./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s4iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s4iff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer --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 aa2dda5680f87372970e50da43a1e6c1a86bd9e2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.24-cad4683 [2019-11-15 22:18:00,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:18:00,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:18:00,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:18:00,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:18:00,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:18:00,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:18:00,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:18:00,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:18:00,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:18:00,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:18:00,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:18:00,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:18:00,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:18:00,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:18:00,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:18:00,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:18:00,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:18:00,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:18:00,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:18:00,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:18:00,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:18:00,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:18:00,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:18:00,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:18:00,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:18:00,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:18:00,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:18:00,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:18:00,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:18:00,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:18:00,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:18:00,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:18:00,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:18:00,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:18:00,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:18:00,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:18:00,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:18:00,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:18:00,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:18:00,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:18:00,329 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 22:18:00,343 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:18:00,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:18:00,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:18:00,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:18:00,345 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:18:00,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:18:00,345 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:18:00,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:18:00,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:18:00,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:18:00,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 22:18:00,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:18:00,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 22:18:00,347 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:18:00,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 22:18:00,347 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:18:00,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 22:18:00,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:18:00,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:18:00,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:18:00,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:18:00,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:18:00,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:18:00,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:18:00,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 22:18:00,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:18:00,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:18:00,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 22:18:00,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> aa2dda5680f87372970e50da43a1e6c1a86bd9e2 [2019-11-15 22:18:00,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:18:00,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:18:00,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:18:00,400 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:18:00,401 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:18:00,402 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/../../sv-benchmarks/c/array-fpi/s4iff.c [2019-11-15 22:18:00,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/data/1a8bbe4ec/d4b6177517e74443bbb2cb163f8949ac/FLAG045fc812f [2019-11-15 22:18:00,896 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:18:00,897 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/sv-benchmarks/c/array-fpi/s4iff.c [2019-11-15 22:18:00,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/data/1a8bbe4ec/d4b6177517e74443bbb2cb163f8949ac/FLAG045fc812f [2019-11-15 22:18:01,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/data/1a8bbe4ec/d4b6177517e74443bbb2cb163f8949ac [2019-11-15 22:18:01,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:18:01,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 22:18:01,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:18:01,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:18:01,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:18:01,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:18:01" (1/1) ... [2019-11-15 22:18:01,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0515df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01, skipping insertion in model container [2019-11-15 22:18:01,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:18:01" (1/1) ... [2019-11-15 22:18:01,328 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:18:01,345 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:18:01,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:18:01,639 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:18:01,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:18:01,684 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:18:01,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01 WrapperNode [2019-11-15 22:18:01,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:18:01,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 22:18:01,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 22:18:01,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 22:18:01,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01" (1/1) ... [2019-11-15 22:18:01,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01" (1/1) ... [2019-11-15 22:18:01,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 22:18:01,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:18:01,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:18:01,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:18:01,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01" (1/1) ... [2019-11-15 22:18:01,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01" (1/1) ... [2019-11-15 22:18:01,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01" (1/1) ... [2019-11-15 22:18:01,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01" (1/1) ... [2019-11-15 22:18:01,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01" (1/1) ... [2019-11-15 22:18:01,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01" (1/1) ... [2019-11-15 22:18:01,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01" (1/1) ... [2019-11-15 22:18:01,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:18:01,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:18:01,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:18:01,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:18:01,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:18:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:18:01,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:18:01,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 22:18:01,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:18:01,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:18:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:18:01,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:18:02,147 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:18:02,147 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-15 22:18:02,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:18:02 BoogieIcfgContainer [2019-11-15 22:18:02,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:18:02,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:18:02,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:18:02,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:18:02,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:18:01" (1/3) ... [2019-11-15 22:18:02,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554997c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:18:02, skipping insertion in model container [2019-11-15 22:18:02,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:18:01" (2/3) ... [2019-11-15 22:18:02,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554997c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:18:02, skipping insertion in model container [2019-11-15 22:18:02,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:18:02" (3/3) ... [2019-11-15 22:18:02,163 INFO L109 eAbstractionObserver]: Analyzing ICFG s4iff.c [2019-11-15 22:18:02,172 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:18:02,188 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 22:18:02,198 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 22:18:02,220 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:18:02,220 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 22:18:02,220 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:18:02,220 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:18:02,221 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:18:02,221 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:18:02,221 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:18:02,221 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:18:02,234 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-15 22:18:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 22:18:02,241 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:18:02,241 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:18:02,243 