./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/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 1f270b702de634d3ad2ee5a400388c6410a4cf10 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-f470102 [2019-12-07 12:38:38,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:38:38,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:38:38,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:38:38,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:38:38,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:38:38,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:38:38,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:38:38,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:38:38,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:38:38,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:38:38,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:38:38,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:38:38,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:38:38,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:38:38,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:38:38,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:38:38,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:38:38,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:38:38,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:38:38,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:38:38,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:38:38,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:38:38,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:38:38,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:38:38,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:38:38,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:38:38,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:38:38,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:38:38,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:38:38,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:38:38,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:38:38,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:38:38,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:38:38,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:38:38,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:38:38,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:38:38,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:38:38,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:38:38,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:38:38,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:38:38,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 12:38:38,262 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:38:38,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:38:38,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:38:38,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:38:38,263 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:38:38,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:38:38,264 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:38:38,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:38:38,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:38:38,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:38:38,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 12:38:38,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:38:38,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 12:38:38,264 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:38:38,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 12:38:38,265 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:38:38,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 12:38:38,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:38:38,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:38:38,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:38:38,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:38:38,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:38:38,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:38:38,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:38:38,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 12:38:38,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:38:38,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:38:38,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 12:38:38,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:38:38,266 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_26e2efb6-d113-4398-b38a-2a6f232bee78/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 -> 1f270b702de634d3ad2ee5a400388c6410a4cf10 [2019-12-07 12:38:38,364 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:38:38,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:38:38,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:38:38,375 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:38:38,375 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:38:38,375 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/bin/uautomizer/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2019-12-07 12:38:38,412 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/bin/uautomizer/data/8a5c58f68/927c4d99258e4d0b9206aadc357f3f35/FLAG6caddfbc3 [2019-12-07 12:38:38,807 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:38:38,807 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2019-12-07 12:38:38,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/bin/uautomizer/data/8a5c58f68/927c4d99258e4d0b9206aadc357f3f35/FLAG6caddfbc3 [2019-12-07 12:38:38,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/bin/uautomizer/data/8a5c58f68/927c4d99258e4d0b9206aadc357f3f35 [2019-12-07 12:38:38,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:38:38,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 12:38:38,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:38:38,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:38:38,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:38:38,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:38:38" (1/1) ... [2019-12-07 12:38:38,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c131985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:38, skipping insertion in model container [2019-12-07 12:38:38,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:38:38" (1/1) ... [2019-12-07 12:38:38,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:38:38,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:38:39,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:38:39,080 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:38:39,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:38:39,136 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:38:39,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39 WrapperNode [2019-12-07 12:38:39,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:38:39,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 12:38:39,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 12:38:39,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 12:38:39,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39" (1/1) ... [2019-12-07 12:38:39,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39" (1/1) ... [2019-12-07 12:38:39,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 12:38:39,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:38:39,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:38:39,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:38:39,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39" (1/1) ... [2019-12-07 12:38:39,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39" (1/1) ... [2019-12-07 12:38:39,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39" (1/1) ... [2019-12-07 12:38:39,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39" (1/1) ... [2019-12-07 12:38:39,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39" (1/1) ... [2019-12-07 12:38:39,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39" (1/1) ... [2019-12-07 12:38:39,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39" (1/1) ... [2019-12-07 12:38:39,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:38:39,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:38:39,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:38:39,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:38:39,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/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 [2019-12-07 