./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/indp4f.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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/array-fpi/indp4f.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d8a0b7d3e20f319cb6888aade41e58f00cb04d4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 14:51:56,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 14:51:56,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 14:51:56,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 14:51:56,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 14:51:56,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 14:51:56,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 14:51:56,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 14:51:56,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 14:51:56,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 14:51:56,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 14:51:56,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 14:51:56,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 14:51:56,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 14:51:56,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 14:51:56,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 14:51:56,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 14:51:56,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 14:51:56,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 14:51:56,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 14:51:56,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 14:51:56,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 14:51:56,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 14:51:56,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 14:51:56,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 14:51:56,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 14:51:56,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 14:51:56,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 14:51:56,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 14:51:56,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 14:51:56,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 14:51:56,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 14:51:56,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 14:51:56,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 14:51:56,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 14:51:56,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 14:51:56,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 14:51:56,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 14:51:56,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 14:51:56,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 14:51:56,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 14:51:56,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 14:51:56,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 14:51:56,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 14:51:56,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 14:51:56,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 14:51:56,986 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 14:51:56,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 14:51:56,987 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 14:51:56,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 14:51:56,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 14:51:56,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 14:51:56,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 14:51:56,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 14:51:56,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 14:51:56,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 14:51:56,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 14:51:56,995 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 14:51:56,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 14:51:56,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 14:51:56,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 14:51:56,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 14:51:56,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 14:51:56,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:51:56,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 14:51:57,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 14:51:57,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 14:51:57,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 14:51:57,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 14:51:57,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 14:51:57,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 14:51:57,003 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 ! call(__VERIFIER_error())) ) 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 -> 3d8a0b7d3e20f319cb6888aade41e58f00cb04d4 [2020-07-28 14:51:57,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 14:51:57,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 14:51:57,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 14:51:57,426 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 14:51:57,428 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 14:51:57,429 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/indp4f.c [2020-07-28 14:51:57,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b890036d8/23ed7470e1954a2ebafb187347ea6bd7/FLAG039a2053d [2020-07-28 14:51:58,002 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 14:51:58,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/indp4f.c [2020-07-28 14:51:58,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b890036d8/23ed7470e1954a2ebafb187347ea6bd7/FLAG039a2053d [2020-07-28 14:51:58,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b890036d8/23ed7470e1954a2ebafb187347ea6bd7 [2020-07-28 14:51:58,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 14:51:58,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 14:51:58,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 14:51:58,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 14:51:58,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 14:51:58,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:51:58" (1/1) ... [2020-07-28 14:51:58,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15164b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58, skipping insertion in model container [2020-07-28 14:51:58,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:51:58" (1/1) ... [2020-07-28 14:51:58,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 14:51:58,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 14:51:58,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:51:58,626 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 14:51:58,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:51:58,669 INFO L208 MainTranslator]: Completed translation [2020-07-28 14:51:58,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58 WrapperNode [2020-07-28 14:51:58,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 14:51:58,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 14:51:58,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 14:51:58,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 14:51:58,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58" (1/1) ... [2020-07-28 14:51:58,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58" (1/1) ... [2020-07-28 14:51:58,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 14:51:58,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 14:51:58,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 14:51:58,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 