./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/indp3f.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/indp3f.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 f03703b22494be7ddda837748f21730889ad220d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 14:51:50,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 14:51:50,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 14:51:50,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 14:51:50,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 14:51:50,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 14:51:50,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 14:51:50,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 14:51:50,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 14:51:50,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 14:51:50,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 14:51:50,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 14:51:50,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 14:51:50,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 14:51:50,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 14:51:50,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 14:51:50,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 14:51:50,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 14:51:50,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 14:51:50,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 14:51:50,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 14:51:50,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 14:51:50,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 14:51:50,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 14:51:50,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 14:51:50,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 14:51:50,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 14:51:50,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 14:51:50,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 14:51:50,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 14:51:50,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 14:51:50,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 14:51:50,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 14:51:50,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 14:51:50,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 14:51:50,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 14:51:50,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 14:51:50,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 14:51:50,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 14:51:50,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 14:51:50,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 14:51:50,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 14:51:50,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 14:51:50,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 14:51:50,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 14:51:50,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 14:51:50,703 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 14:51:50,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 14:51:50,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 14:51:50,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 14:51:50,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 14:51:50,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 14:51:50,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 14:51:50,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 14:51:50,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 14:51:50,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 14:51:50,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 14:51:50,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 14:51:50,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 14:51:50,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 14:51:50,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 14:51:50,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 14:51:50,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 14:51:50,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:51:50,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 14:51:50,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 14:51:50,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 14:51:50,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 14:51:50,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 14:51:50,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 14:51:50,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 14:51:50,716 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 -> f03703b22494be7ddda837748f21730889ad220d [2020-07-28 14:51:51,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 14:51:51,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 14:51:51,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 14:51:51,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 14:51:51,116 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 14:51:51,117 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/indp3f.c [2020-07-28 14:51:51,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80c676cd9/c18f2e8ce4de4b4fbcb981f367742a0a/FLAG60e883ca2 [2020-07-28 14:51:51,629 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 14:51:51,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/indp3f.c [2020-07-28 14:51:51,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80c676cd9/c18f2e8ce4de4b4fbcb981f367742a0a/FLAG60e883ca2 [2020-07-28 14:51:51,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80c676cd9/c18f2e8ce4de4b4fbcb981f367742a0a [2020-07-28 14:51:51,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 14:51:51,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 14:51:51,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 14:51:51,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 14:51:51,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 14:51:51,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:51:51" (1/1) ... [2020-07-28 14:51:51,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403835b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:51, skipping insertion in model container [2020-07-28 14:51:51,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:51:51" (1/1) ... [2020-07-28 14:51:51,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 14:51:52,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 14:51:52,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:51:52,203 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 14:51:52,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:51:52,242 INFO L208 MainTranslator]: Completed translation [2020-07-28 14:51:52,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52 WrapperNode [2020-07-28 14:51:52,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 14:51:52,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 14:51:52,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 14:51:52,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 14:51:52,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52" (1/1) ... [2020-07-28 14:51:52,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52" (1/1) ... [2020-07-28 14:51:52,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 14:51:52,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 14:51:52,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 14:51:52,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 14:51:52,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52" (1/1) ... [2020-07-28 14:51:52,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52" (1/1) ... [2020-07-28 14:51:52,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52" (1/1) ... [2020-07-28 14:51:52,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52" (1/1) ... [2020-07-28 14:51:52,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52" (1/1) ... [2020-07-28 