12:38:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 12:38:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 12:38:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 12:38:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 12:38:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 12:38:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 12:38:39,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:38:39,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:38:39,462 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:38:39,463 INFO L287 CfgBuilder]: Removed 13 assume(true) statements. [2019-12-07 12:38:39,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:38:39 BoogieIcfgContainer [2019-12-07 12:38:39,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:38:39,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:38:39,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:38:39,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:38:39,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:38:38" (1/3) ... [2019-12-07 12:38:39,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396f9687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:38:39, skipping insertion in model container [2019-12-07 12:38:39,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:39" (2/3) ... [2019-12-07 12:38:39,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396f9687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:38:39, skipping insertion in model container [2019-12-07 12:38:39,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:38:39" (3/3) ... [2019-12-07 12:38:39,468 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2019-12-07 12:38:39,474 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:38:39,479 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 12:38:39,486 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 12:38:39,500 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:38:39,500 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 12:38:39,500 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:38:39,501 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:38:39,501 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:38:39,501 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:38:39,501 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:38:39,501 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:38:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-12-07 12:38:39,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 12:38:39,514 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:38:39,514 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 12:38:39,515 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:38:39,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:38:39,518 INFO L82 PathProgramCache]: Analyzing trace with hash 889968582, now seen corresponding path program 1 times [2019-12-07 12:38:39,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:38:39,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772193458] [2019-12-07 12:38:39,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:38:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:38:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:38:39,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772193458] [2019-12-07 12:38:39,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:38:39,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 12:38:39,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604020433] [2019-12-07 12:38:39,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 12:38:39,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:38:39,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 12:38:39,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 12:38:39,638 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-12-07 12:38:39,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:38:39,649 INFO L93 Difference]: Finished difference Result 53 states and 84 transitions. [2019-12-07 12:38:39,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 12:38:39,650 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-07 12:38:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:38:39,656 INFO L225 Difference]: With dead ends: 53 [2019-12-07 12:38:39,656 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 12:38:39,658 INFO L630 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 [2019-12-07 12:38:39,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 12:38:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 12:38:39,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 12:38:39,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-12-07 12:38:39,686 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2019-12-07 12:38:39,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:38:39,686 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-12-07 12:38:39,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 12:38:39,686 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-12-07 12:38:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 12:38:39,686 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:38:39,686 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:38:39,687 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:38:39,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:38:39,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1806853233, now seen corresponding path program 1 times [2019-12-07 12:38:39,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:38:39,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364746893] [2019-12-07 12:38:39,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:38:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:38:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:38:39,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364746893] [2019-12-07 12:38:39,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:38:39,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 12:38:39,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257565798] [2019-12-07 12:38:39,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:38:39,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:38:39,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:38:39,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:38:39,736 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2019-12-07 12:38:39,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:38:39,787 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-12-07 12:38:39,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 12:38:39,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 12:38:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:38:39,788 INFO L225 Difference]: With dead ends: 31 [2019-12-07 12:38:39,788 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 12:38:39,788 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:38:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 12:38:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2019-12-07 12:38:39,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 12:38:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-12-07 12:38:39,791 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 7 [2019-12-07 12:38:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:38:39,791 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-12-07 12:38:39,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:38:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-12-07 12:38:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 12:38:39,792 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:38:39,792 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:38:39,792 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:38:39,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:38:39,792 INFO L82 PathProgramCache]: Analyzing trace with hash -856511048, now seen corresponding path program 1 times [2019-12-07 12:38:39,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:38:39,793 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106479634] [2019-12-07 12:38:39,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:38:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:38:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:38:39,858 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106479634] [2019-12-07 12:38:39,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:38:39,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 