./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 9a8b2e8d 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_1.3.100.v20150511-1540.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/recursive/McCarthy91-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-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 32bit --witnessprinter.graph.data.programhash 3e87f89409ab3e763661ad617b0dadcb988e72d1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:28:24,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:28:24,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:28:24,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:28:24,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:28:24,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:28:24,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:28:24,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:28:24,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:28:24,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:28:24,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:28:24,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:28:24,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:28:24,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:28:24,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:28:24,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:28:24,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:28:24,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:28:24,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:28:24,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:28:24,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:28:24,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:28:24,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:28:24,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:28:24,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:28:24,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:28:24,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:28:24,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:28:24,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:28:24,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:28:24,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:28:24,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:28:24,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:28:24,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:28:24,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:28:24,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:28:24,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:28:24,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:28:24,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:28:24,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:28:24,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:28:24,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-10-20 06:28:24,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:28:24,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:28:24,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:28:24,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:28:24,402 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:28:24,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:28:24,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:28:24,403 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:28:24,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:28:24,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:28:24,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:28:24,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:28:24,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:28:24,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:28:24,405 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:28:24,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:28:24,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:28:24,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:28:24,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:28:24,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:28:24,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:28:24,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:28:24,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:28:24,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:28:24,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:28:24,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:28:24,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:28:24,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:28:24,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:28:24,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:28:24,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:28:24,409 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 -> /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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e87f89409ab3e763661ad617b0dadcb988e72d1 [2020-10-20 06:28:24,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:28:24,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:28:24,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:28:24,616 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:28:24,617 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:28:24,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/McCarthy91-2.c [2020-10-20 06:28:24,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e06870b0a/b86a0438e85d42edba39b2ab1a15eabb/FLAG3b3b3910b [2020-10-20 06:28:25,196 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:28:25,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/McCarthy91-2.c [2020-10-20 06:28:25,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e06870b0a/b86a0438e85d42edba39b2ab1a15eabb/FLAG3b3b3910b [2020-10-20 06:28:25,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e06870b0a/b86a0438e85d42edba39b2ab1a15eabb [2020-10-20 06:28:25,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:28:25,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:28:25,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:28:25,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:28:25,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:28:25,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:28:25" (1/1) ... [2020-10-20 06:28:25,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa86cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25, skipping insertion in model container [2020-10-20 06:28:25,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:28:25" (1/1) ... [2020-10-20 06:28:25,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:28:25,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:28:25,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:28:25,854 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:28:25,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:28:25,885 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:28:25,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25 WrapperNode [2020-10-20 06:28:25,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:28:25,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:28:25,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:28:25,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:28:25,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25" (1/1) ... [2020-10-20 06:28:25,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25" (1/1) ... [2020-10-20 06:28:25,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:28:25,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:28:25,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:28:25,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:28:25,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25" (1/1) ... [2020-10-20 06:28:25,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25" (1/1) ... [2020-10-20 06:28:25,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25" (1/1) ... [2020-10-20 06:28:25,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25" (1/1) ... [2020-10-20 06:28:25,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25" (1/1) ... [2020-10-20 06:28:25,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25" (1/1) ... [2020-10-20 06:28:25,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25" (1/1) ... [2020-10-20 