14:51:58,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58" (1/1) ... [2020-07-28 14:51:58,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58" (1/1) ... [2020-07-28 14:51:58,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58" (1/1) ... [2020-07-28 14:51:58,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58" (1/1) ... [2020-07-28 14:51:58,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58" (1/1) ... [2020-07-28 14:51:58,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58" (1/1) ... [2020-07-28 14:51:58,811 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58" (1/1) ... [2020-07-28 14:51:58,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 14:51:58,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 14:51:58,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 14:51:58,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 14:51:58,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58" (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 [2020-07-28 14:51:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 14:51:58,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 14:51:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 14:51:58,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 14:51:58,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 14:51:59,253 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 14:51:59,253 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-07-28 14:51:59,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:59 BoogieIcfgContainer [2020-07-28 14:51:59,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 14:51:59,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 14:51:59,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 14:51:59,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 14:51:59,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 02:51:58" (1/3) ... [2020-07-28 14:51:59,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bad59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:51:59, skipping insertion in model container [2020-07-28 14:51:59,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:58" (2/3) ... [2020-07-28 14:51:59,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57bad59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:51:59, skipping insertion in model container [2020-07-28 14:51:59,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:59" (3/3) ... [2020-07-28 14:51:59,264 INFO L109 eAbstractionObserver]: Analyzing ICFG indp4f.c [2020-07-28 14:51:59,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 14:51:59,285 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 14:51:59,303 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 14:51:59,322 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 14:51:59,322 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 14:51:59,322 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 14:51:59,323 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 14:51:59,323 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 14:51:59,323 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 14:51:59,323 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 14:51:59,323 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 14:51:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-28 14:51:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-28 14:51:59,344 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:51:59,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:51:59,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:51:59,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:51:59,350 INFO L82 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2020-07-28 14:51:59,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:51:59,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026961512] [2020-07-28 14:51:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:51:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:51:59,506 INFO L280 TraceCheckUtils]: 0: Hoare triple {27#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {27#true} is VALID [2020-07-28 14:51:59,507 INFO L280 TraceCheckUtils]: 1: Hoare triple {27#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~post2, main_#t~mem4, main_#t~post3, main_#t~mem6, main_#t~post5, main_#t~mem8, main_#t~post7, main_~i~0, main_~a~0.base, main_~a~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {27#true} is VALID [2020-07-28 14:51:59,508 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {27#true} is VALID [2020-07-28 14:51:59,509 INFO L280 TraceCheckUtils]: 3: Hoare triple {27#true} assume 0 == assume_abort_if_not_~cond;assume false; {28#false} is VALID [2020-07-28 14:51:59,510 INFO L280 TraceCheckUtils]: 4: Hoare triple {28#false} havoc main_~i~0;call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:51:59,510 INFO L280 TraceCheckUtils]: 5: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:51:59,510 INFO L280 TraceCheckUtils]: 6: Hoare triple {28#false} main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:51:59,511 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:51:59,511 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#false} main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:51:59,512 INFO L280 TraceCheckUtils]: 9: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:51:59,512 INFO L280 TraceCheckUtils]: 10: Hoare triple {28#false} main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:51:59,512 INFO L280 TraceCheckUtils]: 11: Hoare triple {28#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem8 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem8 == main_~i~0 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {28#false} is VALID [2020-07-28 14:51:59,513 INFO L280 TraceCheckUtils]: 12: Hoare triple {28#false} assume 0 == __VERIFIER_assert_~cond; {28#false} is VALID [2020-07-28 14:51:59,513 INFO L280 TraceCheckUtils]: 13: Hoare triple {28#false} assume !false; {28#false} is VALID [2020-07-28 14:51:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:51:59,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026961512] [2020-07-28 14:51:59,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:51:59,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 14:51:59,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820815736] [2020-07-28 14:51:59,528 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-28 14:51:59,530 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:51:59,534 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 14:51:59,566 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:59,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 14:51:59,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:51:59,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 14:51:59,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:51:59,579 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-07-28 14:51:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:59,655 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2020-07-28 14:51:59,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 14:51:59,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-28 14:51:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:51:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:51:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2020-07-28 14:51:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:51:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2020-07-28 14:51:59,673 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 62 transitions. [2020-07-28 14:51:59,788 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:59,799 INFO L225 Difference]: