./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22-2.c --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_6053a667-7047-4254-843a-62499aecd6e6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/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 54c9c3f123e280a35d761deadfd537de0a28f053 .................................................................................................................................................................................................................................................................................................................................... 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 15:29:35,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:29:35,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:29:35,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:29:35,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:29:35,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:29:35,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:29:35,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:29:35,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:29:35,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:29:35,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:29:35,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:29:35,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:29:35,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:29:35,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:29:35,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:29:35,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:29:35,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:29:35,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:29:35,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:29:35,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:29:35,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:29:35,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:29:35,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:29:35,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:29:35,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:29:35,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:29:35,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:29:35,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:29:35,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:29:35,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:29:35,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:29:35,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:29:35,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:29:35,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:29:35,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:29:35,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:29:35,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:29:35,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:29:35,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:29:35,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:29:35,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:29:35,073 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:29:35,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:29:35,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:29:35,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:29:35,074 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:29:35,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:29:35,074 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:29:35,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:29:35,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:29:35,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:29:35,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:29:35,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:29:35,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:29:35,075 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:29:35,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:29:35,076 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:29:35,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:29:35,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:29:35,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:29:35,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:29:35,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:29:35,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:29:35,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:29:35,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:29:35,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:29:35,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:29:35,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:29:35,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:29:35,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:29:35,077 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_6053a667-7047-4254-843a-62499aecd6e6/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 -> 54c9c3f123e280a35d761deadfd537de0a28f053 [2019-12-07 15:29:35,175 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:29:35,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:29:35,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:29:35,187 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:29:35,187 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:29:35,188 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/test22-2.c [2019-12-07 15:29:35,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/bin/uautomizer/data/37d80ce4a/ffcb05226ad7446ea10fd5c180c8bf7e/FLAGd2a8211b5 [2019-12-07 15:29:35,560 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:29:35,561 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/sv-benchmarks/c/ldv-regression/test22-2.c [2019-12-07 15:29:35,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/bin/uautomizer/data/37d80ce4a/ffcb05226ad7446ea10fd5c180c8bf7e/FLAGd2a8211b5 [2019-12-07 15:29:35,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/bin/uautomizer/data/37d80ce4a/ffcb05226ad7446ea10fd5c180c8bf7e [2019-12-07 15:29:35,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:29:35,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:29:35,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:29:35,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:29:35,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:29:35,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:29:35" (1/1) ... [2019-12-07 15:29:35,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2793e68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35, skipping insertion in model container [2019-12-07 15:29:35,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:29:35" (1/1) ... [2019-12-07 15:29:35,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:29:35,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:29:35,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:29:35,738 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:29:35,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:29:35,761 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:29:35,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35 WrapperNode [2019-12-07 15:29:35,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:29:35,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:29:35,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:29:35,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:29:35,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35" (1/1) ... [2019-12-07 15:29:35,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35" (1/1) ... [2019-12-07 15:29:35,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:29:35,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:29:35,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:29:35,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:29:35,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35" (1/1) ... [2019-12-07 15:29:35,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35" (1/1) ... [2019-12-07 15:29:35,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35" (1/1) ... [2019-12-07 15:29:35,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35" (1/1) ... [2019-12-07 15:29:35,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35" (1/1) ... [2019-12-07 15:29:35,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35" (1/1) ... [2019-12-07 15:29:35,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35" (1/1) ... [2019-12-07 15:29:35,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:29:35,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:29:35,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:29:35,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:29:35,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/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 15:29:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-07 15:29:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:29:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:29:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:29:35,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:29:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:29:35,997 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:29:35,998 INFO L287 CfgBuilder]: Removed 15 assume(true) statements. [2019-12-07 15:29:35,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:29:35 BoogieIcfgContainer [2019-12-07 15:29:35,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:29:35,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:29:35,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:29:36,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:29:36,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:29:35" (1/3) ... [2019-12-07 15:29:36,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf59f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:29:36, skipping insertion in model container [2019-12-07 15:29:36,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:29:35" (2/3) ... [2019-12-07 15:29:36,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf59f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:29:36, skipping insertion in model container [2019-12-07 