./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/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 edcc597a46f9ad79563531282ca675b8b1d7c4bf ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:01:37,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:37,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:37,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:37,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:37,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:37,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:37,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:37,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:37,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:37,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:37,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:37,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:37,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:37,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:37,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:37,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:37,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:37,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:37,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:37,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:37,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:37,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:37,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:37,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:37,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:37,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:37,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:37,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:37,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:37,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:37,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:37,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:37,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:37,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:37,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:37,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:37,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:37,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:37,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:37,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:37,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2019-10-22 09:01:37,274 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:37,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:37,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:37,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:37,275 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:37,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:37,278 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:37,278 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:01:37,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:37,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:37,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:37,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:01:37,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:37,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:01:37,279 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 09:01:37,279 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:37,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:01:37,279 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:37,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:01:37,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:37,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:37,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:37,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:37,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:37,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:37,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:37,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:01:37,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:01:37,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:01:37,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:01:37,281 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/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/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 -> edcc597a46f9ad79563531282ca675b8b1d7c4bf [2019-10-22 09:01:37,312 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:37,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:37,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:37,326 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:37,326 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:37,327 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/bin/uautomizer/../../sv-benchmarks/c/recursive/McCarthy91-2.c [2019-10-22 09:01:37,382 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/bin/uautomizer/data/5eb36fc81/109c8d900cef4eca9da337364b3b134b/FLAGcc5611303 [2019-10-22 09:01:37,744 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:37,745 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/sv-benchmarks/c/recursive/McCarthy91-2.c [2019-10-22 09:01:37,751 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/bin/uautomizer/data/5eb36fc81/109c8d900cef4eca9da337364b3b134b/FLAGcc5611303 [2019-10-22 09:01:38,171 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/bin/uautomizer/data/5eb36fc81/109c8d900cef4eca9da337364b3b134b [2019-10-22 09:01:38,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:38,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:01:38,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:38,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:38,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:38,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:38" (1/1) ... [2019-10-22 09:01:38,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58004cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38, skipping insertion in model container [2019-10-22 09:01:38,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:38" (1/1) ... [2019-10-22 09:01:38,189 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:38,202 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:38,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:38,339 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:38,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:38,444 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:38,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38 WrapperNode [2019-10-22 09:01:38,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:38,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:38,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:01:38,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:01:38,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38" (1/1) ... [2019-10-22 09:01:38,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38" (1/1) ... [2019-10-22 09:01:38,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:38,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:38,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:38,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:38,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38" (1/1) ... [2019-10-22 09:01:38,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38" (1/1) ... [2019-10-22 09:01:38,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38" (1/1) ... [2019-10-22 09:01:38,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38" (1/1) ... [2019-10-22 09:01:38,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38" (1/1) ... [2019-10-22 09:01:38,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38" (1/1) ... [2019-10-22 09:01:38,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38" (1/1) ... [2019-10-22 09:01:38,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:38,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:38,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:38,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:38,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/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 [2019-10-22 09:01:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:38,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:38,567 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2019-10-22 09:01:38,567 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2019-10-22 09:01:38,977 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:38,977 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 09:01:38,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:38 BoogieIcfgContainer [2019-10-22 09:01:38,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:38,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:38,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:38,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:38,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:38" (1/3) ... [2019-10-22 09:01:38,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a2b4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:38, skipping insertion in model container [2019-10-22 09:01:38,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:38" (2/3) ... [2019-10-22 09:01:38,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a2b4c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:38, skipping insertion in model container [2019-10-22 09:01:38,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:38" (3/3) ... [2019-10-22 09:01:38,987 INFO L109 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2019-10-22 09:01:38,998 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:39,005 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 09:01:39,017 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 