021-10-11 02:29:29,666 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-10-11 02:29:29,890 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-10-11 02:29:30,119 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-10-11 02:29:30,357 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2021-10-11 02:29:30,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:30,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:29:30,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2021-10-11 02:29:30,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480604341] [2021-10-11 02:29:30,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:29:30,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:30,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:29:30,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:29:30,366 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2021-10-11 02:29:30,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:30,501 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2021-10-11 02:29:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:29:30,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2021-10-11 02:29:30,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:30,514 INFO L225 Difference]: With dead ends: 48 [2021-10-11 02:29:30,514 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 02:29:30,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:29:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 02:29:30,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2021-10-11 02:29:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:29:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-10-11 02:29:30,528 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2021-10-11 02:29:30,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:30,528 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-10-11 02:29:30,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:29:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-10-11 02:29:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:29:30,529 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:30,529 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:30,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:30,730 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:30,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:30,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1299235432, now seen corresponding path program 1 times [2021-10-11 02:29:30,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:30,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326150651] [2021-10-11 02:29:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:30,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326150651] [2021-10-11 02:29:30,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161403762] [2021-10-11 02:29:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:30,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-11 02:29:30,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:30,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:31,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1694808167] [2021-10-11 02:29:31,070 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-11 02:29:31,070 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:31,072 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:29:31,072 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:29:31,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:29:31,680 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:31,834 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-10-11 02:29:32,023 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-10-11 02:29:32,208 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2021-10-11 02:29:32,355 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2021-10-11 02:29:32,529 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-10-11 02:29:32,718 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-10-11 02:29:32,883 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-10-11 02:29:33,064 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-10-11 02:29:33,065 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:33,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:29:33,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-10-11 02:29:33,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209063625] [2021-10-11 02:29:33,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:29:33,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:33,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:29:33,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:29:33,068 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 11 states. [2021-10-11 02:29:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:33,148 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-10-11 02:29:33,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:29:33,149 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2021-10-11 02:29:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:33,150 INFO L225 Difference]: With dead ends: 45 [2021-10-11 02:29:33,151 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:29:33,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:29:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:29:33,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 02:29:33,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:29:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-10-11 02:29:33,166 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 19 [2021-10-11 02:29:33,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:33,166 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-10-11 02:29:33,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:29:33,167 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-10-11 02:29:33,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:29:33,168 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:33,168 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:33,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-11 02:29:33,377 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:33,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1802595367, now seen corresponding path program 2 times [2021-10-11 02:29:33,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:33,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494287077] [2021-10-11 02:29:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:33,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494287077] [2021-10-11 02:29:33,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620866909] [2021-10-11 02:29:33,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:33,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:29:33,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:29:33,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:29:33,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-11 02:29:33,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-11 02:29:33,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:29:33,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 11 [2021-10-11 02:29:33,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748174428] [2021-10-11 