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:18:02,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:18:02,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1476218026, now seen corresponding path program 1 times [2019-11-15 22:18:02,255 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:18:02,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852285082] [2019-11-15 22:18:02,255 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:02,256 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:02,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:18:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:18:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:18:02,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852285082] [2019-11-15 22:18:02,373 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:18:02,373 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 22:18:02,374 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67682815] [2019-11-15 22:18:02,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 22:18:02,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:18:02,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 22:18:02,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 22:18:02,392 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-15 22:18:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:18:02,407 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-15 22:18:02,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 22:18:02,408 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-15 22:18:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:18:02,417 INFO L225 Difference]: With dead ends: 29 [2019-11-15 22:18:02,417 INFO L226 Difference]: Without dead ends: 13 [2019-11-15 22:18:02,420 INFO L600 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 [2019-11-15 22:18:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-15 22:18:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-15 22:18:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-15 22:18:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2019-11-15 22:18:02,452 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2019-11-15 22:18:02,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:18:02,452 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-15 22:18:02,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 22:18:02,452 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2019-11-15 22:18:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 22:18:02,453 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:18:02,453 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:18:02,453 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:18:02,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:18:02,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1304115419, now seen corresponding path program 1 times [2019-11-15 22:18:02,454 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:18:02,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083181641] [2019-11-15 22:18:02,454 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:02,455 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:02,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:18:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:18:02,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:18:02,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083181641] [2019-11-15 22:18:02,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:18:02,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 22:18:02,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241526010] [2019-11-15 22:18:02,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 22:18:02,523 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:18:02,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 22:18:02,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:18:02,523 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2019-11-15 22:18:02,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:18:02,578 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2019-11-15 22:18:02,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 22:18:02,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-15 22:18:02,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:18:02,579 INFO L225 Difference]: With dead ends: 23 [2019-11-15 22:18:02,579 INFO L226 Difference]: Without dead ends: 15 [2019-11-15 22:18:02,580 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 22:18:02,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-15 22:18:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-15 22:18:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-15 22:18:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-15 22:18:02,583 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2019-11-15 22:18:02,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:18:02,583 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-15 22:18:02,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 22:18:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-15 22:18:02,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 22:18:02,584 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:18:02,584 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:18:02,585 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:18:02,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:18:02,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1358761923, now seen corresponding path program 1 times [2019-11-15 22:18:02,585 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:18:02,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084858542] [2019-11-15 22:18:02,586 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:02,586 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:02,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:18:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:18:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 22:18:02,659 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084858542] [2019-11-15 22:18:02,659 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:18:02,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:18:02,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680114616] [2019-11-15 22:18:02,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 22:18:02,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:18:02,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 22:18:02,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 22:18:02,660 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-11-15 22:18:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:18:02,742 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2019-11-15 22:18:02,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:18:02,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-15 22:18:02,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:18:02,743 INFO L225 Difference]: With dead ends: 22 [2019-11-15 22:18:02,744 INFO L226 Difference]: Without dead ends: 18 [2019-11-15 22:18:02,744 INFO L600 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 [2019-11-15 22:18:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-15 22:18:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2019-11-15 22:18:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-15 22:18:02,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-15 22:18:02,748 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2019-11-15 22:18:02,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:18:02,748 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-15 22:18:02,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 22:18:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-15 22:18:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 22:18:02,749 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:18:02,749 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:18:02,750 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:18:02,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:18:02,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1565637502, now seen corresponding path program 1 times [2019-11-15 22:18:02,750 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:18:02,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058792801] [2019-11-15 22:18:02,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:02,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:02,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:18:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:18:03,218 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2019-11-15 22:18:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:18:03,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058792801] [2019-11-15 22:18:03,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84288324] [2019-11-15 22:18:03,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:18:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:18:03,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-15 22:18:03,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:18:03,566 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-15 22:18:03,566 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:18:03,581 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:18:03,581 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:18:03,581 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2019-11-15 22:18:03,655 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 22:18:03,657 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-11-15 22:18:03,658 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:18:03,678 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:18:03,679 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:18:03,679 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2019-11-15 22:18:03,944 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-15 22:18:03,952 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:18:03,953 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 57 [2019-11-15 22:18:03,955 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:18:03,994 INFO L567 ElimStorePlain]: treesize reduction 32, result has 63.6 percent of original size [2019-11-15 22:18:03,995 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-11-15 22:18:03,996 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:71, output treesize:56 [2019-11-15 22:18:04,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 22:18:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:18:04,096 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:18:04,097 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2019-11-15 22:18:04,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702489868] [2019-11-15 22:18:04,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 22:18:04,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:18:04,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 