With dead ends: 44 [2020-07-28 14:51:59,799 INFO L226 Difference]: Without dead ends: 20 [2020-07-28 14:51:59,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:51:59,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-28 14:51:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-28 14:51:59,838 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:51:59,838 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 20 states. [2020-07-28 14:51:59,839 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 14:51:59,839 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 14:51:59,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:59,842 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-28 14:51:59,843 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:51:59,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:59,843 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:59,843 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 14:51:59,844 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 14:51:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:59,846 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-28 14:51:59,846 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:51:59,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:59,847 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:59,847 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:51:59,848 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:51:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-28 14:51:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-07-28 14:51:59,852 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2020-07-28 14:51:59,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:51:59,852 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-07-28 14:51:59,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 14:51:59,852 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:51:59,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-28 14:51:59,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:51:59,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:51:59,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 14:51:59,854 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:51:59,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:51:59,854 INFO L82 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2020-07-28 14:51:59,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:51:59,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037730836] [2020-07-28 14:51:59,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:51:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:51:59,953 INFO L280 TraceCheckUtils]: 0: Hoare triple {149#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {149#true} is VALID [2020-07-28 14:51:59,954 INFO L280 TraceCheckUtils]: 1: Hoare triple {149#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~post2, main_#t~mem4, main_#t~post3, main_#t~mem6, main_#t~post5, main_#t~mem8, main_#t~post7, main_~i~0, main_~a~0.base, main_~a~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {149#true} is VALID [2020-07-28 14:51:59,955 INFO L280 TraceCheckUtils]: 2: Hoare triple {149#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {151#(<= 1 ~N~0)} is VALID [2020-07-28 14:51:59,956 INFO L280 TraceCheckUtils]: 3: Hoare triple {151#(<= 1 ~N~0)} assume !(0 == assume_abort_if_not_~cond); {151#(<= 1 ~N~0)} is VALID [2020-07-28 14:51:59,958 INFO L280 TraceCheckUtils]: 4: Hoare triple {151#(<= 1 ~N~0)} havoc main_~i~0;call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;main_~i~0 := 0; {152#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-28 14:51:59,959 INFO L280 TraceCheckUtils]: 5: Hoare triple {152#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:51:59,960 INFO L280 TraceCheckUtils]: 6: Hoare triple {150#false} main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:51:59,960 INFO L280 TraceCheckUtils]: 7: Hoare triple {150#false} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:51:59,961 INFO L280 TraceCheckUtils]: 8: Hoare triple {150#false} main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:51:59,961 INFO L280 TraceCheckUtils]: 9: Hoare triple {150#false} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:51:59,961 INFO L280 TraceCheckUtils]: 10: Hoare triple {150#false} main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:51:59,962 INFO L280 TraceCheckUtils]: 11: Hoare triple {150#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem8 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem8 == main_~i~0 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {150#false} is VALID [2020-07-28 14:51:59,962 INFO L280 TraceCheckUtils]: 12: Hoare triple {150#false} assume 0 == __VERIFIER_assert_~cond; {150#false} is VALID [2020-07-28 14:51:59,962 INFO L280 TraceCheckUtils]: 13: Hoare triple {150#false} assume !false; {150#false} is VALID [2020-07-28 14:51:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:51:59,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037730836] [2020-07-28 14:51:59,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:51:59,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 14:51:59,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903842124] [2020-07-28 14:51:59,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-28 14:51:59,968 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:51:59,969 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 14:51:59,990 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:59,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 14:51:59,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:51:59,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 14:51:59,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:51:59,992 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-07-28 14:52:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:52:00,159 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2020-07-28 14:52:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 14:52:00,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-28 14:52:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:52:00,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:52:00,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2020-07-28 14:52:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:52:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2020-07-28 14:52:00,166 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 53 transitions. [2020-07-28 14:52:00,246 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:52:00,248 INFO L225 Difference]: With dead ends: 45 [2020-07-28 14:52:00,249 INFO L226 Difference]: Without dead ends: 32 [2020-07-28 14:52:00,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:52:00,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-28 14:52:00,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-07-28 14:52:00,269 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:52:00,269 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand 23 states. [2020-07-28 14:52:00,269 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 23 states. [2020-07-28 14:52:00,269 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 23 states. [2020-07-28 14:52:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:52:00,272 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-07-28 14:52:00,272 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-28 14:52:00,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:52:00,273 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:52:00,274 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 32 states. [2020-07-28 14:52:00,274 