./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/alt_test.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/alt_test.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0dc10cff0d4b9b6abcb3203593853156d0ff603 ....................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-29 20:24:41,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:24:41,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:24:41,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:24:41,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:24:41,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:24:41,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:24:41,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:24:41,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:24:41,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:24:41,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:24:41,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:24:41,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:24:41,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:24:41,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:24:41,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:24:41,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:24:41,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:24:41,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:24:41,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:24:41,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:24:41,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:24:41,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:24:41,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:24:41,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:24:41,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:24:41,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:24:41,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:24:41,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:24:41,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:24:41,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:24:41,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:24:41,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:24:41,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:24:41,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:24:41,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:24:41,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:24:41,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:24:41,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:24:41,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:24:41,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:24:41,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:24:41,433 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:24:41,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:24:41,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:24:41,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:24:41,444 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:24:41,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:24:41,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:24:41,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:24:41,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:24:41,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:24:41,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:24:41,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:24:41,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:24:41,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:24:41,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:24:41,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:24:41,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:24:41,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:24:41,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:24:41,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:24:41,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:24:41,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:24:41,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:24:41,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:24:41,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:24:41,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:24:41,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:24:41,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:24:41,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:24:41,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0dc10cff0d4b9b6abcb3203593853156d0ff603 [2020-11-29 20:24:41,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:24:41,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:24:41,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:24:41,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:24:41,737 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:24:41,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/alt_test.i [2020-11-29 20:24:41,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/data/e12024a7b/cb238e7c28df434da1372cde9f1ded99/FLAGfd8788c96 [2020-11-29 20:24:42,300 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:24:42,301 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/sv-benchmarks/c/ldv-regression/alt_test.i [2020-11-29 20:24:42,328 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/data/e12024a7b/cb238e7c28df434da1372cde9f1ded99/FLAGfd8788c96 [2020-11-29 20:24:42,604 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/data/e12024a7b/cb238e7c28df434da1372cde9f1ded99 [2020-11-29 20:24:42,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:24:42,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:24:42,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:24:42,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:24:42,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:24:42,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:24:42" (1/1) ... [2020-11-29 20:24:42,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bd182e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:42, skipping insertion in model container [2020-11-29 20:24:42,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:24:42" (1/1) ... [2020-11-29 20:24:42,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:24:42,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:24:43,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:24:43,015 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:24:43,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:24:43,111 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:24:43,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43 WrapperNode [2020-11-29 20:24:43,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:24:43,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:24:43,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:24:43,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:24:43,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43" (1/1) ... [2020-11-29 20:24:43,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43" (1/1) ... [2020-11-29 20:24:43,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:24:43,153 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:24:43,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:24:43,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:24:43,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43" (1/1) ... [2020-11-29 20:24:43,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43" (1/1) ... [2020-11-29 20:24:43,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43" (1/1) ... [2020-11-29 20:24:43,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43" (1/1) ... [2020-11-29 20:24:43,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43" (1/1) ... [2020-11-29 20:24:43,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43" (1/1) ... [2020-11-29 20:24:43,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43" (1/1) ... [2020-11-29 20:24:43,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:24:43,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:24:43,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:24:43,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:24:43,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/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 [2020-11-29 20:24:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 20:24:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:24:43,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:24:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:24:43,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:24:43,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:24:43,678 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:24:43,679 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 20:24:43,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:24:43 BoogieIcfgContainer [2020-11-29 20:24:43,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:24:43,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:24:43,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:24:43,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:24:43,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:24:42" (1/3) ... [2020-11-29 20:24:43,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c0b4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:24:43, skipping insertion in model container [2020-11-29 20:24:43,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:24:43" (2/3) ... [2020-11-29 20:24:43,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c0b4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:24:43, skipping insertion in model container [2020-11-29 20:24:43,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:24:43" (3/3) ... [2020-11-29 20:24:43,690 INFO L111 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-11-29 20:24:43,700 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:24:43,704 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 20:24:43,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 20:24:43,746 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:24:43,746 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:24:43,746 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:24:43,747 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:24:43,747 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:24:43,747 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:24:43,747 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:24:43,747 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:24:43,760 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-29 20:24:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:24:43,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:24:43,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:24:43,766 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:24:43,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:24:43,783 INFO L82 PathProgramCache]: Analyzing trace with hash 119352108, now seen corresponding path program 1 times [2020-11-29 20:24:43,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:24:43,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882613849] [2020-11-29 20:24:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:24:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:24:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:24:43,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882613849] [2020-11-29 20:24:43,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:24:43,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:24:43,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416947743] [2020-11-29 