02:29:33,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:29:33,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:33,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:29:33,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:29:33,696 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2021-10-11 02:29:33,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:33,748 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-10-11 02:29:33,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:33,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-10-11 02:29:33,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:33,754 INFO L225 Difference]: With dead ends: 34 [2021-10-11 02:29:33,754 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:29:33,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:29:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:29:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2021-10-11 02:29:33,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:29:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-10-11 02:29:33,765 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 23 [2021-10-11 02:29:33,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:33,765 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-11 02:29:33,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:29:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-10-11 02:29:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 02:29:33,771 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:33,771 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:33,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:33,993 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:33,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1625100781, now seen corresponding path program 2 times [2021-10-11 02:29:33,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:33,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868823477] [2021-10-11 02:29:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-11 02:29:34,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868823477] [2021-10-11 02:29:34,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423304622] [2021-10-11 02:29:34,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:34,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:29:34,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:29:34,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:29:34,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-11 02:29:34,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-11 02:29:34,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [574565223] [2021-10-11 02:29:34,201 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-11 02:29:34,204 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:34,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:29:34,205 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:29:34,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:29:34,696 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:34,883 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-10-11 02:29:35,098 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-10-11 02:29:35,390 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2021-10-11 02:29:35,551 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-10-11 02:29:35,714 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-10-11 02:29:35,903 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-10-11 02:29:36,087 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-10-11 02:29:36,088 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:36,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:29:36,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2021-10-11 02:29:36,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582033925] [2021-10-11 02:29:36,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:29:36,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:36,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:29:36,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:29:36,099 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 11 states. [2021-10-11 02:29:36,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:36,432 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2021-10-11 02:29:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-11 02:29:36,433 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2021-10-11 02:29:36,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:36,434 INFO L225 Difference]: With dead ends: 55 [2021-10-11 02:29:36,434 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:29:36,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2021-10-11 02:29:36,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:29:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2021-10-11 02:29:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-10-11 02:29:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2021-10-11 02:29:36,441 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 23 [2021-10-11 02:29:36,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:36,442 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2021-10-11 02:29:36,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:29:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2021-10-11 02:29:36,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 02:29:36,443 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:36,444 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-11 02:29:36,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-10-11 02:29:36,664 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:36,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:36,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1549640323, now seen corresponding path program 3 times [2021-10-11 02:29:36,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:36,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27769931] [2021-10-11 02:29:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:36,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27769931] [2021-10-11 02:29:36,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286209364] [2021-10-11 02:29:36,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:36,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 02:29:36,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:29:36,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:29:36,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:37,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 56 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:42,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1521010012] [2021-10-11 02:29:42,016 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-11 02:29:42,016 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:42,017 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:29:42,017 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:29:42,017 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:29:42,529 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:42,736 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-10-11 02:29:42,966 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-10-11 02:29:43,234 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2021-10-11 02:29:43,425 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2021-10-11 02:29:43,643 