./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/gcd02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/gcd02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ba31a8852254650e4ff6b6614669c496c01110f .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 14:44:06,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:44:06,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:44:06,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:44:06,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:44:06,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:44:06,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:44:06,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:44:06,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:44:06,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:44:06,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:44:06,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:44:06,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:44:06,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:44:06,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:44:06,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:44:06,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:44:06,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:44:06,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:44:06,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:44:06,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:44:06,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:44:06,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:44:06,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:44:06,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:44:06,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:44:06,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:44:06,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:44:06,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:44:06,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:44:06,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:44:06,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:44:06,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:44:06,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:44:06,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:44:06,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:44:06,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:44:06,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:44:06,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:44:06,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:44:06,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:44:06,162 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-12-07 14:44:06,173 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:44:06,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:44:06,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:44:06,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:44:06,175 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:44:06,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:44:06,175 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:44:06,175 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 14:44:06,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:44:06,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:44:06,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:44:06,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:44:06,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:44:06,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:44:06,177 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 14:44:06,177 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:44:06,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:44:06,177 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:44:06,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:44:06,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:44:06,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:44:06,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:44:06,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:44:06,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:44:06,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:44:06,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:44:06,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:44:06,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:44:06,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:44:06,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:44:06,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:44:06,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer 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 -> Automizer 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 -> 4ba31a8852254650e4ff6b6614669c496c01110f [2019-12-07 14:44:06,288 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:44:06,296 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:44:06,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:44:06,300 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:44:06,300 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:44:06,301 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/../../sv-benchmarks/c/recursive/gcd02.c [2019-12-07 14:44:06,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/data/d242f8b16/2047544aa8c74d709e36140356526fcc/FLAG9f67744e4 [2019-12-07 14:44:06,806 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:44:06,807 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/sv-benchmarks/c/recursive/gcd02.c [2019-12-07 14:44:06,811 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/data/d242f8b16/2047544aa8c74d709e36140356526fcc/FLAG9f67744e4 [2019-12-07 14:44:06,821 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/data/d242f8b16/2047544aa8c74d709e36140356526fcc [2019-12-07 14:44:06,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:44:06,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:44:06,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:44:06,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:44:06,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:44:06,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:44:06" (1/1) ... [2019-12-07 14:44:06,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663cfab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:06, skipping insertion in model container [2019-12-07 14:44:06,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:44:06" (1/1) ... [2019-12-07 14:44:06,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:44:06,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:44:06,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:44:06,958 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:44:07,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:44:07,018 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:44:07,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07 WrapperNode [2019-12-07 14:44:07,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:44:07,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:44:07,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:44:07,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:44:07,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07" (1/1) ... [2019-12-07 14:44:07,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07" (1/1) ... [2019-12-07 14:44:07,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:44:07,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:44:07,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:44:07,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:44:07,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07" (1/1) ... [2019-12-07 14:44:07,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07" (1/1) ... [2019-12-07 14:44:07,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07" (1/1) ... [2019-12-07 14:44:07,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07" (1/1) ... [2019-12-07 14:44:07,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07" (1/1) ... [2019-12-07 14:44:07,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07" (1/1) ... [2019-12-07 14:44:07,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07" (1/1) ... [2019-12-07 14:44:07,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:44:07,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:44:07,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:44:07,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:44:07,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/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 [2019-12-07 14:44:07,098 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2019-12-07 