20:24:43,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:24:43,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:24:43,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:24:43,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:24:43,968 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-11-29 20:24:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:24:44,042 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2020-11-29 20:24:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:24:44,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 20:24:44,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:24:44,054 INFO L225 Difference]: With dead ends: 41 [2020-11-29 20:24:44,055 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 20:24:44,068 INFO L677 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 [2020-11-29 20:24:44,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 20:24:44,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-11-29 20:24:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 20:24:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-29 20:24:44,099 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2020-11-29 20:24:44,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:24:44,100 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-29 20:24:44,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:24:44,100 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-29 20:24:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:24:44,101 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:24:44,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:24:44,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:24:44,101 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:24:44,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:24:44,103 INFO L82 PathProgramCache]: Analyzing trace with hash 176610410, now seen corresponding path program 1 times [2020-11-29 20:24:44,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:24:44,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354952175] [2020-11-29 20:24:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:24:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:24:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:24:44,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354952175] [2020-11-29 20:24:44,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:24:44,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:24:44,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081499502] [2020-11-29 20:24:44,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:24:44,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:24:44,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:24:44,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:24:44,173 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2020-11-29 20:24:44,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:24:44,180 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-29 20:24:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:24:44,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 20:24:44,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:24:44,181 INFO L225 Difference]: With dead ends: 25 [2020-11-29 20:24:44,181 INFO L226 Difference]: Without dead ends: 13 [2020-11-29 20:24:44,182 INFO L677 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 [2020-11-29 20:24:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-29 20:24:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-29 20:24:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 20:24:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-29 20:24:44,185 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2020-11-29 20:24:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:24:44,186 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-29 20:24:44,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:24:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-29 20:24:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:24:44,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:24:44,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:24:44,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:24:44,187 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:24:44,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:24:44,188 INFO L82 PathProgramCache]: Analyzing trace with hash -202942197, now seen corresponding path program 1 times [2020-11-29 20:24:44,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:24:44,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774894048] [2020-11-29 20:24:44,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:24:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:24:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:24:44,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774894048] [2020-11-29 20:24:44,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:24:44,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:24:44,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637343297] [2020-11-29 20:24:44,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:24:44,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:24:44,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:24:44,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:24:44,268 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-11-29 20:24:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:24:44,319 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-11-29 20:24:44,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:24:44,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 20:24:44,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:24:44,320 INFO L225 Difference]: With dead ends: 19 [2020-11-29 20:24:44,320 INFO L226 Difference]: Without dead ends: 13 [2020-11-29 20:24:44,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:24:44,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-29 20:24:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-29 20:24:44,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 20:24:44,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-11-29 20:24:44,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 11 [2020-11-29 20:24:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:24:44,324 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-11-29 20:24:44,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:24:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-11-29 20:24:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:24:44,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:24:44,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:24:44,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:24:44,325 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:24:44,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:24:44,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1910510660, now seen corresponding path program 1 times [2020-11-29 20:24:44,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:24:44,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612107248] [2020-11-29 20:24:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:24:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:24:44,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:24:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:24:44,371 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:24:44,393 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:24:44,393 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:24:44,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:24:44,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:24:44 BoogieIcfgContainer [2020-11-29 20:24:44,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:24:44,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:24:44,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:24:44,427 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:24:44,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:24:43" (3/4) ... [2020-11-29 20:24:44,434 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:24:44,491 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a2c9569d-54dc-4714-91d1-f493e544ce19/bin/uautomizer/witness.graphml [2020-11-29 20:24:44,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:24:44,493 INFO L168 Benchmark]: Toolchain (without parser) took 1884.20 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 58.6 MB in the beginning and 60.9 MB in the end (delta: -2.3 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:44,494 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:24:44,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 499.07 ms. Allocated memory is still 96.5 MB. Free memory was 58.5 MB in the beginning and 61.1 MB in the end (delta: -2.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:44,495 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.07 ms. Allocated memory is still 96.5 MB. Free memory was 61.1 MB in the beginning and 59.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:44,495 INFO L168 Benchmark]: Boogie Preprocessor took 22.10 ms. Allocated memory is still 96.5 MB. Free memory was 59.6 MB in the beginning and 58.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:44,496 INFO L168 Benchmark]: RCFGBuilder took 504.35 ms. Allocated memory is still 96.5 MB. Free memory was 58.1 MB in the beginning and 42.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:44,505 INFO L168 Benchmark]: TraceAbstraction took 744.01 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 42.5 MB in the beginning and 63.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:44,505 INFO L168 Benchmark]: Witness Printer took 64.89 ms. Allocated memory is still 119.5 MB. Free memory was 63.8 MB in the beginning and 60.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:24:44,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory is still 76.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 499.07 ms. Allocated memory is still 96.5 MB. Free memory was 58.5 MB in the beginning and 61.1 MB in the end (delta: -2.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.07 ms. Allocated memory is still 96.5 MB. Free memory was 61.1 MB in the beginning and 59.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.10 ms. Allocated memory is still 96.5 MB. Free memory was 59.6 MB in the beginning and 58.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 504.35 ms. Allocated memory is still 96.5 MB. Free memory was 58.1 MB in the beginning and 42.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 744.01 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 42.5 MB in the beginning and 63.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Witness Printer took 64.89 ms. Allocated memory is still 119.5 MB. Free memory was 63.8 MB in the beginning and 60.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L518] int globalState = 0; VAL [globalState=0] [L529] void *retVal = malloc(size); VAL [globalState=0] [L530] COND TRUE retVal != ((void *)0) [L531] globalState=1 VAL [globalState=1] [L532] return retVal; VAL [globalState=1] [L523] int *a = (int*) l_malloc(sizeof(int)); [L535] COND TRUE ptr!=((void *)0) VAL [globalState=1] [L535] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=1] [L536] globalState = 0 [L535] COND TRUE ptr!=((void *)0) VAL [globalState=0] [L535] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=0] [L3] __assert_fail("0", "alt_test.i", 3, "reach_error") VAL [globalState=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 33 SDslu, 21 SDs, 0 SdLazy, 20 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...