06:28:25,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:28:25,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:28:25,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:28:25,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:28:25,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25" (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 [2020-10-20 06:28:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:28:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:28:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:28:26,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:28:26,005 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-10-20 06:28:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-10-20 06:28:26,236 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:28:26,236 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 06:28:26,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:26 BoogieIcfgContainer [2020-10-20 06:28:26,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:28:26,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:28:26,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:28:26,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:28:26,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:28:25" (1/3) ... [2020-10-20 06:28:26,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1bcea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:28:26, skipping insertion in model container [2020-10-20 06:28:26,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:28:25" (2/3) ... [2020-10-20 06:28:26,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f1bcea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:28:26, skipping insertion in model container [2020-10-20 06:28:26,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:26" (3/3) ... [2020-10-20 06:28:26,248 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2020-10-20 06:28:26,263 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:28:26,273 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-20 06:28:26,293 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 06:28:26,321 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:28:26,322 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:28:26,322 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:28:26,322 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:28:26,322 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:28:26,323 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:28:26,323 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:28:26,323 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:28:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-20 06:28:26,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:28:26,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:26,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:28:26,351 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:26,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:26,357 INFO L82 PathProgramCache]: Analyzing trace with hash 890933714, now seen corresponding path program 1 times [2020-10-20 06:28:26,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:26,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093841407] [2020-10-20 06:28:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:28:26,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093841407] [2020-10-20 06:28:26,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:26,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:28:26,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207012411] [2020-10-20 06:28:26,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:28:26,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:26,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:28:26,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:28:26,601 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-10-20 06:28:26,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:26,747 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-10-20 06:28:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:28:26,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-10-20 06:28:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:26,761 INFO L225 Difference]: With dead ends: 54 [2020-10-20 06:28:26,761 INFO L226 Difference]: Without dead ends: 42 [2020-10-20 06:28:26,765 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 [2020-10-20 06:28:26,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-20 06:28:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-10-20 06:28:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 06:28:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-10-20 06:28:26,814 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 6 [2020-10-20 06:28:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:26,815 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-10-20 06:28:26,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:28:26,815 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-10-20 06:28:26,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:28:26,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:26,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:28:26,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:28:26,817 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:26,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:26,818 INFO L82 PathProgramCache]: Analyzing trace with hash 890933874, now seen corresponding path program 1 times [2020-10-20 06:28:26,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:26,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768895365] [2020-10-20 06:28:26,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:28:26,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768895365] [2020-10-20 06:28:26,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:26,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:28:26,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250644875] [2020-10-20 06:28:26,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:28:26,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:26,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:28:26,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:28:26,858 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 3 states. [2020-10-20 06:28:26,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:26,884 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-10-20 06:28:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:28:26,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 06:28:26,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:26,886 INFO L225 Difference]: With dead ends: 41 [2020-10-20 06:28:26,886 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 06:28:26,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:28:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 06:28:26,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-10-20 06:28:26,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 06:28:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-20 06:28:26,906 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 6 [2020-10-20 06:28:26,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:26,906 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-20 06:28:26,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:28:26,907 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-20 06:28:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:28:26,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:26,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:26,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:28:26,909 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:26,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:26,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1849141429, now seen corresponding path program 1 times [2020-10-20 06:28:26,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:26,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227512721] [2020-10-20 06:28:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:28:26,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227512721] [2020-10-20 06:28:26,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:26,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:28:26,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647619155] [2020-10-20 