14:51:52,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52" (1/1) ... [2020-07-28 14:51:52,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52" (1/1) ... [2020-07-28 14:51:52,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 14:51:52,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 14:51:52,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 14:51:52,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 14:51:52,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52" (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 14:51:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 14:51:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 14:51:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 14:51:52,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 14:51:52,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 14:51:52,837 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 14:51:52,837 INFO L295 CfgBuilder]: Removed 13 assume(true) statements. [2020-07-28 14:51:52,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:52 BoogieIcfgContainer [2020-07-28 14:51:52,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 14:51:52,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 14:51:52,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 14:51:52,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 14:51:52,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 02:51:51" (1/3) ... [2020-07-28 14:51:52,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c968115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:51:52, skipping insertion in model container [2020-07-28 14:51:52,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:51:52" (2/3) ... [2020-07-28 14:51:52,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c968115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:51:52, skipping insertion in model container [2020-07-28 14:51:52,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:52" (3/3) ... [2020-07-28 14:51:52,852 INFO L109 eAbstractionObserver]: Analyzing ICFG indp3f.c [2020-07-28 14:51:52,862 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 14:51:52,870 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 14:51:52,886 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 14:51:52,907 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 14:51:52,907 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 14:51:52,908 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 14:51:52,908 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 14:51:52,908 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 14:51:52,908 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 14:51:52,909 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 14:51:52,909 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 14:51:52,923 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-28 14:51:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-28 14:51:52,930 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:51:52,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:51:52,932 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:51:52,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:51:52,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2020-07-28 14:51:52,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:51:52,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199506979] [2020-07-28 14:51:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:51:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:51:53,114 INFO L280 TraceCheckUtils]: 0: Hoare triple {30#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {30#true} is VALID [2020-07-28 14:51:53,115 INFO L280 TraceCheckUtils]: 1: Hoare triple {30#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_#t~mem10, main_#t~post9, 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; {30#true} is VALID [2020-07-28 14:51:53,115 INFO L280 TraceCheckUtils]: 2: Hoare triple {30#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; {30#true} is VALID [2020-07-28 14:51:53,117 INFO L280 TraceCheckUtils]: 3: Hoare triple {30#true} assume 0 == assume_abort_if_not_~cond;assume false; {31#false} is VALID [2020-07-28 14:51:53,118 INFO L280 TraceCheckUtils]: 4: Hoare triple {31#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; {31#false} is VALID [2020-07-28 14:51:53,118 INFO L280 TraceCheckUtils]: 5: Hoare triple {31#false} assume !(main_~i~0 < ~N~0); {31#false} is VALID [2020-07-28 14:51:53,119 INFO L280 TraceCheckUtils]: 6: Hoare triple {31#false} main_~i~0 := 0; {31#false} is VALID [2020-07-28 14:51:53,119 INFO L280 TraceCheckUtils]: 7: Hoare triple {31#false} assume !(main_~i~0 < ~N~0); {31#false} is VALID [2020-07-28 14:51:53,120 INFO L280 TraceCheckUtils]: 8: Hoare triple {31#false} main_~i~0 := 0; {31#false} is VALID [2020-07-28 14:51:53,120 INFO L280 TraceCheckUtils]: 9: Hoare triple {31#false} assume !(main_~i~0 < ~N~0); {31#false} is VALID [2020-07-28 14:51:53,121 INFO L280 TraceCheckUtils]: 10: Hoare triple {31#false} main_~i~0 := 0; {31#false} is VALID [2020-07-28 14:51:53,121 INFO L280 TraceCheckUtils]: 11: Hoare triple {31#false} assume !true; {31#false} is VALID [2020-07-28 14:51:53,122 INFO L280 TraceCheckUtils]: 12: Hoare triple {31#false} main_~i~0 := 0; {31#false} is VALID [2020-07-28 14:51:53,122 INFO L280 TraceCheckUtils]: 13: Hoare triple {31#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem10 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem10 == 1 + main_~i~0 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {31#false} is VALID [2020-07-28 14:51:53,122 INFO L280 TraceCheckUtils]: 14: Hoare triple {31#false} assume 0 == __VERIFIER_assert_~cond; {31#false} is VALID [2020-07-28 14:51:53,123 INFO L280 TraceCheckUtils]: 15: Hoare triple {31#false} assume !false; {31#false} is VALID [2020-07-28 14:51:53,126 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 14:51:53,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199506979] [2020-07-28 14:51:53,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:51:53,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 14:51:53,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321834038] [2020-07-28 14:51:53,137 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-28 14:51:53,139 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:51:53,143 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 14:51:53,219 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:53,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 14:51:53,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:51:53,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 14:51:53,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:51:53,237 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-07-28 14:51:53,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:53,343 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2020-07-28 14:51:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 14:51:53,344 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-28 14:51:53,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:51:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:51:53,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2020-07-28 14:51:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:51:53,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2020-07-28 14:51:53,376 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 72 transitions. [2020-07-28 14:51:53,497 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 72 edges. 