./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/MultCommutative-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/MultCommutative-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 64bit --witnessprinter.graph.data.programhash f536dfaa325c5623e8e0c5d03d4d9d96bd998e26 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:06:36,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:06:36,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:06:36,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:06:36,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:06:36,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:06:36,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:06:36,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:06:36,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:06:36,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:06:36,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:06:36,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:06:36,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:06:36,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:06:36,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:06:36,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:06:36,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:06:36,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:06:36,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:06:36,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:06:36,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:06:36,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:06:36,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:06:36,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:06:36,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:06:36,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:06:36,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:06:36,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:06:36,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:06:36,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:06:36,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:06:36,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:06:36,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:06:36,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:06:36,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:06:36,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:06:36,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:06:36,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:06:36,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:06:36,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:06:36,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:06:36,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-26 04:06:36,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:06:36,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:06:36,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:06:36,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:06:36,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:06:36,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:06:36,220 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:06:36,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:06:36,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:06:36,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 04:06:36,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 04:06:36,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 04:06:36,223 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-26 04:06:36,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:06:36,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:06:36,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 04:06:36,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:06:36,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:06:36,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 04:06:36,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 04:06:36,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 04:06:36,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:06:36,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 04:06:36,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 04:06:36,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:06:36,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 04:06:36,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 04:06:36,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:06:36,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f536dfaa325c5623e8e0c5d03d4d9d96bd998e26 [2020-10-26 04:06:36,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:06:36,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:06:36,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:06:36,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:06:36,738 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:06:36,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2020-10-26 04:06:36,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2b709db/f09c6d3186124b858ad534628c4030a3/FLAGe7b74fc86 [2020-10-26 04:06:37,501 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:06:37,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2020-10-26 04:06:37,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2b709db/f09c6d3186124b858ad534628c4030a3/FLAGe7b74fc86 [2020-10-26 04:06:37,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2b709db/f09c6d3186124b858ad534628c4030a3 [2020-10-26 04:06:37,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:06:37,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:06:37,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:06:37,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:06:37,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:06:37,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:06:37" (1/1) ... [2020-10-26 04:06:37,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24459019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:37, skipping insertion in model container [2020-10-26 04:06:37,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:06:37" (1/1) ... [2020-10-26 04:06:37,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:06:37,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:06:38,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:06:38,135 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:06:38,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:06:38,172 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:06:38,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38 WrapperNode [2020-10-26 04:06:38,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:06:38,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:06:38,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:06:38,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:06:38,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38" (1/1) ... [2020-10-26 04:06:38,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38" (1/1) ... [2020-10-26 04:06:38,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:06:38,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:06:38,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:06:38,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:06:38,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38" (1/1) ... [2020-10-26 04:06:38,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38" (1/1) ... [2020-10-26 04:06:38,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38" (1/1) ... [2020-10-26 04:06:38,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38" (1/1) ... [2020-10-26 04:06:38,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38" (1/1) ... [2020-10-26 04:06:38,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38" (1/1) ... [2020-10-26 04:06:38,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38" (1/1) ... [2020-10-26 04:06:38,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:06:38,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:06:38,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:06:38,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:06:38,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 04:06:38,324 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-10-26 04:06:38,324 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-10-26 04:06:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:06:38,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:06:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 04:06:38,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 04:06:38,707 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:06:38,707 