./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/termination-crafted-lit/cstrncmp.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 .................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:32:56,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:32:56,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:32:56,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:32:56,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:32:56,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:32:56,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:32:56,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:32:56,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:32:56,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:32:56,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:32:56,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:32:56,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:32:56,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:32:56,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:32:56,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:32:56,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:32:56,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:32:56,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:32:56,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:32:56,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:32:56,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:32:56,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:32:56,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:32:56,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:32:56,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:32:56,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:32:56,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:32:56,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:32:56,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:32:56,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:32:56,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:32:56,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:32:56,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:32:56,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:32:56,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:32:56,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:32:56,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:32:56,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:32:56,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:32:56,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:32:56,671 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:32:56,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:32:56,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:32:56,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:32:56,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:32:56,722 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:32:56,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:32:56,723 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:32:56,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:32:56,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:32:56,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:32:56,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:32:56,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:32:56,726 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:32:56,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:32:56,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:32:56,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:32:56,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:32:56,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:32:56,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:32:56,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:32:56,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:32:56,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:32:56,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:32:56,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:32:56,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:32:56,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:32:56,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:32:56,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:32:56,731 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 [2020-10-19 18:32:57,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:32:57,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:32:57,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:32:57,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:32:57,069 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:32:57,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2020-10-19 18:32:57,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0161dec/eaadbbf099184aed9306521cde4ec7ac/FLAGaa8b9a4a4 [2020-10-19 18:32:57,598 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:32:57,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2020-10-19 18:32:57,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0161dec/eaadbbf099184aed9306521cde4ec7ac/FLAGaa8b9a4a4 [2020-10-19 18:32:57,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e0161dec/eaadbbf099184aed9306521cde4ec7ac [2020-10-19 18:32:57,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:32:57,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:32:57,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:32:57,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:32:57,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:32:57,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:32:57" (1/1) ... [2020-10-19 18:32:57,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cbc65c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:57, skipping insertion in model container [2020-10-19 18:32:57,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:32:57" (1/1) ... [2020-10-19 18:32:58,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:32:58,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:32:58,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:32:58,213 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:32:58,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:32:58,244 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:32:58,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58 WrapperNode [2020-10-19 18:32:58,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:32:58,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:32:58,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:32:58,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:32:58,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58" (1/1) ... [2020-10-19 18:32:58,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58" (1/1) ... [2020-10-19 18:32:58,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:32:58,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:32:58,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:32:58,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:32:58,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58" (1/1) ... [2020-10-19 18:32:58,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58" (1/1) ... [2020-10-19 18:32:58,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58" (1/1) ... [2020-10-19 18:32:58,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58" (1/1) ... [2020-10-19 18:32:58,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58" (1/1) ... [2020-10-19 18:32:58,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58" (1/1) ... [2020-10-19 18:32:58,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58" (1/1) ... [2020-10-19 18:32:58,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:32:58,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:32:58,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:32:58,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:32:58,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58" (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 [2020-10-19 18:32:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:32:58,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:32:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:32:58,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:32:58,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:32:58,737 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:32:58,738 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-19 18:32:58,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:58 BoogieIcfgContainer [2020-10-19 18:32:58,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:32:58,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:32:58,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:32:58,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:32:58,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:32:57" (1/3) ... [2020-10-19 18:32:58,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be0538d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:32:58, skipping insertion in model container [2020-10-19 18:32:58,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:58" (2/3) ... [2020-10-19 18:32:58,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be0538d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:32:58, skipping insertion in model container [2020-10-19 18:32:58,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:58" (3/3) ... [2020-10-19 18:32:58,749 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncmp.c [2020-10-19 18:32:58,762 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:32:58,770 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-10-19 18:32:58,786 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-19 18:32:58,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:32:58,813 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:32:58,813 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:32:58,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:32:58,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:32:58,814 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:32:58,814 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:32:58,815 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:32:58,833 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-19 18:32:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:32:58,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:58,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:32:58,843 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:58,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:58,849 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2020-10-19 18:32:58,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:58,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093305073] [2020-10-19 18:32:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:59,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093305073] [2020-10-19 18:32:59,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:59,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:32:59,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971688428] [2020-10-19 18:32:59,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:32:59,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:59,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:32:59,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:59,050 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-10-19 18:32:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:59,182 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2020-10-19 