06:28:26,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:28:26,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:26,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:28:26,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:28:26,943 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 3 states. [2020-10-20 06:28:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:26,967 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-10-20 06:28:26,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:28:26,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-20 06:28:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:26,969 INFO L225 Difference]: With dead ends: 40 [2020-10-20 06:28:26,969 INFO L226 Difference]: Without dead ends: 39 [2020-10-20 06:28:26,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:28:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-20 06:28:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-10-20 06:28:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 06:28:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-20 06:28:26,981 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 7 [2020-10-20 06:28:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:26,981 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-20 06:28:26,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:28:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-20 06:28:26,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:28:26,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:26,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:26,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:28:26,984 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:26,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1849146394, now seen corresponding path program 1 times [2020-10-20 06:28:26,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:26,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893361805] [2020-10-20 06:28:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:28:27,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893361805] [2020-10-20 06:28:27,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:27,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:28:27,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49882789] [2020-10-20 06:28:27,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:28:27,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:27,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:28:27,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:28:27,063 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 5 states. [2020-10-20 06:28:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:27,185 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-20 06:28:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:28:27,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-20 06:28:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:27,187 INFO L225 Difference]: With dead ends: 51 [2020-10-20 06:28:27,188 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 06:28:27,188 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 [2020-10-20 06:28:27,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 06:28:27,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-10-20 06:28:27,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 06:28:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-20 06:28:27,199 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 7 [2020-10-20 06:28:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:27,199 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-20 06:28:27,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:28:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-20 06:28:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:28:27,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:27,201 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:27,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:28:27,201 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:27,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:27,202 INFO L82 PathProgramCache]: Analyzing trace with hash -712030488, now seen corresponding path program 1 times [2020-10-20 06:28:27,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:27,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228920307] [2020-10-20 06:28:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:28:27,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228920307] [2020-10-20 06:28:27,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:27,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:28:27,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172598279] [2020-10-20 06:28:27,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:28:27,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:27,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:28:27,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:28:27,247 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2020-10-20 06:28:27,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:27,331 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-10-20 06:28:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:28:27,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 06:28:27,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:27,333 INFO L225 Difference]: With dead ends: 69 [2020-10-20 06:28:27,334 INFO L226 Difference]: Without dead ends: 68 [2020-10-20 06:28:27,334 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 [2020-10-20 06:28:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-20 06:28:27,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 59. [2020-10-20 06:28:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-20 06:28:27,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-10-20 06:28:27,348 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 11 [2020-10-20 06:28:27,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:27,348 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-10-20 06:28:27,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:28:27,349 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-10-20 06:28:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:28:27,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:27,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:27,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:28:27,351 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:27,351 INFO L82 PathProgramCache]: Analyzing trace with hash -100890224, now seen corresponding path program 1 times [2020-10-20 06:28:27,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:27,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126247252] [2020-10-20 06:28:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:27,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 06:28:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:28:27,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126247252] [2020-10-20 06:28:27,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:27,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:28:27,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570678713] [2020-10-20 06:28:27,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:28:27,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:27,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:28:27,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:28:27,401 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 4 states. [2020-10-20 06:28:27,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:27,413 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-10-20 06:28:27,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:28:27,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 06:28:27,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:27,415 INFO L225 Difference]: With dead ends: 59 [2020-10-20 06:28:27,415 INFO L226 Difference]: Without dead ends: 48 [2020-10-20 06:28:27,415 INFO L677 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 [2020-10-20 06:28:27,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-20 06:28:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-20 06:28:27,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-20 06:28:27,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-20 06:28:27,424 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-10-20 