12:38:39,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773819795] [2019-12-07 12:38:39,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:38:39,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:38:39,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:38:39,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:38:39,860 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2019-12-07 12:38:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:38:39,947 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2019-12-07 12:38:39,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 12:38:39,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-07 12:38:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:38:39,948 INFO L225 Difference]: With dead ends: 47 [2019-12-07 12:38:39,948 INFO L226 Difference]: Without dead ends: 45 [2019-12-07 12:38:39,948 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 12:38:39,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-12-07 12:38:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-12-07 12:38:39,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 12:38:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-12-07 12:38:39,953 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 10 [2019-12-07 12:38:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:38:39,953 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-12-07 12:38:39,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:38:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-12-07 12:38:39,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 12:38:39,953 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:38:39,953 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:38:39,953 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:38:39,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:38:39,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1594081566, now seen corresponding path program 1 times [2019-12-07 12:38:39,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:38:39,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564137181] [2019-12-07 12:38:39,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:38:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:38:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:38:40,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564137181] [2019-12-07 12:38:40,104 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249455809] [2019-12-07 12:38:40,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/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 [2019-12-07 12:38:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:38:40,153 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 35 conjunts are in the unsatisfiable core [2019-12-07 12:38:40,158 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 12:38:40,199 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-12-07 12:38:40,199 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:38:40,207 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,211 INFO L377 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 13 treesize of output 9 [2019-12-07 12:38:40,211 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:38:40,218 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,218 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:38:40,219 INFO L239 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2019-12-07 12:38:40,262 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,263 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-12-07 12:38:40,264 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:38:40,311 INFO L614 ElimStorePlain]: treesize reduction 14, result has 88.6 percent of original size [2019-12-07 12:38:40,317 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:38:40,317 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:38:40,336 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,341 INFO L534 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:38:40,357 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,360 INFO L534 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:38:40,382 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,386 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:38:40,400 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,400 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2019-12-07 12:38:40,401 INFO L534 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-12-07 12:38:40,442 INFO L614 ElimStorePlain]: treesize reduction 20, result has 72.2 percent of original size [2019-12-07 12:38:40,443 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:38:40,443 INFO L239 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:111, output treesize:27 [2019-12-07 12:38:40,488 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,488 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2019-12-07 12:38:40,489 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:38:40,523 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,525 INFO L430 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_23|, |v_#memory_int_30|, |v_#memory_int_31|, |v_#memory_int_32|], 4=[|v_#memory_int_34|]} [2019-12-07 12:38:40,528 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:38:40,529 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:38:40,559 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,562 INFO L534 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:38:40,590 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,592 INFO L534 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:38:40,614 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,616 INFO L534 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 12:38:40,640 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:38:40,644 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 12:38:40,685 INFO L343 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2019-12-07 12:38:40,685 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 85 [2019-12-07 12:38:40,686 INFO L534 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-12-07 12:38:40,729 INFO L614 ElimStorePlain]: treesize reduction 18, result has 81.4 percent of original size [2019-12-07 12:38:40,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 12:38:40,738 INFO L534 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2019-12-07 12:38:40,739 INFO L239 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:249, output treesize:107 [2019-12-07 12:38:46,788 WARN L192 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 76 [2019-12-07 12:39:10,925 WARN L192 SmtUtils]: Spent 24.05 s on a formula simplification that was a NOOP. DAG size: 78 [2019-12-07 12:39:10,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 12:39:10,949 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2019-12-07 12:39:10,949 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 12:39:10,978 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:39:10,981 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2019-12-07 12:39:10,982 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 12:39:11,004 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:39:11,007 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2019-12-07 12:39:11,007 INFO L534 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-12-07 12:39:11,023 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 12:39:11,023 INFO L534 ElimStorePlain]: Start of recursive call 1: 15 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 12:39:11,024 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 18 variables, input treesize:136, output treesize:3 [2019-12-07 12:39:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:39:11,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 12:39:11,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2019-12-07 12:39:11,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878880920] [2019-12-07 12:39:11,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-12-07 12:39:11,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:39:11,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-12-07 12:39:11,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-12-07 12:39:11,028 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 11 states. [2019-12-07 12:39:51,845 WARN L192 SmtUtils]: Spent 40.70 s on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2019-12-07 12:40:04,074 WARN L192 SmtUtils]: Spent 12.06 s on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2019-12-07 12:40:16,177 WARN L192 SmtUtils]: Spent 12.07 s on a formula simplification. DAG size of input: 115 DAG size of output: 85 [2019-12-07 12:40:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:40:16,246 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2019-12-07 12:40:16,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 12:40:16,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-12-07 12:40:16,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:40:16,248 INFO L225 Difference]: With dead ends: 60 [2019-12-07 12:40:16,248 INFO L226 Difference]: Without dead ends: 58 [2019-12-07 12:40:16,248 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 95.