22:18:04,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-11-15 22:18:04,099 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 18 states. [2019-11-15 22:18:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:18:04,979 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2019-11-15 22:18:04,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 22:18:04,979 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2019-11-15 22:18:04,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:18:04,981 INFO L225 Difference]: With dead ends: 33 [2019-11-15 22:18:04,982 INFO L226 Difference]: Without dead ends: 24 [2019-11-15 22:18:04,983 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2019-11-15 22:18:04,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-15 22:18:04,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-11-15 22:18:04,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-15 22:18:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-15 22:18:04,990 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 14 [2019-11-15 22:18:04,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:18:04,990 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-15 22:18:04,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 22:18:04,990 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-11-15 22:18:04,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 22:18:04,992 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:18:04,993 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:18:05,193 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:18:05,194 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:18:05,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:18:05,194 INFO L82 PathProgramCache]: Analyzing trace with hash -472130976, now seen corresponding path program 2 times [2019-11-15 22:18:05,194 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:18:05,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367301655] [2019-11-15 22:18:05,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:05,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:05,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:18:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:18:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:18:05,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367301655] [2019-11-15 22:18:05,284 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029791419] [2019-11-15 22:18:05,284 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:18:05,335 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 22:18:05,335 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:18:05,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:18:05,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:18:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:18:05,416 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:18:05,417 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-15 22:18:05,417 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199140147] [2019-11-15 22:18:05,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 22:18:05,418 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:18:05,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 22:18:05,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:18:05,418 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 10 states. [2019-11-15 22:18:05,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:18:05,604 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-11-15 22:18:05,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 22:18:05,604 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-15 22:18:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:18:05,605 INFO L225 Difference]: With dead ends: 31 [2019-11-15 22:18:05,605 INFO L226 Difference]: Without dead ends: 27 [2019-11-15 22:18:05,606 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2019-11-15 22:18:05,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-15 22:18:05,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-11-15 22:18:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-15 22:18:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-15 22:18:05,611 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2019-11-15 22:18:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:18:05,612 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-15 22:18:05,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 22:18:05,612 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-15 22:18:05,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 22:18:05,613 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:18:05,613 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:18:05,817 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:18:05,817 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:18:05,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:18:05,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1317941731, now seen corresponding path program 3 times [2019-11-15 22:18:05,818 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:18:05,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198097245] [2019-11-15 22:18:05,818 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:05,818 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:05,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:18:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:18:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:18:05,912 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198097245] [2019-11-15 22:18:05,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384779877] [2019-11-15 22:18:05,913 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:18:05,961 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-15 22:18:05,961 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 22:18:05,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 22:18:05,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:18:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:18:05,997 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 22:18:05,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-11-15 22:18:05,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291181452] [2019-11-15 22:18:05,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-15 22:18:05,998 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:18:05,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-15 22:18:05,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-15 22:18:05,999 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 10 states. [2019-11-15 22:18:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:18:06,097 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2019-11-15 22:18:06,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-15 22:18:06,099 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2019-11-15 22:18:06,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:18:06,099 INFO L225 Difference]: With dead ends: 35 [2019-11-15 22:18:06,100 INFO L226 Difference]: Without dead ends: 23 [2019-11-15 22:18:06,100 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-11-15 22:18:06,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-15 22:18:06,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-11-15 22:18:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 22:18:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-15 22:18:06,105 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 17 [2019-11-15 22:18:06,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:18:06,105 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-15 22:18:06,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-15 22:18:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-15 22:18:06,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 22:18:06,106 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:18:06,106 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:18:06,306 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:18:06,307 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 22:18:06,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:18:06,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1991965825, now seen corresponding path program 4 times [2019-11-15 22:18:06,307 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:18:06,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515511642] [2019-11-15 22:18:06,307 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:06,308 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:18:06,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:18:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:18:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 22:18:06,389 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 22:18:06,390 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 22:18:06,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:18:06 BoogieIcfgContainer [2019-11-15 22:18:06,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:18:06,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:18:06,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:18:06,436 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:18:06,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:18:02" (3/4) ... [2019-11-15 22:18:06,439 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 22:18:06,523 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e026758e-eaba-445c-b0b2-d959f67c3d24/bin/uautomizer/witness.graphml [2019-11-15 22:18:06,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:18:06,524 INFO L168 Benchmark]: Toolchain (without parser) took 5226.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -124.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-15 22:18:06,525 INFO L168 Benchmark]: CDTParser took 1.03 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:18:06,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:18:06,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:18:06,532 INFO L168 Benchmark]: Boogie Preprocessor took 23.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 22:18:06,533 INFO L168 Benchmark]: RCFGBuilder took 403.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-15 22:18:06,533 INFO L168 Benchmark]: TraceAbstraction took 4285.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 11.5 GB. [2019-11-15 22:18:06,534 INFO L168 Benchmark]: Witness Printer took 87.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-15 22:18:06,535 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 386.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 403.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4285.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 11.5 GB. * Witness Printer took 87.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 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: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long sum[1]; [L24] int *a = malloc(sizeof(int)*N); [L26] sum[0] = 1 [L27] i=0 VAL [N=2] [L27] COND TRUE i