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 32 states. [2020-07-28 14:52:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:52:00,277 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-07-28 14:52:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-07-28 14:52:00,278 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:52:00,278 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:52:00,279 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:52:00,279 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:52:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-28 14:52:00,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-07-28 14:52:00,281 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2020-07-28 14:52:00,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:52:00,282 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-07-28 14:52:00,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 14:52:00,283 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-07-28 14:52:00,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-28 14:52:00,284 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:52:00,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:52:00,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 14:52:00,285 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:52:00,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:52:00,285 INFO L82 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2020-07-28 14:52:00,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:52:00,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055458535] [2020-07-28 14:52:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:52:00,301 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-28 14:52:00,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399167739] [2020-07-28 14:52:00,302 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 [2020-07-28 14:52:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:52:00,359 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:52:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:52:00,379 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:52:00,436 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 14:52:00,437 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 14:52:00,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-28 14:52:00,730 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 14:52:00,730 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 14:52:00,731 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:52:00,731 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:52:00,731 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-28 14:52:00,731 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:52:00,732 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:52:00,732 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 14:52:00,733 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 14:52:00,733 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:52:00,733 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:52:00,734 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:52:00,734 WARN L170 areAnnotationChecker]: L28-4 has no Hoare annotation [2020-07-28 14:52:00,734 WARN L170 areAnnotationChecker]: L28-2 has no Hoare annotation [2020-07-28 14:52:00,734 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:52:00,735 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:52:00,735 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:52:00,735 WARN L170 areAnnotationChecker]: L33-4 has no Hoare annotation [2020-07-28 14:52:00,735 WARN L170 areAnnotationChecker]: L33-2 has no Hoare annotation [2020-07-28 14:52:00,735 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:52:00,736 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:52:00,736 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:52:00,736 WARN L170 areAnnotationChecker]: L38-4 has no Hoare annotation [2020-07-28 14:52:00,737 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-28 14:52:00,737 WARN L170 areAnnotationChecker]: L43-3 has no Hoare annotation [2020-07-28 14:52:00,737 WARN L170 areAnnotationChecker]: L43-3 has no Hoare annotation [2020-07-28 14:52:00,737 WARN L170 areAnnotationChecker]: L43-3 has no Hoare annotation [2020-07-28 14:52:00,738 WARN L170 areAnnotationChecker]: L43-4 has no Hoare annotation [2020-07-28 14:52:00,738 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:52:00,738 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:52:00,739 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:52:00,739 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:52:00,740 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-28 14:52:00,740 WARN L170 areAnnotationChecker]: L43-2 has no Hoare annotation [2020-07-28 14:52:00,740 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 14:52:00,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 02:52:00 BoogieIcfgContainer [2020-07-28 14:52:00,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 14:52:00,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 14:52:00,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 14:52:00,745 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 14:52:00,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:59" (3/4) ... [2020-07-28 14:52:00,753 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 14:52:00,864 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 14:52:00,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 14:52:00,868 INFO L168 Benchmark]: Toolchain (without parser) took 2512.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 960.2 MB in the beginning and 940.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 111.6 MB. Max. memory is 11.5 GB. [2020-07-28 14:52:00,869 INFO L168 Benchmark]: CDTParser took 0.96 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:52:00,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.55 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-07-28 14:52:00,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -133.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 14:52:00,870 INFO L168 Benchmark]: Boogie Preprocessor took 35.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:52:00,871 INFO L168 Benchmark]: RCFGBuilder took 440.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2020-07-28 14:52:00,872 INFO L168 Benchmark]: TraceAbstraction took 1486.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 947.6 MB in the end (delta: 107.5 MB). Peak memory consumption was 107.5 MB. Max. memory is 11.5 GB. [2020-07-28 14:52:00,872 INFO L168 Benchmark]: Witness Printer took 120.20 ms. Allocated memory is still 1.1 GB. Free memory was 947.6 MB in the beginning and 940.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-28 14:52:00,876 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.96 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 312.55 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 948.1 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 109.78 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -133.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.24 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 440.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1486.62 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 947.6 MB in the end (delta: 107.5 MB). Peak memory consumption was 107.5 MB. Max. memory is 11.5 GB. * Witness Printer took 120.20 ms. Allocated memory is still 1.1 GB. Free memory was 947.6 MB in the beginning and 940.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L11] COND FALSE !(!cond) VAL [N=1] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L28] i=0 VAL [N=1] [L28] COND TRUE i