14:44:07,098 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2019-12-07 14:44:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2019-12-07 14:44:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2019-12-07 14:44:07,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:44:07,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:44:07,234 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:44:07,234 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 14:44:07,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:44:07 BoogieIcfgContainer [2019-12-07 14:44:07,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:44:07,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:44:07,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:44:07,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:44:07,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:44:06" (1/3) ... [2019-12-07 14:44:07,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a06a343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:44:07, skipping insertion in model container [2019-12-07 14:44:07,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:44:07" (2/3) ... [2019-12-07 14:44:07,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a06a343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:44:07, skipping insertion in model container [2019-12-07 14:44:07,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:44:07" (3/3) ... [2019-12-07 14:44:07,240 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd02.c [2019-12-07 14:44:07,246 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:44:07,250 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 14:44:07,257 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 14:44:07,271 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:44:07,271 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:44:07,272 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:44:07,272 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:44:07,272 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:44:07,272 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:44:07,272 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:44:07,272 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:44:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2019-12-07 14:44:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:44:07,288 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:07,288 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:07,288 INFO L410 AbstractCegarLoop]: === Iteration 1 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:44:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:07,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1549577429, now seen corresponding path program 1 times [2019-12-07 14:44:07,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:44:07,299 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453136970] [2019-12-07 14:44:07,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:44:07,423 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453136970] [2019-12-07 14:44:07,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:44:07,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 14:44:07,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405797182] [2019-12-07 14:44:07,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 14:44:07,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:44:07,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:44:07,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:44:07,438 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2019-12-07 14:44:07,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:07,530 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2019-12-07 14:44:07,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:44:07,532 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 14:44:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:07,538 INFO L225 Difference]: With dead ends: 82 [2019-12-07 14:44:07,538 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 14:44:07,541 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 14:44:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 14:44:07,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-07 14:44:07,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 14:44:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-12-07 14:44:07,569 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 10 [2019-12-07 14:44:07,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:07,569 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-12-07 14:44:07,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 14:44:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-12-07 14:44:07,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:44:07,570 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:07,570 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:07,570 INFO L410 AbstractCegarLoop]: === Iteration 2 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:44:07,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:07,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1549577653, now seen corresponding path program 1 times [2019-12-07 14:44:07,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:44:07,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172103748] [2019-12-07 14:44:07,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:44:07,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172103748] [2019-12-07 14:44:07,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:44:07,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 14:44:07,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920645373] [2019-12-07 14:44:07,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 14:44:07,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:44:07,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 14:44:07,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:44:07,610 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2019-12-07 14:44:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:07,665 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-12-07 14:44:07,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:44:07,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 14:44:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:07,666 INFO L225 Difference]: With dead ends: 31 [2019-12-07 14:44:07,666 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 14:44:07,667 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 14:44:07,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 14:44:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 14:44:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 14:44:07,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-12-07 14:44:07,671 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 10 [2019-12-07 14:44:07,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:07,672 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-12-07 14:44:07,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 14:44:07,672 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-12-07 14:44:07,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 14:44:07,672 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:07,673 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:07,673 INFO L410 AbstractCegarLoop]: === Iteration 3 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:44:07,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:07,673 INFO L82 PathProgramCache]: Analyzing trace with hash -670047346, now seen corresponding path program 1 times [2019-12-07 14:44:07,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:44:07,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147156971] [2019-12-07 14:44:07,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:07,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:44:07,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147156971] [2019-12-07 14:44:07,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:44:07,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 14:44:07,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953292878] [2019-12-07 14:44:07,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 14:44:07,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:44:07,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 14:44:07,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 14:44:07,727 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 8 states. [2019-12-07 14:44:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:07,822 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2019-12-07 