09:01:39,039 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:39,039 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:01:39,040 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:39,040 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:39,040 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:39,041 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:39,041 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:39,041 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-10-22 09:01:39,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:01:39,062 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:39,062 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:01:39,065 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:39,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:39,070 INFO L82 PathProgramCache]: Analyzing trace with hash 31043311, now seen corresponding path program 1 times [2019-10-22 09:01:39,076 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:39,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380222583] [2019-10-22 09:01:39,077 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,077 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:39,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380222583] [2019-10-22 09:01:39,226 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:39,227 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:01:39,227 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582924017] [2019-10-22 09:01:39,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:39,230 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:39,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:39,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:39,243 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2019-10-22 09:01:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:39,397 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2019-10-22 09:01:39,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:39,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-10-22 09:01:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:39,410 INFO L225 Difference]: With dead ends: 52 [2019-10-22 09:01:39,410 INFO L226 Difference]: Without dead ends: 41 [2019-10-22 09:01:39,414 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-22 09:01:39,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2019-10-22 09:01:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 09:01:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-10-22 09:01:39,458 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 5 [2019-10-22 09:01:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:39,458 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-10-22 09:01:39,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:39,459 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-10-22 09:01:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:01:39,459 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:39,459 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:01:39,460 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:39,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:39,460 INFO L82 PathProgramCache]: Analyzing trace with hash 31043471, now seen corresponding path program 1 times [2019-10-22 09:01:39,461 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:39,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461287442] [2019-10-22 09:01:39,461 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,461 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:39,479 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461287442] [2019-10-22 09:01:39,479 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:39,479 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:01:39,479 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497982578] [2019-10-22 09:01:39,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:01:39,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:39,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:01:39,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:01:39,482 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 3 states. [2019-10-22 09:01:39,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:39,504 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-10-22 09:01:39,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:01:39,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 09:01:39,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:39,506 INFO L225 Difference]: With dead ends: 40 [2019-10-22 09:01:39,506 INFO L226 Difference]: Without dead ends: 39 [2019-10-22 09:01:39,507 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:01:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-22 09:01:39,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2019-10-22 09:01:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 09:01:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-10-22 09:01:39,520 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 5 [2019-10-22 09:01:39,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:39,520 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-10-22 09:01:39,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:01:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-10-22 09:01:39,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 09:01:39,521 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:39,521 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:01:39,521 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:39,522 INFO L82 PathProgramCache]: Analyzing trace with hash 962342709, now seen corresponding path program 1 times [2019-10-22 09:01:39,522 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:39,522 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924263538] [2019-10-22 09:01:39,522 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:39,549 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924263538] [2019-10-22 09:01:39,549 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:39,549 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:01:39,550 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856486142] [2019-10-22 09:01:39,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 09:01:39,550 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:39,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:01:39,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:01:39,551 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2019-10-22 09:01:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:39,585 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2019-10-22 09:01:39,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:01:39,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 09:01:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:39,587 INFO L225 Difference]: With dead ends: 39 [2019-10-22 09:01:39,587 INFO L226 Difference]: Without dead ends: 38 [2019-10-22 09:01:39,588 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:01:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-22 09:01:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2019-10-22 09:01:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 09:01:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-22 09:01:39,597 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2019-10-22 09:01:39,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:39,597 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-22 09:01:39,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 09:01:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-22 09:01:39,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 09:01:39,598 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:39,598 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:01:39,598 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:39,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:39,599 INFO L82 PathProgramCache]: Analyzing trace with hash 962347674, now seen corresponding path program 1 times [2019-10-22 09:01:39,599 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:39,599 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31437175] [2019-10-22 09:01:39,599 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,599 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:39,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31437175] [2019-10-22 09:01:39,650 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:39,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:01:39,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165722560] [2019-10-22 09:01:39,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:39,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:39,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:39,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:39,651 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2019-10-22 09:01:39,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:39,746 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-10-22 09:01:39,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:39,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-10-22 09:01:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:39,748 INFO L225 Difference]: With dead ends: 50 [2019-10-22 09:01:39,749 INFO L226 Difference]: Without dead ends: 49 [2019-10-22 09:01:39,749 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:39,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-10-22 09:01:39,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2019-10-22 09:01:39,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-22 09:01:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2019-10-22 09:01:39,759 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 6 [2019-10-22 09:01:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:39,759 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2019-10-22 