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-10-11 02:29:43,861 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-10-11 02:29:44,018 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-10-11 02:29:44,186 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-10-11 02:29:44,189 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:44,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:29:44,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2021-10-11 02:29:44,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947885050] [2021-10-11 02:29:44,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-10-11 02:29:44,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:44,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-11 02:29:44,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=774, Unknown=2, NotChecked=0, Total=992 [2021-10-11 02:29:44,192 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 24 states. [2021-10-11 02:29:51,044 WARN L197 SmtUtils]: Spent 6.05 s on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2021-10-11 02:30:03,187 WARN L197 SmtUtils]: Spent 10.07 s on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2021-10-11 02:30:03,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:03,672 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2021-10-11 02:30:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-11 02:30:03,673 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 31 [2021-10-11 02:30:03,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:03,675 INFO L225 Difference]: With dead ends: 115 [2021-10-11 02:30:03,675 INFO L226 Difference]: Without dead ends: 86 [2021-10-11 02:30:03,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=494, Invalid=1574, Unknown=2, NotChecked=0, Total=2070 [2021-10-11 02:30:03,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-11 02:30:03,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 65. [2021-10-11 02:30:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-10-11 02:30:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2021-10-11 02:30:03,691 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 31 [2021-10-11 02:30:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:03,692 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2021-10-11 02:30:03,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-10-11 02:30:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2021-10-11 02:30:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-11 02:30:03,694 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:03,694 INFO L422 BasicCegarLoop]: trace histogram [11, 8, 7, 7, 3, 3, 3, 1, 1, 1, 1, 1] [2021-10-11 02:30:03,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:03,899 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:03,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:03,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1951391849, now seen corresponding path program 4 times [2021-10-11 02:30:03,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:03,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70292989] [2021-10-11 02:30:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 8 proven. 155 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:30:04,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70292989] [2021-10-11 02:30:04,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863877643] [2021-10-11 02:30:04,172 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:04,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-11 02:30:04,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 93 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-11 02:30:04,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-11 02:30:04,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [223004288] [2021-10-11 02:30:04,730 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-11 02:30:04,730 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:30:04,731 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:30:04,731 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:30:04,731 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:30:05,107 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:30:05,342 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2021-10-11 02:30:05,593 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-10-11 02:30:05,843 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2021-10-11 02:30:06,017 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2021-10-11 02:30:06,176 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-10-11 02:30:06,349 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-10-11 02:30:06,506 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-10-11 02:30:06,680 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2021-10-11 02:30:06,682 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:30:06,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:30:06,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 24 [2021-10-11 02:30:06,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803840954] [2021-10-11 02:30:06,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-10-11 02:30:06,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:06,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-11 02:30:06,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2021-10-11 02:30:06,685 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 25 states. [2021-10-11 02:30:07,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:07,040 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2021-10-11 02:30:07,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:30:07,041 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 47 [2021-10-11 02:30:07,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:07,042 INFO L225 Difference]: With dead ends: 66 [2021-10-11 02:30:07,042 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:30:07,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2021-10-11 02:30:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:30:07,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:30:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:30:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:30:07,044 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-10-11 02:30:07,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:07,044 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:30:07,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-10-11 02:30:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:30:07,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:30:07,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:07,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:30:07,415 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 44 [2021-10-11 02:30:07,419 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-10-11 02:30:07,419 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-11 02:30:07,419 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-11 02:30:07,419 INFO L262 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-11 02:30:07,419 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-10-11 02:30:07,420 INFO L262 CegarLoopResult]: For program point L15-3(lines 13 29) no Hoare annotation was computed. [2021-10-11 02:30:07,420 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:30:07,420 