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-12-07 12:40:16,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-12-07 12:40:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 19. [2019-12-07 12:40:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 12:40:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-12-07 12:40:16,252 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2019-12-07 12:40:16,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:40:16,252 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-12-07 12:40:16,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-12-07 12:40:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-12-07 12:40:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 12:40:16,253 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:40:16,253 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:40:16,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 12:40:16,454 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:40:16,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:40:16,454 INFO L82 PathProgramCache]: Analyzing trace with hash -839217458, now seen corresponding path program 1 times [2019-12-07 12:40:16,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:40:16,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593136296] [2019-12-07 12:40:16,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:40:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:40:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:40:16,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593136296] [2019-12-07 12:40:16,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:40:16,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 12:40:16,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809642611] [2019-12-07 12:40:16,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 12:40:16,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:40:16,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 12:40:16,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:40:16,514 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-12-07 12:40:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:40:16,577 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-12-07 12:40:16,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:40:16,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-12-07 12:40:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:40:16,577 INFO L225 Difference]: With dead ends: 35 [2019-12-07 12:40:16,577 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 12:40:16,578 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 12:40:16,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 12:40:16,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2019-12-07 12:40:16,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 12:40:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-12-07 12:40:16,580 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2019-12-07 12:40:16,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:40:16,580 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-12-07 12:40:16,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 12:40:16,581 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-12-07 12:40:16,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 12:40:16,581 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:40:16,581 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:40:16,581 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 12:40:16,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:40:16,581 INFO L82 PathProgramCache]: Analyzing trace with hash -839157876, now seen corresponding path program 1 times [2019-12-07 12:40:16,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:40:16,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879168033] [2019-12-07 12:40:16,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:40:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:40:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:40:16,607 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:40:16,607 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:40:16,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:40:16 BoogieIcfgContainer [2019-12-07 12:40:16,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:40:16,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:40:16,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:40:16,624 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:40:16,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:38:39" (3/4) ... [2019-12-07 12:40:16,626 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 12:40:16,656 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_26e2efb6-d113-4398-b38a-2a6f232bee78/bin/uautomizer/witness.graphml [2019-12-07 12:40:16,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:40:16,657 INFO L168 Benchmark]: Toolchain (without parser) took 97829.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 932.6 MB in the beginning and 967.3 MB in the end (delta: -34.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:40:16,657 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:40:16,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-07 12:40:16,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.82 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. [2019-12-07 12:40:16,658 INFO L168 Benchmark]: Boogie Preprocessor took 21.10 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:40:16,659 INFO L168 Benchmark]: RCFGBuilder took 273.50 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-12-07 12:40:16,659 INFO L168 Benchmark]: TraceAbstraction took 97159.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 974.1 MB in the end (delta: 82.3 MB). Peak memory consumption was 82.3 MB. Max. memory is 11.5 GB. [2019-12-07 12:40:16,659 INFO L168 Benchmark]: Witness Printer took 31.74 ms. Allocated memory is still 1.1 GB. Free memory was 974.1 MB in the beginning and 967.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:40:16,661 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 308.22 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.82 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. * Boogie Preprocessor took 21.10 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 273.50 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 97159.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 974.1 MB in the end (delta: 82.3 MB). Peak memory consumption was 82.3 MB. Max. memory is 11.5 GB. * Witness Printer took 31.74 ms. Allocated memory is still 1.1 GB. Free memory was 974.1 MB in the beginning and 967.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1040]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* list = malloc(sizeof(SLL)); [L995] list->next = ((void*)0) [L996] list->prev = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end = ((void*)0) [L1026] end = list [L1029] COND FALSE !(!(((void*)0) != end)) [L1030] EXPR end->colour [L1030] COND FALSE !(!(BLACK == end->colour)) [L1032] COND TRUE ((void*)0) != end [L1034] EXPR end->colour [L1034] COND FALSE !(RED == end->colour) [L1040] EXPR end->next [L1040] COND TRUE !(end->next) [L1040] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 3 error locations. Result: UNSAFE, OverallTime: 97.1s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 65.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 152 SDslu, 202 SDs, 0 SdLazy, 206 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 95.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 70 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 31.1s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 58 ConstructedInterpolants, 6 QuantifiedInterpolants, 12720 SizeOfPredicates, 13 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...