14:44:07,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 14:44:07,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-12-07 14:44:07,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:07,824 INFO L225 Difference]: With dead ends: 41 [2019-12-07 14:44:07,825 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 14:44:07,825 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-12-07 14:44:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 14:44:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2019-12-07 14:44:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 14:44:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2019-12-07 14:44:07,835 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 16 [2019-12-07 14:44:07,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:07,835 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2019-12-07 14:44:07,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 14:44:07,835 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2019-12-07 14:44:07,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 14:44:07,836 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:07,836 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:07,837 INFO L410 AbstractCegarLoop]: === Iteration 4 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:44:07,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:07,837 INFO L82 PathProgramCache]: Analyzing trace with hash 703368796, now seen corresponding path program 1 times [2019-12-07 14:44:07,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:44:07,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66499320] [2019-12-07 14:44:07,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:44:07,860 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66499320] [2019-12-07 14:44:07,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:44:07,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:44:07,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092052376] [2019-12-07 14:44:07,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:44:07,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:44:07,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:44:07,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:44:07,861 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 3 states. [2019-12-07 14:44:07,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:07,868 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2019-12-07 14:44:07,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:44:07,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-07 14:44:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:07,869 INFO L225 Difference]: With dead ends: 37 [2019-12-07 14:44:07,870 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 14:44:07,870 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:44:07,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 14:44:07,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 14:44:07,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 14:44:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2019-12-07 14:44:07,875 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 17 [2019-12-07 14:44:07,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:07,875 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2019-12-07 14:44:07,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:44:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2019-12-07 14:44:07,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 14:44:07,876 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:07,876 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:07,876 INFO L410 AbstractCegarLoop]: === Iteration 5 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:44:07,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:07,877 INFO L82 PathProgramCache]: Analyzing trace with hash 481959190, now seen corresponding path program 1 times [2019-12-07 14:44:07,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:44:07,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162631022] [2019-12-07 14:44:07,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:44:07,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162631022] [2019-12-07 14:44:07,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287547549] [2019-12-07 14:44:07,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/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 [2019-12-07 14:44:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:07,989 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 14:44:07,994 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:44:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:44:08,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 14:44:08,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2019-12-07 14:44:08,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404920697] [2019-12-07 14:44:08,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 14:44:08,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:44:08,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 14:44:08,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2019-12-07 14:44:08,127 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 11 states. [2019-12-07 14:44:08,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:08,242 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-12-07 14:44:08,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 14:44:08,243 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2019-12-07 14:44:08,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:08,243 INFO L225 Difference]: With dead ends: 45 [2019-12-07 14:44:08,243 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 14:44:08,244 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2019-12-07 14:44:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 14:44:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 14:44:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 14:44:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-12-07 14:44:08,248 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 22 [2019-12-07 14:44:08,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:08,248 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-12-07 14:44:08,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 14:44:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-07 14:44:08,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 14:44:08,249 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:08,249 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:08,450 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:44:08,451 INFO L410 AbstractCegarLoop]: === Iteration 6 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:44:08,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:08,452 INFO L82 PathProgramCache]: Analyzing trace with hash 817476587, now seen corresponding path program 1 times [2019-12-07 14:44:08,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:44:08,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419485292] [2019-12-07 14:44:08,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 14:44:08,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419485292] [2019-12-07 14:44:08,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:44:08,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-12-07 14:44:08,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762793743] [2019-12-07 14:44:08,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 14:44:08,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:44:08,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 14:44:08,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-12-07 14:44:08,581 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 9 states. [2019-12-07 14:44:08,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:08,690 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2019-12-07 14:44:08,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 14:44:08,690 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2019-12-07 14:44:08,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:08,691 INFO L225 Difference]: With dead ends: 42 [2019-12-07 14:44:08,691 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 14:44:08,691 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-12-07 14:44:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 14:44:08,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-12-07 14:44:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 14:44:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2019-12-07 14:44:08,696 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 26 [2019-12-07 14:44:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:08,697 