15:29:36,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:29:35" (3/3) ... [2019-12-07 15:29:36,003 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2019-12-07 15:29:36,009 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:29:36,013 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:29:36,020 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:29:36,035 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:29:36,035 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:29:36,035 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:29:36,035 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:29:36,035 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:29:36,035 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:29:36,035 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:29:36,035 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:29:36,045 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-12-07 15:29:36,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 15:29:36,049 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:29:36,049 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:29:36,049 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:29:36,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:29:36,054 INFO L82 PathProgramCache]: Analyzing trace with hash 164664103, now seen corresponding path program 1 times [2019-12-07 15:29:36,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:29:36,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375307960] [2019-12-07 15:29:36,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:29:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:29:36,170 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 15:29:36,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375307960] [2019-12-07 15:29:36,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:29:36,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:29:36,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964249914] [2019-12-07 15:29:36,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:29:36,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:29:36,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:29:36,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:29:36,184 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-12-07 15:29:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:29:36,195 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-12-07 15:29:36,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:29:36,196 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-12-07 15:29:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:29:36,202 INFO L225 Difference]: With dead ends: 34 [2019-12-07 15:29:36,202 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 15:29:36,204 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 15:29:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 15:29:36,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-07 15:29:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 15:29:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-12-07 15:29:36,225 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2019-12-07 15:29:36,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:29:36,226 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-12-07 15:29:36,226 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:29:36,226 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-12-07 15:29:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 15:29:36,226 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:29:36,226 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:29:36,227 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:29:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:29:36,227 INFO L82 PathProgramCache]: Analyzing trace with hash 603612068, now seen corresponding path program 1 times [2019-12-07 15:29:36,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:29:36,227 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794327202] [2019-12-07 15:29:36,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:29:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:29:36,364 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 15:29:36,365 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794327202] [2019-12-07 15:29:36,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:29:36,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-12-07 15:29:36,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102679007] [2019-12-07 15:29:36,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 15:29:36,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:29:36,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 15:29:36,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-12-07 15:29:36,368 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 10 states. [2019-12-07 15:29:36,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:29:36,601 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2019-12-07 15:29:36,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 15:29:36,602 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-12-07 15:29:36,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:29:36,603 INFO L225 Difference]: With dead ends: 71 [2019-12-07 15:29:36,603 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 15:29:36,604 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-12-07 15:29:36,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 15:29:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 33. [2019-12-07 15:29:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 15:29:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-12-07 15:29:36,610 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 20 [2019-12-07 15:29:36,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:29:36,610 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-12-07 15:29:36,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 15:29:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-12-07 15:29:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 15:29:36,611 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:29:36,611 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:29:36,611 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:29:36,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:29:36,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1304676646, now seen corresponding path program 1 times [2019-12-07 15:29:36,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:29:36,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222767512] [2019-12-07 15:29:36,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:29:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:29:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:29:36,681 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:29:36,681 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:29:36,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:29:36 BoogieIcfgContainer [2019-12-07 15:29:36,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:29:36,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:29:36,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:29:36,707 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:29:36,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:29:35" (3/4) ... [2019-12-07 15:29:36,709 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:29:36,743 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6053a667-7047-4254-843a-62499aecd6e6/bin/uautomizer/witness.graphml [2019-12-07 15:29:36,743 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:29:36,745 INFO L168 Benchmark]: Toolchain (without parser) took 1169.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 945.1 MB in the beginning and 980.2 MB in the end (delta: -35.0 MB). Peak memory consumption was 71.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:29:36,745 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:29:36,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -155.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:29:36,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.87 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 15:29:36,746 INFO L168 Benchmark]: Boogie Preprocessor took 17.50 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:29:36,746 INFO L168 Benchmark]: RCFGBuilder took 192.57 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:29:36,747 INFO L168 Benchmark]: TraceAbstraction took 707.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 985.6 MB in the end (delta: 87.8 MB). Peak memory consumption was 87.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:29:36,747 INFO L168 Benchmark]: Witness Printer took 36.69 ms. Allocated memory is still 1.1 GB. Free memory was 985.6 MB in the beginning and 980.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:29:36,749 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 186.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -155.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.87 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 17.50 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 192.57 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 707.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 985.6 MB in the end (delta: 87.8 MB). Peak memory consumption was 87.8 MB. Max. memory is 11.5 GB. * Witness Printer took 36.69 ms. Allocated memory is still 1.1 GB. Free memory was 985.6 MB in the beginning and 980.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [d1={2:0}, d2={3:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={3:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={3:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={3:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [d1={2:0}, d2={3:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L38] COND FALSE !(i < *pa) [L27] EXPR s1->a [L27] return s1->a == i; [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={2:0}, d2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 59 SDslu, 139 SDs, 0 SdLazy, 138 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, 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, 2 MinimizatonAttempts, 33 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 2053 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...