72 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:53,508 INFO L225 Difference]: With dead ends: 50 [2020-07-28 14:51:53,509 INFO L226 Difference]: Without dead ends: 23 [2020-07-28 14:51:53,512 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 14:51:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-28 14:51:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-28 14:51:53,548 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:51:53,549 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand 23 states. [2020-07-28 14:51:53,550 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2020-07-28 14:51:53,550 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2020-07-28 14:51:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:53,553 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2020-07-28 14:51:53,554 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-07-28 14:51:53,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:53,555 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:53,555 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand 23 states. [2020-07-28 14:51:53,555 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 23 states. [2020-07-28 14:51:53,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:53,558 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2020-07-28 14:51:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-07-28 14:51:53,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:53,559 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:53,560 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:51:53,560 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:51:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-28 14:51:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-07-28 14:51:53,564 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2020-07-28 14:51:53,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:51:53,565 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-07-28 14:51:53,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 14:51:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-07-28 14:51:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-28 14:51:53,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:51:53,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:51:53,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 14:51:53,567 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:51:53,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:51:53,568 INFO L82 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2020-07-28 14:51:53,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:51:53,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187422332] [2020-07-28 14:51:53,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:51:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:51:53,667 INFO L280 TraceCheckUtils]: 0: Hoare triple {170#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {170#true} is VALID [2020-07-28 14:51:53,667 INFO L280 TraceCheckUtils]: 1: Hoare triple {170#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_#t~mem10, main_#t~post9, 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; {170#true} is VALID [2020-07-28 14:51:53,669 INFO L280 TraceCheckUtils]: 2: Hoare triple {170#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; {172#(<= 1 ~N~0)} is VALID [2020-07-28 14:51:53,671 INFO L280 TraceCheckUtils]: 3: Hoare triple {172#(<= 1 ~N~0)} assume !(0 == assume_abort_if_not_~cond); {172#(<= 1 ~N~0)} is VALID [2020-07-28 14:51:53,673 INFO L280 TraceCheckUtils]: 4: Hoare triple {172#(<= 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; {173#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-28 14:51:53,674 INFO L280 TraceCheckUtils]: 5: Hoare triple {173#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} assume !(main_~i~0 < ~N~0); {171#false} is VALID [2020-07-28 14:51:53,675 INFO L280 TraceCheckUtils]: 6: Hoare triple {171#false} main_~i~0 := 0; {171#false} is VALID [2020-07-28 14:51:53,675 INFO L280 TraceCheckUtils]: 7: Hoare triple {171#false} assume !(main_~i~0 < ~N~0); {171#false} is VALID [2020-07-28 14:51:53,676 INFO L280 TraceCheckUtils]: 8: Hoare triple {171#false} main_~i~0 := 0; {171#false} is VALID [2020-07-28 14:51:53,676 INFO L280 TraceCheckUtils]: 9: Hoare triple {171#false} assume !(main_~i~0 < ~N~0); {171#false} is VALID [2020-07-28 14:51:53,677 INFO L280 TraceCheckUtils]: 10: Hoare triple {171#false} main_~i~0 := 0; {171#false} is VALID [2020-07-28 14:51:53,677 INFO L280 TraceCheckUtils]: 11: Hoare triple {171#false} assume !(main_~i~0 < ~N~0); {171#false} is VALID [2020-07-28 14:51:53,677 INFO L280 TraceCheckUtils]: 12: Hoare triple {171#false} main_~i~0 := 0; {171#false} is VALID [2020-07-28 14:51:53,678 INFO L280 TraceCheckUtils]: 13: Hoare triple {171#false} assume !!(main_~i~0 < ~N~0);call main_#t~mem10 := read~int(main_~a~0.base, main_~a~0.offset + 8 * main_~i~0, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem10 == 1 + main_~i~0 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {171#false} is VALID [2020-07-28 14:51:53,678 INFO L280 TraceCheckUtils]: 14: Hoare triple {171#false} assume 0 == __VERIFIER_assert_~cond; {171#false} is VALID [2020-07-28 14:51:53,679 INFO L280 TraceCheckUtils]: 15: Hoare triple {171#false} assume !false; {171#false} is VALID [2020-07-28 14:51:53,681 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 14:51:53,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187422332] [2020-07-28 14:51:53,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:51:53,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 14:51:53,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329964904] [2020-07-28 14:51:53,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-28 14:51:53,685 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:51:53,686 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 14:51:53,713 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:53,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 14:51:53,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:51:53,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 14:51:53,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:51:53,715 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-07-28 14:51:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:53,956 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-07-28 14:51:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 14:51:53,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-28 14:51:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:51:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:51:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2020-07-28 14:51:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:51:53,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2020-07-28 14:51:53,966 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 64 transitions. [2020-07-28 14:51:54,067 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:51:54,070 INFO L225 Difference]: With dead ends: 53 [2020-07-28 14:51:54,070 INFO L226 Difference]: Without dead ends: 37 [2020-07-28 14:51:54,072 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 14:51:54,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-28 14:51:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-07-28 14:51:54,101 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:51:54,101 INFO L82 GeneralOperation]: Start isEquivalent. First operand 37 states. Second operand 27 states. [2020-07-28 14:51:54,103 INFO L74 IsIncluded]: Start isIncluded. First operand 37 states. Second operand 27 states. [2020-07-28 14:51:54,103 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 27 states. [2020-07-28 14:51:54,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:54,107 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-07-28 14:51:54,108 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-07-28 14:51:54,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:54,109 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:54,109 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand 37 states. [2020-07-28 14:51:54,109 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 37 states. [2020-07-28 14:51:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:51:54,114 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-07-28 14:51:54,114 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-07-28 14:51:54,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:51:54,115 