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 04:06:38,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:06:38 BoogieIcfgContainer [2020-10-26 04:06:38,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:06:38,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 04:06:38,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 04:06:38,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 04:06:38,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 04:06:37" (1/3) ... [2020-10-26 04:06:38,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ed3813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:06:38, skipping insertion in model container [2020-10-26 04:06:38,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:06:38" (2/3) ... [2020-10-26 04:06:38,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ed3813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 04:06:38, skipping insertion in model container [2020-10-26 04:06:38,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:06:38" (3/3) ... [2020-10-26 04:06:38,734 INFO L111 eAbstractionObserver]: Analyzing ICFG MultCommutative-1.c [2020-10-26 04:06:38,751 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 04:06:38,757 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-26 04:06:38,774 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-26 04:06:38,829 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 04:06:38,830 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 04:06:38,830 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 04:06:38,830 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:06:38,831 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:06:38,831 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 04:06:38,831 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:06:38,831 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 04:06:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-26 04:06:38,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 04:06:38,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:38,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:06:38,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:38,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:38,876 INFO L82 PathProgramCache]: Analyzing trace with hash 617854126, now seen corresponding path program 1 times [2020-10-26 04:06:38,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:38,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905264800] [2020-10-26 04:06:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:06:39,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905264800] [2020-10-26 04:06:39,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:06:39,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 04:06:39,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976376947] [2020-10-26 04:06:39,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 04:06:39,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:06:39,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:06:39,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:06:39,168 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-10-26 04:06:39,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:06:39,403 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2020-10-26 04:06:39,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 04:06:39,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-26 04:06:39,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:06:39,417 INFO L225 Difference]: With dead ends: 82 [2020-10-26 04:06:39,418 INFO L226 Difference]: Without dead ends: 43 [2020-10-26 04:06:39,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:06:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-26 04:06:39,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-10-26 04:06:39,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-26 04:06:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-10-26 04:06:39,475 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2020-10-26 04:06:39,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:06:39,476 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-10-26 04:06:39,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 04:06:39,476 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-10-26 04:06:39,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-26 04:06:39,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:39,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:06:39,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 04:06:39,478 INFO L429 AbstractCegarLoop]: === Iteration 2 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:39,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:39,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1973615774, now seen corresponding path program 1 times [2020-10-26 04:06:39,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:39,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179589917] [2020-10-26 04:06:39,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:06:39,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179589917] [2020-10-26 04:06:39,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:06:39,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 04:06:39,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384599416] [2020-10-26 04:06:39,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 04:06:39,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:06:39,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:06:39,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:06:39,561 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 5 states. [2020-10-26 04:06:39,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:06:39,815 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-26 04:06:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 04:06:39,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-26 04:06:39,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:06:39,819 INFO L225 Difference]: With dead ends: 59 [2020-10-26 04:06:39,819 INFO L226 Difference]: Without dead ends: 57 [2020-10-26 04:06:39,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:06:39,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-26 04:06:39,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-10-26 04:06:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-26 04:06:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-10-26 04:06:39,835 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 9 [2020-10-26 04:06:39,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:06:39,835 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-10-26 04:06:39,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 04:06:39,836 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-10-26 04:06:39,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 04:06:39,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:39,837 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:06:39,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 04:06:39,837 INFO L429 AbstractCegarLoop]: === Iteration 3 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:39,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:39,838 INFO L82 PathProgramCache]: Analyzing trace with hash -716923045, now seen corresponding path program 1 times [2020-10-26 04:06:39,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:39,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008481845] [2020-10-26 04:06:39,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:39,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:06:39,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008481845] [2020-10-26 04:06:39,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:06:39,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 04:06:39,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856083891] [2020-10-26 04:06:39,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 04:06:39,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:06:39,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:06:39,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:06:39,931 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 5 states. [2020-10-26 04:06:40,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:06:40,115 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-26 04:06:40,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 04:06:40,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-26 04:06:40,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:06:40,119 INFO L225 Difference]: With dead ends: 77 [2020-10-26 04:06:40,119 INFO L226 Difference]: Without dead ends: 76 [2020-10-26 