18:32:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:32:59,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-19 18:32:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:59,196 INFO L225 Difference]: With dead ends: 77 [2020-10-19 18:32:59,197 INFO L226 Difference]: Without dead ends: 52 [2020-10-19 18:32:59,201 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 [2020-10-19 18:32:59,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-19 18:32:59,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-10-19 18:32:59,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:32:59,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-19 18:32:59,254 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 4 [2020-10-19 18:32:59,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:59,255 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-19 18:32:59,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:32:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-19 18:32:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 18:32:59,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:59,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 18:32:59,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:32:59,258 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:59,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:59,259 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-10-19 18:32:59,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:59,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377609123] [2020-10-19 18:32:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:59,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377609123] [2020-10-19 18:32:59,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:59,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:32:59,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285495078] [2020-10-19 18:32:59,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:32:59,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:59,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:32:59,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:59,298 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 3 states. [2020-10-19 18:32:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:59,354 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-10-19 18:32:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:32:59,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-19 18:32:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:59,356 INFO L225 Difference]: With dead ends: 38 [2020-10-19 18:32:59,356 INFO L226 Difference]: Without dead ends: 34 [2020-10-19 18:32:59,358 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 [2020-10-19 18:32:59,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-19 18:32:59,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-10-19 18:32:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-19 18:32:59,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-19 18:32:59,364 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 4 [2020-10-19 18:32:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:59,365 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-19 18:32:59,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:32:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-19 18:32:59,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-19 18:32:59,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:59,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-19 18:32:59,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:32:59,367 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:59,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:59,368 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2020-10-19 18:32:59,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:59,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023198004] [2020-10-19 18:32:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:59,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023198004] [2020-10-19 18:32:59,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:59,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-19 18:32:59,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368056511] [2020-10-19 18:32:59,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:32:59,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:59,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:32:59,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:32:59,390 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2020-10-19 18:32:59,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:59,432 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-10-19 18:32:59,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:32:59,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-19 18:32:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:59,433 INFO L225 Difference]: With dead ends: 28 [2020-10-19 18:32:59,434 INFO L226 Difference]: Without dead ends: 24 [2020-10-19 18:32:59,434 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 [2020-10-19 18:32:59,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-19 18:32:59,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-19 18:32:59,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-19 18:32:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-19 18:32:59,439 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2020-10-19 18:32:59,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:59,440 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-19 18:32:59,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:32:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-19 18:32:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:32:59,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:59,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:59,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:32:59,442 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:59,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:59,442 INFO L82 PathProgramCache]: Analyzing trace with hash -442003725, now seen corresponding path program 1 times [2020-10-19 18:32:59,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:59,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031517272] [2020-10-19 18:32:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:59,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031517272] [2020-10-19 18:32:59,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:59,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:32:59,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447569173] [2020-10-19 18:32:59,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:32:59,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:59,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:32:59,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:32:59,526 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2020-10-19 18:32:59,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:59,558 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-10-19 18:32:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:32:59,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-19 18:32:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:59,559 INFO L225 Difference]: With dead ends: 24 [2020-10-19 18:32:59,559 INFO L226 Difference]: Without dead ends: 23 [2020-10-19 18:32:59,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:32:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-19 18:32:59,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-19 18:32:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-19 18:32:59,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-10-19 18:32:59,565 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2020-10-19 18:32:59,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:59,565 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-10-19 18:32:59,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:32:59,565 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-10-19 18:32:59,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:32:59,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:59,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:59,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:32:59,567 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:59,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:59,567 INFO L82 PathProgramCache]: Analyzing trace with hash -817213509, now seen corresponding path program 1 times [2020-10-19 18:32:59,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:59,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705169944] [2020-10-19 18:32:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:32:59,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:32:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:32:59,670 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:32:59,716 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:32:59,716 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:32:59,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:32:59,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:32:59 BoogieIcfgContainer [2020-10-19 18:32:59,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:32:59,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:32:59,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:32:59,775 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:32:59,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:58" (3/4) ... [2020-10-19 18:32:59,795 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:32:59,851 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:32:59,852 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:32:59,854 INFO L168 Benchmark]: Toolchain (without parser) took 1871.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 955.9 MB in the beginning and 1.0 GB in the end (delta: -78.3 MB). Peak memory consumption was 52.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:59,855 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:32:59,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.64 ms. Allocated memory is still 1.0 GB. Free memory was 955.9 MB in the beginning and 943.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:59,857 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:59,858 INFO L168 Benchmark]: Boogie Preprocessor took 28.51 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:59,859 INFO L168 Benchmark]: RCFGBuilder took 370.08 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:59,859 INFO L168 Benchmark]: TraceAbstraction took 1031.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:59,860 INFO L168 Benchmark]: Witness Printer took 78.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:59,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 255.64 ms. Allocated memory is still 1.0 GB. Free memory was 955.9 MB in the beginning and 943.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 96.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 943.9 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.51 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 370.08 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: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1031.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 11.5 GB. * Witness Printer took 78.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L28] unsigned char uc1, uc2; [L30] COND FALSE !(n == 0) [L33] n-- - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 93 SDslu, 59 SDs, 0 SdLazy, 63 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 420 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...