06:28:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:27,425 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-20 06:28:27,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:28:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-20 06:28:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:28:27,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:27,426 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:27,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:28:27,426 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:27,427 INFO L82 PathProgramCache]: Analyzing trace with hash 213464823, now seen corresponding path program 1 times [2020-10-20 06:28:27,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:27,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82050373] [2020-10-20 06:28:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:27,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:28:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:28:27,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82050373] [2020-10-20 06:28:27,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102669771] [2020-10-20 06:28:27,526 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 [2020-10-20 06:28:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:27,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:28:27,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:28:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:28:27,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:28:27,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2020-10-20 06:28:27,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755366086] [2020-10-20 06:28:27,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 06:28:27,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:27,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 06:28:27,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:28:27,783 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 15 states. [2020-10-20 06:28:28,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:28,091 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2020-10-20 06:28:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 06:28:28,091 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 19 [2020-10-20 06:28:28,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:28,093 INFO L225 Difference]: With dead ends: 71 [2020-10-20 06:28:28,093 INFO L226 Difference]: Without dead ends: 70 [2020-10-20 06:28:28,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2020-10-20 06:28:28,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-20 06:28:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 47. [2020-10-20 06:28:28,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 06:28:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-10-20 06:28:28,113 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 19 [2020-10-20 06:28:28,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:28,114 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-10-20 06:28:28,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 06:28:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-10-20 06:28:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:28:28,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:28,116 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:28,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-20 06:28:28,330 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:28,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:28,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1972520043, now seen corresponding path program 1 times [2020-10-20 06:28:28,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:28,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157363525] [2020-10-20 06:28:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:28,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:28:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:28:28,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157363525] [2020-10-20 06:28:28,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:28,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:28:28,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306012783] [2020-10-20 06:28:28,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:28:28,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:28,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:28:28,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:28:28,396 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 7 states. [2020-10-20 06:28:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:28,559 INFO L93 Difference]: Finished difference Result 99 states and 128 transitions. [2020-10-20 06:28:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:28:28,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-20 06:28:28,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:28,562 INFO L225 Difference]: With dead ends: 99 [2020-10-20 06:28:28,562 INFO L226 Difference]: Without dead ends: 98 [2020-10-20 06:28:28,563 INFO L677 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 [2020-10-20 06:28:28,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-20 06:28:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2020-10-20 06:28:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-20 06:28:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2020-10-20 06:28:28,580 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 20 [2020-10-20 06:28:28,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:28,581 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2020-10-20 06:28:28,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:28:28,581 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2020-10-20 06:28:28,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-20 06:28:28,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:28:28,583 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:28:28,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:28:28,584 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:28:28,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:28:28,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1233206362, now seen corresponding path program 1 times [2020-10-20 06:28:28,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:28:28,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213597127] [2020-10-20 06:28:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:28:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:28,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-20 06:28:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:28,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:28:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:28:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:28:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-20 06:28:28,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213597127] [2020-10-20 06:28:28,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:28:28,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:28:28,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919387562] [2020-10-20 06:28:28,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:28:28,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:28:28,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:28:28,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:28:28,700 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand 8 states. [2020-10-20 06:28:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:28:28,893 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2020-10-20 06:28:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:28:28,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-20 06:28:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:28:28,895 INFO L225 Difference]: With dead ends: 93 [2020-10-20 06:28:28,895 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:28:28,903 INFO L677 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 [2020-10-20 06:28:28,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:28:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:28:28,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:28:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:28:28,904 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-10-20 