09:01:39,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2019-10-22 09:01:39,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 09:01:39,760 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:39,760 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:39,761 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:39,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:39,761 INFO L82 PathProgramCache]: Analyzing trace with hash -703912792, now seen corresponding path program 1 times [2019-10-22 09:01:39,761 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:39,762 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304772774] [2019-10-22 09:01:39,762 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,762 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:39,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304772774] [2019-10-22 09:01:39,795 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:39,795 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:01:39,796 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064013393] [2019-10-22 09:01:39,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:39,796 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:39,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:39,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:39,797 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 5 states. [2019-10-22 09:01:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:39,924 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-10-22 09:01:39,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:39,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-22 09:01:39,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:39,927 INFO L225 Difference]: With dead ends: 68 [2019-10-22 09:01:39,927 INFO L226 Difference]: Without dead ends: 67 [2019-10-22 09:01:39,928 INFO L600 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 [2019-10-22 09:01:39,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-22 09:01:39,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2019-10-22 09:01:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-10-22 09:01:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2019-10-22 09:01:39,939 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 10 [2019-10-22 09:01:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:39,940 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2019-10-22 09:01:39,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2019-10-22 09:01:39,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 09:01:39,941 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:39,941 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:39,941 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:39,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:39,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1217128367, now seen corresponding path program 1 times [2019-10-22 09:01:39,942 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:39,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940725571] [2019-10-22 09:01:39,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:39,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:39,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940725571] [2019-10-22 09:01:39,978 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:39,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:01:39,978 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669925311] [2019-10-22 09:01:39,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:01:39,979 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:39,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:01:39,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:01:39,979 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 4 states. [2019-10-22 09:01:39,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:39,991 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2019-10-22 09:01:39,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:01:39,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-22 09:01:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:39,992 INFO L225 Difference]: With dead ends: 58 [2019-10-22 09:01:39,993 INFO L226 Difference]: Without dead ends: 47 [2019-10-22 09:01:39,993 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:01:39,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-22 09:01:40,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-10-22 09:01:40,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-22 09:01:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2019-10-22 09:01:40,001 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2019-10-22 09:01:40,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:40,002 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2019-10-22 09:01:40,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:01:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2019-10-22 09:01:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 09:01:40,002 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:40,003 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:40,003 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:40,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:40,003 INFO L82 PathProgramCache]: Analyzing trace with hash -843390153, now seen corresponding path program 1 times [2019-10-22 09:01:40,003 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:40,004 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304950090] [2019-10-22 09:01:40,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:40,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:40,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:01:40,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304950090] [2019-10-22 09:01:40,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789386838] [2019-10-22 09:01:40,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/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 [2019-10-22 09:01:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-22 09:01:40,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:40,282 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:40,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2019-10-22 09:01:40,283 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20178450] [2019-10-22 09:01:40,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 09:01:40,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:40,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 09:01:40,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2019-10-22 09:01:40,284 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 15 states. [2019-10-22 09:01:40,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:40,590 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2019-10-22 09:01:40,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 09:01:40,591 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2019-10-22 09:01:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:40,593 INFO L225 Difference]: With dead ends: 70 [2019-10-22 09:01:40,593 INFO L226 Difference]: Without dead ends: 69 [2019-10-22 09:01:40,594 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2019-10-22 09:01:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-10-22 09:01:40,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2019-10-22 09:01:40,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-22 09:01:40,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2019-10-22 09:01:40,611 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 18 [2019-10-22 09:01:40,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:40,612 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2019-10-22 09:01:40,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 09:01:40,612 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2019-10-22 09:01:40,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 09:01:40,613 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:40,613 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:40,817 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:40,818 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:40,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:40,818 INFO L82 PathProgramCache]: Analyzing trace with hash -375285934, now seen corresponding path program 1 times [2019-10-22 09:01:40,818 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:40,819 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113820932] [2019-10-22 09:01:40,819 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:40,819 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:40,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:01:40,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113820932] [2019-10-22 09:01:40,900 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:40,900 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:01:40,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506447778] [2019-10-22 09:01:40,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:01:40,901 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:40,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:01:40,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:40,902 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2019-10-22 09:01:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:41,043 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2019-10-22 09:01:41,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:01:41,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-10-22 09:01:41,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:41,045 INFO L225 Difference]: With dead ends: 98 [2019-10-22 09:01:41,045 INFO L226 Difference]: Without dead ends: 97 [2019-10-22 09:01:41,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:01:41,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-10-22 09:01:41,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2019-10-22 