./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test21-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test21-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34ee7183d8669d8a5837b9fc7867e46ccee92ce8 ..................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-25 22:05:08,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:05:08,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:05:08,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:05:08,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:05:08,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:05:08,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:05:08,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:05:08,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:05:08,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:05:08,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:05:08,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:05:08,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:05:08,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:05:08,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:05:08,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:05:08,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:05:08,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:05:08,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:05:08,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:05:08,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:05:08,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:05:08,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:05:08,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:05:08,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:05:08,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:05:08,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:05:08,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:05:08,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:05:08,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:05:08,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:05:08,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:05:08,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:05:08,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:05:08,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:05:08,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:05:08,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:05:08,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:05:08,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:05:08,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:05:08,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:05:08,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:05:08,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:05:08,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:05:08,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:05:08,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:05:08,682 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:05:08,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:05:08,683 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:05:08,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:05:08,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:05:08,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:05:08,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:05:08,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:05:08,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:05:08,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:05:08,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:05:08,686 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:05:08,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:05:08,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:05:08,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:05:08,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:05:08,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:05:08,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:05:08,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:05:08,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:05:08,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:05:08,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:05:08,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:05:08,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:05:08,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:05:08,690 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ee7183d8669d8a5837b9fc7867e46ccee92ce8 [2020-10-25 22:05:09,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:05:09,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:05:09,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:05:09,146 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:05:09,149 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:05:09,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test21-2.c [2020-10-25 22:05:09,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fcb161e1/36653a68f8284922b28905003f2b7d0f/FLAG169e36501 [2020-10-25 22:05:09,748 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:05:09,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test21-2.c [2020-10-25 22:05:09,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fcb161e1/36653a68f8284922b28905003f2b7d0f/FLAG169e36501 [2020-10-25 22:05:10,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fcb161e1/36653a68f8284922b28905003f2b7d0f [2020-10-25 22:05:10,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:05:10,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:05:10,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:05:10,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:05:10,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:05:10,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:05:10" (1/1) ... [2020-10-25 22:05:10,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20aaac85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10, skipping insertion in model container [2020-10-25 22:05:10,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:05:10" (1/1) ... [2020-10-25 22:05:10,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:05:10,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:05:10,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:05:10,387 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:05:10,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:05:10,424 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:05:10,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10 WrapperNode [2020-10-25 22:05:10,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:05:10,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:05:10,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:05:10,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:05:10,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10" (1/1) ... [2020-10-25 22:05:10,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10" (1/1) ... [2020-10-25 22:05:10,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:05:10,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:05:10,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:05:10,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:05:10,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10" (1/1) ... [2020-10-25 22:05:10,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10" (1/1) ... [2020-10-25 22:05:10,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10" (1/1) ... [2020-10-25 22:05:10,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10" (1/1) ... [2020-10-25 22:05:10,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10" (1/1) ... [2020-10-25 22:05:10,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10" (1/1) ... [2020-10-25 22:05:10,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10" (1/1) ... [2020-10-25 