04:06:40,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 04:06:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-26 04:06:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2020-10-26 04:06:40,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-26 04:06:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-10-26 04:06:40,140 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 14 [2020-10-26 04:06:40,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:06:40,141 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-10-26 04:06:40,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 04:06:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-10-26 04:06:40,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 04:06:40,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:40,143 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:06:40,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 04:06:40,143 INFO L429 AbstractCegarLoop]: === Iteration 4 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:40,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:40,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1906450887, now seen corresponding path program 1 times [2020-10-26 04:06:40,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:40,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905306521] [2020-10-26 04:06:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:40,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-26 04:06:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:06:40,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905306521] [2020-10-26 04:06:40,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:06:40,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 04:06:40,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091323679] [2020-10-26 04:06:40,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 04:06:40,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:06:40,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:06:40,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:06:40,233 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 5 states. [2020-10-26 04:06:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:06:40,455 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2020-10-26 04:06:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 04:06:40,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-26 04:06:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:06:40,459 INFO L225 Difference]: With dead ends: 121 [2020-10-26 04:06:40,460 INFO L226 Difference]: Without dead ends: 85 [2020-10-26 04:06:40,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:06:40,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-26 04:06:40,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2020-10-26 04:06:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-26 04:06:40,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2020-10-26 04:06:40,497 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 15 [2020-10-26 04:06:40,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:06:40,497 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2020-10-26 04:06:40,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 04:06:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2020-10-26 04:06:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 04:06:40,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:40,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:06:40,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 04:06:40,500 INFO L429 AbstractCegarLoop]: === Iteration 5 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:40,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:40,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1029571699, now seen corresponding path program 1 times [2020-10-26 04:06:40,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:40,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227965630] [2020-10-26 04:06:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-26 04:06:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:06:40,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227965630] [2020-10-26 04:06:40,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:06:40,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 04:06:40,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070573222] [2020-10-26 04:06:40,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 04:06:40,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:06:40,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:06:40,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:06:40,623 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 5 states. [2020-10-26 04:06:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:06:40,770 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2020-10-26 04:06:40,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 04:06:40,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-26 04:06:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:06:40,773 INFO L225 Difference]: With dead ends: 102 [2020-10-26 04:06:40,773 INFO L226 Difference]: Without dead ends: 101 [2020-10-26 04:06:40,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 04:06:40,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-26 04:06:40,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2020-10-26 04:06:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-26 04:06:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2020-10-26 04:06:40,791 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 16 [2020-10-26 04:06:40,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:06:40,792 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2020-10-26 04:06:40,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 04:06:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2020-10-26 04:06:40,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 04:06:40,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:40,793 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:06:40,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 04:06:40,794 INFO L429 AbstractCegarLoop]: === Iteration 6 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:40,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:40,794 INFO L82 PathProgramCache]: Analyzing trace with hash -985645195, now seen corresponding path program 1 times [2020-10-26 04:06:40,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:40,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741077949] [2020-10-26 04:06:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 04:06:40,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741077949] [2020-10-26 04:06:40,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 04:06:40,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 04:06:40,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309440021] [2020-10-26 04:06:40,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 04:06:40,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:06:40,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 04:06:40,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 04:06:40,888 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand 5 states. [2020-10-26 04:06:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:06:41,012 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2020-10-26 04:06:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 04:06:41,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-26 04:06:41,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:06:41,015 INFO L225 Difference]: With dead ends: 133 [2020-10-26 04:06:41,015 INFO L226 Difference]: Without dead ends: 59 [2020-10-26 04:06:41,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-26 04:06:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-26 04:06:41,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2020-10-26 04:06:41,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-26 04:06:41,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-10-26 04:06:41,028 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2020-10-26 04:06:41,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:06:41,028 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-10-26 04:06:41,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 04:06:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-10-26 04:06:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 04:06:41,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:41,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:06:41,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 04:06:41,030 INFO L429 AbstractCegarLoop]: === Iteration 7 