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-11 02:30:07,420 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:30:07,420 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-11 02:30:07,420 INFO L265 CegarLoopResult]: At program point L28(lines 12 29) the Hoare annotation is: true [2021-10-11 02:30:07,421 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2021-10-11 02:30:07,421 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:30:07,421 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-11 02:30:07,421 INFO L262 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-11 02:30:07,422 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-11 02:30:07,422 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-10-11 02:30:07,422 INFO L262 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2021-10-11 02:30:07,422 INFO L258 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_gcd_test_~b 18)) (.cse0 (+ ULTIMATE.start_gcd_test_~b ULTIMATE.start_gcd_test_~a)) (.cse3 (<= (div (+ ULTIMATE.start_gcd_test_~a (- 63)) (- 3)) 18))) (or (and (<= .cse0 63) (<= 63 .cse0) .cse1) (and (= ULTIMATE.start_gcd_test_~a 63) .cse1) (let ((.cse2 (+ (* 2 ULTIMATE.start_gcd_test_~b) ULTIMATE.start_gcd_test_~a))) (and (<= 63 .cse2) (<= .cse2 63) .cse1)) (and (<= (+ ULTIMATE.start_gcd_test_~b (* 2 ULTIMATE.start_gcd_test_~a)) 18) .cse3 (<= ULTIMATE.start_gcd_test_~a (+ ULTIMATE.start_gcd_test_~b 9))) (let ((.cse4 (+ (* 3 ULTIMATE.start_gcd_test_~b) ULTIMATE.start_gcd_test_~a))) (and (<= .cse4 63) (<= 63 .cse4) .cse1)) (and (<= .cse0 18) (<= (* 6 ULTIMATE.start_gcd_test_~a) (+ (* 5 ULTIMATE.start_gcd_test_~b) 9)) .cse3))) [2021-10-11 02:30:07,422 INFO L262 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2021-10-11 02:30:07,422 INFO L262 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-10-11 02:30:07,423 INFO L262 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2021-10-11 02:30:07,423 INFO L262 CegarLoopResult]: For program point L14-4(lines 13 29) no Hoare annotation was computed. [2021-10-11 02:30:07,423 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-10-11 02:30:07,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:07 BoogieIcfgContainer [2021-10-11 02:30:07,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:07,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:07,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:07,447 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:07,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:26" (3/4) ... [2021-10-11 02:30:07,451 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:30:07,462 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:30:07,462 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:30:07,463 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:30:07,463 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:30:07,512 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e026f2-168d-49a6-a282-0506f3840ab2/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:30:07,512 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:07,513 INFO L168 Benchmark]: Toolchain (without parser) took 41983.83 ms. Allocated memory was 113.2 MB in the beginning and 182.5 MB in the end (delta: 69.2 MB). Free memory was 77.6 MB in the beginning and 142.8 MB in the end (delta: -65.2 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:07,514 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 87.0 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:07,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.19 ms. Allocated memory is still 113.2 MB. Free memory was 77.4 MB in the beginning and 88.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:07,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.04 ms. Allocated memory is still 113.2 MB. Free memory was 88.2 MB in the beginning and 86.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:07,515 INFO L168 Benchmark]: Boogie Preprocessor took 49.68 ms. Allocated memory is still 113.2 MB. Free memory was 86.7 MB in the beginning and 85.7 MB in the end (delta: 990.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:07,516 INFO L168 Benchmark]: RCFGBuilder took 710.87 ms. Allocated memory is still 113.2 MB. Free memory was 85.7 MB in the beginning and 63.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:07,516 INFO L168 Benchmark]: TraceAbstraction took 40719.11 ms. Allocated memory was 113.2 MB in the beginning and 182.5 MB in the end (delta: 69.2 MB). Free memory was 62.6 MB in the beginning and 144.9 MB in the end (delta: -82.3 MB). Peak memory consumption was 86.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:07,517 INFO L168 Benchmark]: Witness Printer took 65.19 ms. Allocated memory is still 182.5 MB. Free memory was 144.9 MB in the beginning and 142.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:07,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 87.0 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.19 ms. Allocated memory is still 113.2 MB. Free memory was 77.4 MB in the beginning and 88.2 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.04 ms. Allocated memory is still 113.2 MB. Free memory was 88.2 MB in the beginning and 86.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.68 ms. Allocated memory is still 113.2 MB. Free memory was 86.7 MB in the beginning and 85.7 MB in the end (delta: 990.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 710.87 ms. Allocated memory is still 113.2 MB. Free memory was 85.7 MB in the beginning and 63.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 40719.11 ms. Allocated memory was 113.2 MB in the beginning and 182.5 MB in the end (delta: 69.2 MB). Free memory was 62.6 MB in the beginning and 144.9 MB in the end (delta: -82.3 MB). Peak memory consumption was 86.1 MB. Max. memory is 16.1 GB. * Witness Printer took 65.19 ms. Allocated memory is still 182.5 MB. Free memory was 144.9 MB in the beginning and 142.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((((b + a <= 63 && 63 <= b + a) && b == 18) || (a == 63 && b == 18)) || ((63 <= 2 * b + a && 2 * b + a <= 63) && b == 18)) || ((b + 2 * a <= 18 && (a + -63) / -3 <= 18) && a <= b + 9)) || ((3 * b + a <= 63 && 63 <= 3 * b + a) && b == 18)) || ((b + a <= 18 && 6 * a <= 5 * b + 9) && (a + -63) / -3 <= 18) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40.4s, OverallIterations: 10, TraceHistogramMax: 11, AutomataDifference: 20.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 343 SDslu, 2 SDs, 0 SdLazy, 818 SolverSat, 151 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 517 GetRequests, 350 SyntacticMatches, 13 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 30.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 60 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 101 HoareAnnotationTreeSize, 2 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 204 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 344 NumberOfCodeBlocks, 320 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 485 ConstructedInterpolants, 15 QuantifiedInterpolants, 101119 SizeOfPredicates, 30 NumberOfNonLiveVariables, 481 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 24 InterpolantComputations, 5 PerfectInterpolantSequences, 445/921 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...