06:28:28,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:28:28,904 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:28:28,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:28:28,904 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:28:28,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:28:28,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:28:28,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:28:29,179 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-10-20 06:28:29,179 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:28:29,179 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-20 06:28:29,179 INFO L274 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-10-20 06:28:29,179 INFO L274 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-10-20 06:28:29,179 INFO L274 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2020-10-20 06:28:29,180 INFO L274 CegarLoopResult]: For program point L29-6(line 29) no Hoare annotation was computed. [2020-10-20 06:28:29,180 INFO L274 CegarLoopResult]: For program point L29-7(lines 29 33) no Hoare annotation was computed. [2020-10-20 06:28:29,180 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 06:28:29,180 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-20 06:28:29,180 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 06:28:29,180 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-10-20 06:28:29,180 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:28:29,180 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:28:29,181 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2020-10-20 06:28:29,181 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-10-20 06:28:29,181 INFO L270 CegarLoopResult]: At program point L26(lines 26 34) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-10-20 06:28:29,181 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-20 06:28:29,181 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-10-20 06:28:29,181 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-20 06:28:29,182 INFO L270 CegarLoopResult]: At program point L21-2(line 21) 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 (and (<= f91_~x 100) .cse0) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))))) [2020-10-20 06:28:29,182 INFO L274 CegarLoopResult]: For program point f91EXIT(lines 17 23) no Hoare annotation was computed. [2020-10-20 06:28:29,182 INFO L274 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2020-10-20 06:28:29,182 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-20 06:28:29,182 INFO L274 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-10-20 06:28:29,182 INFO L270 CegarLoopResult]: At program point L21-4(line 21) the Hoare annotation is: (let ((.cse0 (= f91_~x |f91_#in~x|))) (and (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (and (<= 91 |f91_#t~ret7|) .cse0 (<= |f91_#t~ret7| 2147483648)) (not (<= |f91_#in~x| 2147483647))) (or (and (<= f91_~x 100) .cse0) (not (<= |f91_#in~x| 2147483648)) (not (<= 91 |f91_#in~x|))))) [2020-10-20 06:28:29,183 INFO L274 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-10-20 06:28:29,183 INFO L274 CegarLoopResult]: For program point f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-20 06:28:29,183 INFO L277 CegarLoopResult]: At program point f91ENTRY(lines 17 23) the Hoare annotation is: true [2020-10-20 06:28:29,183 INFO L274 CegarLoopResult]: For program point f91FINAL(lines 17 23) no Hoare annotation was computed. [2020-10-20 06:28:29,183 INFO L274 CegarLoopResult]: For program point f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-10-20 06:28:29,183 INFO L274 CegarLoopResult]: For program point f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-10-20 06:28:29,184 INFO L274 CegarLoopResult]: For program point f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-10-20 06:28:29,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:28:29 BoogieIcfgContainer [2020-10-20 06:28:29,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:28:29,200 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:28:29,200 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:28:29,201 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:28:29,201 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:28:26" (3/4) ... [2020-10-20 06:28:29,205 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:28:29,211 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2020-10-20 06:28:29,216 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-20 06:28:29,217 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 06:28:29,217 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:28:29,217 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:28:29,273 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:28:29,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:28:29,276 INFO L168 Benchmark]: Toolchain (without parser) took 3655.05 ms. Allocated memory was 41.9 MB in the beginning and 54.0 MB in the end (delta: 12.1 MB). Free memory was 19.9 MB in the beginning and 27.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:29,281 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.6 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:28:29,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.21 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.0 MB in the beginning and 19.0 MB in the end (delta: 36.8 kB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:29,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.32 ms. Allocated memory is still 42.5 MB. Free memory was 19.0 MB in the beginning and 17.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:29,283 INFO L168 Benchmark]: Boogie Preprocessor took 17.92 ms. Allocated memory is still 42.5 MB. Free memory was 17.3 MB in the beginning and 16.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:29,284 INFO L168 Benchmark]: RCFGBuilder took 299.79 ms. Allocated memory was 42.5 MB in the beginning and 43.5 MB in the end (delta: 1.0 MB). Free memory was 16.0 MB in the beginning and 17.1 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:29,285 INFO L168 Benchmark]: TraceAbstraction took 2960.49 ms. Allocated memory was 43.5 MB in the beginning and 54.0 MB in the end (delta: 10.5 MB). Free memory was 16.6 MB in the beginning and 30.4 MB in the end (delta: -13.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:29,286 INFO L168 Benchmark]: Witness Printer took 73.20 ms. Allocated memory is still 54.0 MB. Free memory was 30.4 MB in the beginning and 27.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:28:29,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.6 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 260.21 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.0 MB in the beginning and 19.0 MB in the end (delta: 36.8 kB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 33.32 ms. Allocated memory is still 42.5 MB. Free memory was 19.0 MB in the beginning and 17.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 17.92 ms. Allocated memory is still 42.5 MB. Free memory was 17.3 MB in the beginning and 16.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 299.79 ms. Allocated memory was 42.5 MB in the beginning and 43.5 MB in the end (delta: 1.0 MB). Free memory was 16.0 MB in the beginning and 17.1 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2960.49 ms. Allocated memory was 43.5 MB in the beginning and 54.0 MB in the end (delta: 10.5 MB). Free memory was 16.6 MB in the beginning and 30.4 MB in the end (delta: -13.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 14.3 GB. * Witness Printer took 73.20 ms. Allocated memory is still 54.0 MB. Free memory was 30.4 MB in the beginning and 27.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: 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: 21]: 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: 26]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 9, TraceHistogramMax: 7, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 186 SDtfs, 222 SDslu, 325 SDs, 0 SdLazy, 457 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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, 82 HoareAnnotationTreeSize, 59 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 314 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 6594 SizeOfPredicates, 4 NumberOfNonLiveVariables, 68 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...