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:41,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:41,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1700557631, now seen corresponding path program 1 times [2020-10-26 04:06:41,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:41,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304509740] [2020-10-26 04:06:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:41,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-26 04:06:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:06:41,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304509740] [2020-10-26 04:06:41,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661019754] [2020-10-26 04:06:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 04:06:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:41,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 04:06:41,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:06:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:06:41,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:06:41,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-26 04:06:41,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718268947] [2020-10-26 04:06:41,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 04:06:41,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:06:41,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 04:06:41,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 04:06:41,345 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 9 states. [2020-10-26 04:06:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:06:41,485 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-10-26 04:06:41,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 04:06:41,485 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-26 04:06:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:06:41,486 INFO L225 Difference]: With dead ends: 67 [2020-10-26 04:06:41,487 INFO L226 Difference]: Without dead ends: 66 [2020-10-26 04:06:41,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-26 04:06:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-26 04:06:41,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-26 04:06:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-26 04:06:41,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-26 04:06:41,496 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2020-10-26 04:06:41,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:06:41,497 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-26 04:06:41,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 04:06:41,497 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-26 04:06:41,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 04:06:41,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:41,498 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:06:41,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-26 04:06:41,713 INFO L429 AbstractCegarLoop]: === Iteration 8 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:41,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:41,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1177679063, now seen corresponding path program 1 times [2020-10-26 04:06:41,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:41,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180298085] [2020-10-26 04:06:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:41,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-26 04:06:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:06:41,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180298085] [2020-10-26 04:06:41,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976909213] [2020-10-26 04:06:41,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 04:06:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:41,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:06:41,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:06:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:06:41,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:06:41,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-26 04:06:41,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754964599] [2020-10-26 04:06:41,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 04:06:41,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:06:41,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 04:06:41,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 04:06:41,900 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 8 states. [2020-10-26 04:06:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:06:42,057 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-10-26 04:06:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 04:06:42,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-26 04:06:42,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:06:42,059 INFO L225 Difference]: With dead ends: 65 [2020-10-26 04:06:42,059 INFO L226 Difference]: Without dead ends: 64 [2020-10-26 04:06:42,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 04:06:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-26 04:06:42,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2020-10-26 04:06:42,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-26 04:06:42,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-26 04:06:42,068 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 19 [2020-10-26 04:06:42,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:06:42,068 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-26 04:06:42,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 04:06:42,069 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-26 04:06:42,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 04:06:42,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:42,070 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:06:42,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:06:42,285 INFO L429 AbstractCegarLoop]: === Iteration 9 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:42,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:42,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1664379658, now seen corresponding path program 1 times [2020-10-26 04:06:42,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:42,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689304201] [2020-10-26 04:06:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-26 04:06:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:42,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-26 04:06:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 04:06:42,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689304201] [2020-10-26 04:06:42,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216483102] [2020-10-26 04:06:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 04:06:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:42,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 04:06:42,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:06:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 04:06:42,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:06:42,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-10-26 04:06:42,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408821891] [2020-10-26 04:06:42,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 04:06:42,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:06:42,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 04:06:42,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-26 04:06:42,511 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 11 states. [2020-10-26 04:06:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:06:42,745 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2020-10-26 04:06:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 04:06:42,746 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-26 04:06:42,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:06:42,748 INFO L225 Difference]: With dead ends: 94 [2020-10-26 04:06:42,748 INFO L226 Difference]: Without dead ends: 93 [2020-10-26 04:06:42,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-26 04:06:42,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-26 04:06:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2020-10-26 04:06:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-26 04:06:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2020-10-26 04:06:42,761 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 25 [2020-10-26 04:06:42,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:06:42,762 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2020-10-26 04:06:42,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 04:06:42,762 