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:51:54,115 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:51:54,115 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:51:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-28 14:51:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-07-28 14:51:54,117 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2020-07-28 14:51:54,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:51:54,117 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-07-28 14:51:54,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 14:51:54,118 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-07-28 14:51:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-28 14:51:54,118 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:51:54,119 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, 1, 1, 1, 1] [2020-07-28 14:51:54,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 14:51:54,120 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:51:54,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:51:54,120 INFO L82 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2020-07-28 14:51:54,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:51:54,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734145518] [2020-07-28 14:51:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:51:54,162 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-28 14:51:54,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129686515] [2020-07-28 14:51:54,163 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 14:51:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:51:54,222 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:51:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:51:54,242 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:51:54,282 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 14:51:54,283 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 14:51:54,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-28 14:51:54,553 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 14:51:54,553 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 14:51:54,554 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:51:54,554 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:51:54,554 WARN L170 areAnnotationChecker]: L53 has no Hoare annotation [2020-07-28 14:51:54,554 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:51:54,555 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:51:54,555 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 14:51:54,555 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 14:51:54,555 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:51:54,556 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:51:54,556 WARN L170 areAnnotationChecker]: L28-3 has no Hoare annotation [2020-07-28 14:51:54,556 WARN L170 areAnnotationChecker]: L28-4 has no Hoare annotation [2020-07-28 14:51:54,556 WARN L170 areAnnotationChecker]: L28-2 has no Hoare annotation [2020-07-28 14:51:54,557 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:51:54,557 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:51:54,557 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2020-07-28 14:51:54,557 WARN L170 areAnnotationChecker]: L33-4 has no Hoare annotation [2020-07-28 14:51:54,557 WARN L170 areAnnotationChecker]: L33-2 has no Hoare annotation [2020-07-28 14:51:54,558 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:51:54,558 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:51:54,558 WARN L170 areAnnotationChecker]: L38-3 has no Hoare annotation [2020-07-28 14:51:54,558 WARN L170 areAnnotationChecker]: L38-4 has no Hoare annotation [2020-07-28 14:51:54,559 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-28 14:51:54,559 WARN L170 areAnnotationChecker]: L43-3 has no Hoare annotation [2020-07-28 14:51:54,559 WARN L170 areAnnotationChecker]: L43-3 has no Hoare annotation [2020-07-28 14:51:54,559 WARN L170 areAnnotationChecker]: L43-3 has no Hoare annotation [2020-07-28 14:51:54,560 WARN L170 areAnnotationChecker]: L43-4 has no Hoare annotation [2020-07-28 14:51:54,560 WARN L170 areAnnotationChecker]: L43-2 has no Hoare annotation [2020-07-28 14:51:54,560 WARN L170 areAnnotationChecker]: L48-3 has no Hoare annotation [2020-07-28 14:51:54,560 WARN L170 areAnnotationChecker]: L48-3 has no Hoare annotation [2020-07-28 14:51:54,561 WARN L170 areAnnotationChecker]: L48-3 has no Hoare annotation [2020-07-28 14:51:54,561 WARN L170 areAnnotationChecker]: L48-4 has no Hoare annotation [2020-07-28 14:51:54,561 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:51:54,561 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:51:54,562 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:51:54,562 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:51:54,562 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-28 14:51:54,562 WARN L170 areAnnotationChecker]: L48-2 has no Hoare annotation [2020-07-28 14:51:54,563 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 14:51:54,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 02:51:54 BoogieIcfgContainer [2020-07-28 14:51:54,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 14:51:54,567 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 14:51:54,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 14:51:54,567 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 14:51:54,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:51:52" (3/4) ... [2020-07-28 14:51:54,573 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 14:51:54,641 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 14:51:54,641 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 14:51:54,648 INFO L168 Benchmark]: Toolchain (without parser) took 2672.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 961.6 MB in the beginning and 925.1 MB in the end (delta: 36.4 MB). Peak memory consumption was 132.9 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:54,649 INFO L168 Benchmark]: CDTParser took 0.86 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 14:51:54,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.32 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 949.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:54,652 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -136.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:54,653 INFO L168 Benchmark]: Boogie Preprocessor took 30.31 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 14:51:54,654 INFO L168 Benchmark]: RCFGBuilder took 468.38 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: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:54,656 INFO L168 Benchmark]: TraceAbstraction took 1722.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 931.8 MB in the end (delta: 127.2 MB). Peak memory consumption was 127.2 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:54,657 INFO L168 Benchmark]: Witness Printer took 74.54 ms. Allocated memory is still 1.1 GB. Free memory was 931.8 MB in the beginning and 925.1 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:51:54,664 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 0.86 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 264.32 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 949.5 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 99.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -136.6 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.31 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 468.38 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: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1722.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 931.8 MB in the end (delta: 127.2 MB). Peak memory consumption was 127.2 MB. Max. memory is 11.5 GB. * Witness Printer took 74.54 ms. Allocated memory is still 1.1 GB. Free memory was 931.8 MB in the beginning and 925.1 MB 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: 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