09:01:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-10-22 09:01:41,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2019-10-22 09:01:41,081 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 19 [2019-10-22 09:01:41,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:41,081 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2019-10-22 09:01:41,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:01:41,081 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2019-10-22 09:01:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 09:01:41,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:41,083 INFO L380 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-10-22 09:01:41,083 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:41,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:41,084 INFO L82 PathProgramCache]: Analyzing trace with hash -50265865, now seen corresponding path program 1 times [2019-10-22 09:01:41,085 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:41,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688298054] [2019-10-22 09:01:41,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:41,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:41,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-22 09:01:41,252 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688298054] [2019-10-22 09:01:41,254 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:41,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:01:41,255 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145238512] [2019-10-22 09:01:41,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:01:41,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:41,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:01:41,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:41,257 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 8 states. [2019-10-22 09:01:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:41,409 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2019-10-22 09:01:41,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 09:01:41,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2019-10-22 09:01:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:41,411 INFO L225 Difference]: With dead ends: 92 [2019-10-22 09:01:41,411 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:01:41,412 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2019-10-22 09:01:41,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:01:41,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:01:41,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:01:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:01:41,413 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2019-10-22 09:01:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:41,413 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:01:41,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:41,414 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:01:41,414 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:01:41,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:01:41,698 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:01:41,698 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2019-10-22 09:01:41,698 INFO L443 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2019-10-22 09:01:41,698 INFO L443 ceAbstractionStarter]: For program point L27-2(line 27) no Hoare annotation was computed. [2019-10-22 09:01:41,698 INFO L443 ceAbstractionStarter]: For program point L27-3(line 27) no Hoare annotation was computed. [2019-10-22 09:01:41,699 INFO L443 ceAbstractionStarter]: For program point L27-4(line 27) no Hoare annotation was computed. [2019-10-22 09:01:41,699 INFO L443 ceAbstractionStarter]: For program point L27-6(line 27) no Hoare annotation was computed. [2019-10-22 09:01:41,699 INFO L443 ceAbstractionStarter]: For program point L27-7(lines 27 31) no Hoare annotation was computed. [2019-10-22 09:01:41,699 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2019-10-22 09:01:41,699 INFO L443 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2019-10-22 09:01:41,699 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:01:41,699 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:01:41,700 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2019-10-22 09:01:41,700 INFO L443 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2019-10-22 09:01:41,700 INFO L439 ceAbstractionStarter]: At program point L24(lines 24 32) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-10-22 09:01:41,700 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-22 09:01:41,700 INFO L443 ceAbstractionStarter]: For program point f91EXIT(lines 15 21) no Hoare annotation was computed. [2019-10-22 09:01:41,700 INFO L443 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-10-22 09:01:41,700 INFO L443 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-10-22 09:01:41,700 INFO L443 ceAbstractionStarter]: For program point f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-10-22 09:01:41,701 INFO L439 ceAbstractionStarter]: At program point L19-2(line 19) the Hoare annotation is: (let ((.cse0 (= f91_~x |f91_#in~x|))) (and (or (not (<= 0 (+ |f91_#in~x| 2147483648))) .cse0 (not (<= |f91_#in~x| 2147483647))) (or (not (<= 91 |f91_#in~x|)) (and .cse0 (<= f91_~x 100)) (not (<= |f91_#in~x| 2147483648))))) [2019-10-22 09:01:41,701 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-10-22 09:01:41,701 INFO L443 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-10-22 09:01:41,701 INFO L443 ceAbstractionStarter]: For program point f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-10-22 09:01:41,701 INFO L443 ceAbstractionStarter]: For program point L19-3(line 19) no Hoare annotation was computed. [2019-10-22 09:01:41,701 INFO L439 ceAbstractionStarter]: At program point L19-4(line 19) the Hoare annotation is: (let ((.cse0 (= f91_~x |f91_#in~x|))) (and (or (and .cse0 (<= f91_~x 100)) (not (<= 91 |f91_#in~x|)) (not (<= |f91_#in~x| 2147483648))) (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (not (<= |f91_#in~x| 2147483647)) (and (<= 91 |f91_#t~ret0|) (and (<= |f91_#t~ret0| 2147483648) .cse0))))) [2019-10-22 09:01:41,701 INFO L443 ceAbstractionStarter]: For program point L19-5(line 19) no Hoare annotation was computed. [2019-10-22 09:01:41,702 INFO L446 ceAbstractionStarter]: At program point f91ENTRY(lines 15 21) the Hoare annotation is: true [2019-10-22 09:01:41,702 INFO L443 ceAbstractionStarter]: For program point f91FINAL(lines 15 21) no Hoare annotation was computed. [2019-10-22 09:01:41,702 INFO L443 ceAbstractionStarter]: For program point f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 09:01:41,702 INFO L443 ceAbstractionStarter]: For program point f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-10-22 09:01:41,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:01:41 BoogieIcfgContainer [2019-10-22 09:01:41,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:01:41,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:41,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:41,719 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:41,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:38" (3/4) ... [2019-10-22 09:01:41,723 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:01:41,734 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2019-10-22 09:01:41,739 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 09:01:41,739 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 09:01:41,787 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f6026c9f-9ec2-4a44-81a2-8f7470e18522/bin/uautomizer/witness.graphml [2019-10-22 09:01:41,790 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:41,792 INFO L168 Benchmark]: Toolchain (without parser) took 3617.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -158.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:41,793 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:41,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:41,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:41,794 INFO L168 Benchmark]: Boogie Preprocessor took 16.37 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:41,794 INFO L168 Benchmark]: RCFGBuilder took 484.36 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:41,795 INFO L168 Benchmark]: TraceAbstraction took 2737.20 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: 11.6 MB). Peak memory consumption was 246.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:41,795 INFO L168 Benchmark]: Witness Printer took 71.92 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:41,798 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.80 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.37 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 484.36 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2737.20 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: 11.6 MB). Peak memory consumption was 246.6 MB. Max. memory is 11.5 GB. * Witness Printer took 71.92 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: 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: 24]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 6 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 9, TraceHistogramMax: 7, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 177 SDtfs, 230 SDslu, 295 SDs, 0 SdLazy, 434 SolverSat, 104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=8, 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, 9 MinimizatonAttempts, 57 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 59 PreInvPairs, 60 NumberOfFragments, 83 HoareAnnotationTreeSize, 59 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 313 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 6147 SizeOfPredicates, 4 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 94/102 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...