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-12-07 14:44:08,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 14:44:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2019-12-07 14:44:08,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 14:44:08,698 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:08,698 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:08,698 INFO L410 AbstractCegarLoop]: === Iteration 7 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:44:08,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:08,699 INFO L82 PathProgramCache]: Analyzing trace with hash -957242837, now seen corresponding path program 1 times [2019-12-07 14:44:08,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:44:08,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905812287] [2019-12-07 14:44:08,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 14:44:08,798 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905812287] [2019-12-07 14:44:08,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571516746] [2019-12-07 14:44:08,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/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 [2019-12-07 14:44:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:08,825 INFO L264 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 14:44:08,827 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:44:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 14:44:08,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 14:44:08,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2019-12-07 14:44:08,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000783415] [2019-12-07 14:44:08,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 14:44:08,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:44:08,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 14:44:08,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2019-12-07 14:44:08,911 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 10 states. [2019-12-07 14:44:09,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:09,002 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2019-12-07 14:44:09,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 14:44:09,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2019-12-07 14:44:09,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:09,003 INFO L225 Difference]: With dead ends: 51 [2019-12-07 14:44:09,003 INFO L226 Difference]: Without dead ends: 42 [2019-12-07 14:44:09,003 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2019-12-07 14:44:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-12-07 14:44:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-12-07 14:44:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-12-07 14:44:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2019-12-07 14:44:09,008 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 26 [2019-12-07 14:44:09,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:09,008 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2019-12-07 14:44:09,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 14:44:09,008 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2019-12-07 14:44:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 14:44:09,009 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:09,009 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:09,210 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:44:09,211 INFO L410 AbstractCegarLoop]: === Iteration 8 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:44:09,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:09,212 INFO L82 PathProgramCache]: Analyzing trace with hash -630492237, now seen corresponding path program 1 times [2019-12-07 14:44:09,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:44:09,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288284090] [2019-12-07 14:44:09,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 14:44:09,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288284090] [2019-12-07 14:44:09,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145545473] [2019-12-07 14:44:09,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/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 [2019-12-07 14:44:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:09,361 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 14:44:09,363 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:44:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 14:44:09,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 14:44:09,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 21 [2019-12-07 14:44:09,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796181823] [2019-12-07 14:44:09,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 14:44:09,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:44:09,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 14:44:09,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2019-12-07 14:44:09,487 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 12 states. [2019-12-07 14:44:09,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:09,615 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2019-12-07 14:44:09,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 14:44:09,615 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2019-12-07 14:44:09,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:09,616 INFO L225 Difference]: With dead ends: 51 [2019-12-07 14:44:09,616 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 14:44:09,617 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2019-12-07 14:44:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 14:44:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 14:44:09,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 14:44:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-12-07 14:44:09,621 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 32 [2019-12-07 14:44:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:09,621 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-12-07 14:44:09,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 14:44:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-12-07 14:44:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-07 14:44:09,622 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:44:09,622 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:44:09,822 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:44:09,823 INFO L410 AbstractCegarLoop]: === Iteration 9 === [dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:44:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:44:09,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1826368274, now seen corresponding path program 1 times [2019-12-07 14:44:09,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:44:09,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935115440] [2019-12-07 14:44:09,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:44:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 14:44:09,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935115440] [2019-12-07 14:44:09,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095759250] [2019-12-07 14:44:09,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/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 [2019-12-07 14:44:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:44:10,006 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 15 conjunts are in the unsatisfiable core [2019-12-07 14:44:10,008 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:44:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-12-07 14:44:10,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 14:44:10,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 21 [2019-12-07 14:44:10,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52847062] [2019-12-07 14:44:10,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 14:44:10,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:44:10,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 14:44:10,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2019-12-07 14:44:10,162 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 11 states. [2019-12-07 14:44:10,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:44:10,256 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-12-07 14:44:10,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 14:44:10,257 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2019-12-07 14:44:10,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:44:10,257 INFO L225 Difference]: With dead ends: 36 [2019-12-07 14:44:10,257 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 14:44:10,258 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2019-12-07 