22:05:10,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:05:10,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:05:10,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:05:10,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:05:10,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:05:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:05:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:05:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:05:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:05:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:05:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:05:10,827 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:05:10,827 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-25 22:05:10,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:05:10 BoogieIcfgContainer [2020-10-25 22:05:10,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:05:10,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:05:10,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:05:10,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:05:10,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:05:10" (1/3) ... [2020-10-25 22:05:10,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c862b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:05:10, skipping insertion in model container [2020-10-25 22:05:10,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:05:10" (2/3) ... [2020-10-25 22:05:10,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c862b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:05:10, skipping insertion in model container [2020-10-25 22:05:10,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:05:10" (3/3) ... [2020-10-25 22:05:10,838 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-2.c [2020-10-25 22:05:10,850 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:05:10,855 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:05:10,884 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:05:10,947 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:05:10,947 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:05:10,948 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:05:10,948 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:05:10,948 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:05:10,948 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:05:10,949 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:05:10,949 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:05:10,963 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-25 22:05:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 22:05:10,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:05:10,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:05:10,972 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:05:10,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:05:10,979 INFO L82 PathProgramCache]: Analyzing trace with hash 167538580, now seen corresponding path program 1 times [2020-10-25 22:05:10,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:05:10,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734070417] [2020-10-25 22:05:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:05:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:05:11,170 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:05:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:05:11,225 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:05:11,273 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:05:11,274 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:05:11,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:05:11,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:05:11 BoogieIcfgContainer [2020-10-25 22:05:11,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:05:11,324 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:05:11,324 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:05:11,324 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:05:11,325 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:05:10" (3/4) ... [2020-10-25 22:05:11,327 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:05:11,380 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:05:11,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:05:11,383 INFO L168 Benchmark]: Toolchain (without parser) took 1256.70 ms. Allocated memory was 44.0 MB in the beginning and 60.8 MB in the end (delta: 16.8 MB). Free memory was 21.1 MB in the beginning and 33.8 MB in the end (delta: -12.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:11,384 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.7 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:05:11,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.24 ms. Allocated memory was 44.0 MB in the beginning and 60.8 MB in the end (delta: 16.8 MB). Free memory was 20.4 MB in the beginning and 36.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:11,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.66 ms. Allocated memory is still 60.8 MB. Free memory was 36.7 MB in the beginning and 35.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:11,387 INFO L168 Benchmark]: Boogie Preprocessor took 24.36 ms. Allocated memory is still 60.8 MB. Free memory was 35.2 MB in the beginning and 34.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:05:11,388 INFO L168 Benchmark]: RCFGBuilder took 336.43 ms. Allocated memory is still 60.8 MB. Free memory was 34.0 MB in the beginning and 34.7 MB in the end (delta: -667.8 kB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:11,389 INFO L168 Benchmark]: TraceAbstraction took 492.29 ms. Allocated memory is still 60.8 MB. Free memory was 34.1 MB in the beginning and 36.2 MB in the end (delta: -2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:05:11,390 INFO L168 Benchmark]: Witness Printer took 56.49 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 33.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:05:11,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 23.8 MB in the beginning and 23.7 MB in the end (delta: 52.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.24 ms. Allocated memory was 44.0 MB in the beginning and 60.8 MB in the end (delta: 16.8 MB). Free memory was 20.4 MB in the beginning and 36.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.66 ms. Allocated memory is still 60.8 MB. Free memory was 36.7 MB in the beginning and 35.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.36 ms. Allocated memory is still 60.8 MB. Free memory was 35.2 MB in the beginning and 34.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 336.43 ms. Allocated memory is still 60.8 MB. Free memory was 34.0 MB in the beginning and 34.7 MB in the end (delta: -667.8 kB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 492.29 ms. Allocated memory is still 60.8 MB. Free memory was 34.1 MB in the beginning and 36.2 MB in the end (delta: -2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 56.49 ms. Allocated memory is still 60.8 MB. Free memory was 36.2 MB in the beginning and 33.8 MB in the end (delta: 2.4 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: [L11] struct dummy d1, d2; VAL [d1={5:0}, d2={9:0}] [L15] d1.a = __VERIFIER_nondet_int() [L16] d1.b = __VERIFIER_nondet_int() [L18] d2.a = __VERIFIER_nondet_int() [L19] d2.b = __VERIFIER_nondet_int() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={5:0}, d2={9:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={5:0}, d2={9:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L36] COND TRUE pd1 != 0 && pd1 == pd2 [L29] EXPR s1->a [L29] EXPR s2->b [L29] return s1->a == s2->b; [L37] COND TRUE !check(pd1, pd2) [L3] __assert_fail("0", "test21-2.c", 3, "reach_error") VAL [d1={5:0}, d2={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...