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2020-10-26 04:06:42,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 04:06:42,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:42,764 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:06:42,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:06:42,978 INFO L429 AbstractCegarLoop]: === Iteration 10 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:42,981 INFO L82 PathProgramCache]: Analyzing trace with hash 56161900, now seen corresponding path program 1 times [2020-10-26 04:06:42,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:42,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583417423] [2020-10-26 04:06:42,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:43,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-26 04:06:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-26 04:06:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 04:06:43,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583417423] [2020-10-26 04:06:43,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002547289] [2020-10-26 04:06:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 04:06:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:06:43,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 04:06:43,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:06:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 04:06:43,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 04:06:43,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-26 04:06:43,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425570987] [2020-10-26 04:06:43,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 04:06:43,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 04:06:43,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 04:06:43,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-26 04:06:43,162 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand 8 states. [2020-10-26 04:06:43,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 04:06:43,263 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2020-10-26 04:06:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 04:06:43,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-26 04:06:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 04:06:43,265 INFO L225 Difference]: With dead ends: 97 [2020-10-26 04:06:43,265 INFO L226 Difference]: Without dead ends: 64 [2020-10-26 04:06:43,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 04:06:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-26 04:06:43,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-10-26 04:06:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-26 04:06:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-10-26 04:06:43,273 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2020-10-26 04:06:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 04:06:43,273 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-10-26 04:06:43,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 04:06:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-10-26 04:06:43,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-26 04:06:43,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 04:06:43,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 04:06:43,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 04:06:43,488 INFO L429 AbstractCegarLoop]: === Iteration 11 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-26 04:06:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:06:43,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1710802957, now seen corresponding path program 1 times [2020-10-26 04:06:43,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:06:43,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451940571] [2020-10-26 04:06:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:06:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:06:43,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:06:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:06:43,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:06:43,561 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:06:43,561 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 04:06:43,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 04:06:43,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 04:06:43 BoogieIcfgContainer [2020-10-26 04:06:43,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 04:06:43,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:06:43,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:06:43,648 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:06:43,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:06:38" (3/4) ... [2020-10-26 04:06:43,651 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 04:06:43,749 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 04:06:43,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:06:43,755 INFO L168 Benchmark]: Toolchain (without parser) took 5877.29 ms. Allocated memory was 52.4 MB in the beginning and 86.0 MB in the end (delta: 33.6 MB). Free memory was 28.9 MB in the beginning and 40.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:06:43,759 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 52.4 MB. Free memory is still 38.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:06:43,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.66 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 32.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-26 04:06:43,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 52.4 MB. Free memory was 32.4 MB in the beginning and 31.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:06:43,762 INFO L168 Benchmark]: Boogie Preprocessor took 23.39 ms. Allocated memory is still 52.4 MB. Free memory was 31.1 MB in the beginning and 30.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:06:43,763 INFO L168 Benchmark]: RCFGBuilder took 475.24 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 30.0 MB in the beginning and 48.7 MB in the end (delta: -18.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:06:43,764 INFO L168 Benchmark]: TraceAbstraction took 4930.89 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 48.4 MB in the beginning and 43.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:06:43,764 INFO L168 Benchmark]: Witness Printer took 101.10 ms. Allocated memory is still 86.0 MB. Free memory was 43.4 MB in the beginning and 40.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:06:43,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 52.4 MB. Free memory is still 38.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.66 ms. Allocated memory is still 52.4 MB. Free memory was 28.2 MB in the beginning and 32.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 52.4 MB. Free memory was 32.4 MB in the beginning and 31.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.39 ms. Allocated memory is still 52.4 MB. Free memory was 31.1 MB in the beginning and 30.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 475.24 ms. Allocated memory was 52.4 MB in the beginning and 71.3 MB in the end (delta: 18.9 MB). Free memory was 30.0 MB in the beginning and 48.7 MB in the end (delta: -18.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4930.89 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 48.4 MB in the beginning and 43.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * Witness Printer took 101.10 ms. Allocated memory is still 86.0 MB. Free memory was 43.4 MB in the beginning and 40.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L28] int m = __VERIFIER_nondet_int(); [L29] COND FALSE !(m < 0) [L32] int n = __VERIFIER_nondet_int(); [L33] COND FALSE !(n < 0) [L36] CALL mult(m, n) VAL [\old(m)=2, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=0, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=0, \old(n)=1073741824, m=0, n=1073741824] [L21] COND TRUE m == 0 [L22] return 0; VAL [\old(m)=0, \old(n)=1073741824, \result=0, m=0, n=1073741824] [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824, m=1, mult(n, m - 1)=0, n=1073741824] [L24] EXPR n + mult(n, m - 1) [L24] return n + mult(n, m - 1); [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] [L24] n + mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 308 SDslu, 622 SDs, 0 SdLazy, 540 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 84 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 243 ConstructedInterpolants, 0 QuantifiedInterpolants, 12545 SizeOfPredicates, 5 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 34/70 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 incorrect! Received shutdown request...