14:44:10,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 14:44:10,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 14:44:10,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 14:44:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:44:10,259 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2019-12-07 14:44:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:44:10,259 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:44:10,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 14:44:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:44:10,259 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 14:44:10,460 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:44:10,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 14:44:10,603 INFO L246 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2019-12-07 14:44:10,603 INFO L246 CegarLoopResult]: For program point dividesFINAL(lines 30 38) no Hoare annotation was computed. [2019-12-07 14:44:10,603 INFO L246 CegarLoopResult]: For program point dividesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2019-12-07 14:44:10,603 INFO L246 CegarLoopResult]: For program point dividesEXIT(lines 30 38) no Hoare annotation was computed. [2019-12-07 14:44:10,603 INFO L246 CegarLoopResult]: For program point dividesErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2019-12-07 14:44:10,603 INFO L246 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2019-12-07 14:44:10,603 INFO L246 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2019-12-07 14:44:10,604 INFO L249 CegarLoopResult]: At program point dividesENTRY(lines 30 38) the Hoare annotation is: true [2019-12-07 14:44:10,604 INFO L242 CegarLoopResult]: At program point L37-2(line 37) the Hoare annotation is: (let ((.cse0 (not (<= 1 |divides_#in~n|)))) (and (or (and (<= divides_~m 2147483647) (<= divides_~n divides_~m) (<= 1 divides_~n)) .cse0 (not (<= |divides_#in~m| 2147483647))) (or (not (<= |divides_#in~m| 2147483646)) .cse0 (<= divides_~m 2147483646)))) [2019-12-07 14:44:10,604 INFO L246 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2019-12-07 14:44:10,604 INFO L246 CegarLoopResult]: For program point L37-3(line 37) no Hoare annotation was computed. [2019-12-07 14:44:10,604 INFO L246 CegarLoopResult]: For program point gcdEXIT(lines 15 27) no Hoare annotation was computed. [2019-12-07 14:44:10,604 INFO L246 CegarLoopResult]: For program point L23(lines 23 25) no Hoare annotation was computed. [2019-12-07 14:44:10,604 INFO L246 CegarLoopResult]: For program point gcdErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2019-12-07 14:44:10,604 INFO L246 CegarLoopResult]: For program point gcdErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-12-07 14:44:10,604 INFO L246 CegarLoopResult]: For program point gcdFINAL(lines 15 27) no Hoare annotation was computed. [2019-12-07 14:44:10,604 INFO L246 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2019-12-07 14:44:10,604 INFO L246 CegarLoopResult]: For program point gcdErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-12-07 14:44:10,604 INFO L246 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2019-12-07 14:44:10,604 INFO L246 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L242 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: (or (not (<= |gcd_#in~y1| 2147483647)) (and (<= gcd_~y2 2147483647) (< 0 gcd_~y1) (= gcd_~y1 |gcd_#in~y1|) (<= gcd_~y1 (+ gcd_~y2 2147483646))) (not (<= |gcd_#in~y2| 2147483647))) [2019-12-07 14:44:10,605 INFO L249 CegarLoopResult]: At program point gcdENTRY(lines 15 27) the Hoare annotation is: true [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point L26-3(line 26) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L242 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (or (not (<= |gcd_#in~y1| 2147483647)) (and (<= gcd_~y2 2147483647) (< 0 gcd_~y1) (= gcd_~y1 |gcd_#in~y1|) (<= gcd_~y1 (+ gcd_~y2 2147483646))) (not (<= |gcd_#in~y2| 2147483647))) [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point gcdErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point L16-2(lines 15 27) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L242 CegarLoopResult]: At program point L50(line 50) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 2147483647) (<= ULTIMATE.start_main_~m~0 2147483647)) [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point L50-1(line 50) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2019-12-07 14:44:10,605 INFO L246 CegarLoopResult]: For program point L42(lines 42 44) no Hoare annotation was computed. [2019-12-07 14:44:10,606 INFO L249 CegarLoopResult]: At program point L40(lines 40 57) the Hoare annotation is: true [2019-12-07 14:44:10,606 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 14:44:10,606 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 14:44:10,606 INFO L242 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~z~0) (<= ULTIMATE.start_main_~n~0 2147483647) (<= ULTIMATE.start_main_~m~0 2147483647)) [2019-12-07 14:44:10,606 INFO L246 CegarLoopResult]: For program point L51-1(line 51) no Hoare annotation was computed. [2019-12-07 14:44:10,606 INFO L246 CegarLoopResult]: For program point L49(lines 49 56) no Hoare annotation was computed. [2019-12-07 14:44:10,606 INFO L246 CegarLoopResult]: For program point L51-2(lines 51 55) no Hoare annotation was computed. [2019-12-07 14:44:10,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:44:10 BoogieIcfgContainer [2019-12-07 14:44:10,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:44:10,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:44:10,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:44:10,612 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:44:10,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:44:07" (3/4) ... [2019-12-07 14:44:10,615 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 14:44:10,619 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure divides [2019-12-07 14:44:10,620 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2019-12-07 14:44:10,623 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 14:44:10,623 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 14:44:10,655 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e4e6ee47-62f4-4334-98a9-fa76451816d1/bin/uautomizer/witness.graphml [2019-12-07 14:44:10,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:44:10,657 INFO L168 Benchmark]: Toolchain (without parser) took 3832.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -202.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:44:10,657 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:44:10,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -171.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:44:10,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:44:10,658 INFO L168 Benchmark]: Boogie Preprocessor took 14.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:44:10,658 INFO L168 Benchmark]: RCFGBuilder took 177.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:44:10,658 INFO L168 Benchmark]: TraceAbstraction took 3376.18 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 37.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -59.0 MB). Peak memory consumption was 245.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:44:10,659 INFO L168 Benchmark]: Witness Printer took 43.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:44:10,660 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 194.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -171.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 177.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3376.18 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 37.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -59.0 MB). Peak memory consumption was 245.6 MB. Max. memory is 11.5 GB. * Witness Printer took 43.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 43 locations, 6 error locations. Result: SAFE, OverallTime: 3.1s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 176 SDtfs, 209 SDslu, 689 SDs, 0 SdLazy, 1063 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, 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, 9 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 42 PreInvPairs, 52 NumberOfFragments, 100 HoareAnnotationTreeSize, 42 FomulaSimplifications, 91 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 311 NumberOfCodeBlocks, 311 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 298 ConstructedInterpolants, 0 QuantifiedInterpolants, 31292 SizeOfPredicates, 16 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 57/73 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...