./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0158-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ff03de63 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0158-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:04:16,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:04:16,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:04:16,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:04:16,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:04:16,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:04:16,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:04:16,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:04:16,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:04:16,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:04:16,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:04:16,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:04:16,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:04:16,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:04:16,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:04:16,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:04:16,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:04:16,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:04:16,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:04:16,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:04:16,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:04:16,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:04:16,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:04:16,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:04:16,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:04:16,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:04:16,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:04:16,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:04:16,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:04:16,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:04:16,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:04:16,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:04:16,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:04:16,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:04:16,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:04:16,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:04:16,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:04:16,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:04:16,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:04:16,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:04:16,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:04:16,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-21 18:04:16,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:04:16,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:04:16,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:04:16,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:04:16,680 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:04:16,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:04:16,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:04:16,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:04:16,681 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:04:16,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:04:16,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:04:16,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:04:16,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:04:16,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:04:16,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:04:16,683 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:04:16,683 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:04:16,683 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:04:16,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:04:16,683 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:04:16,683 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:04:16,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:04:16,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:04:16,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:04:16,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:04:16,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:04:16,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:04:16,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:04:16,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 18:04:16,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 18:04:16,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:04:16,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 [2021-12-21 18:04:16,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:04:16,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:04:16,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:04:16,916 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:04:16,916 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:04:16,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-2.i [2021-12-21 18:04:16,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4803021ad/517a66901d494ed39569ed0ca71b05b3/FLAG30f81e985 [2021-12-21 18:04:17,340 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:04:17,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-2.i [2021-12-21 18:04:17,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4803021ad/517a66901d494ed39569ed0ca71b05b3/FLAG30f81e985 [2021-12-21 18:04:17,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4803021ad/517a66901d494ed39569ed0ca71b05b3 [2021-12-21 18:04:17,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:04:17,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:04:17,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:04:17,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:04:17,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:04:17,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:04:17" (1/1) ... [2021-12-21 18:04:17,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f7b7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:17, skipping insertion in model container [2021-12-21 18:04:17,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:04:17" (1/1) ... [2021-12-21 18:04:17,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:04:17,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:04:18,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:04:18,040 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 18:04:18,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:04:18,099 INFO L208 MainTranslator]: Completed translation [2021-12-21 18:04:18,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18 WrapperNode [2021-12-21 18:04:18,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:04:18,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 18:04:18,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 18:04:18,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 18:04:18,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18" (1/1) ... [2021-12-21 18:04:18,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18" (1/1) ... [2021-12-21 18:04:18,146 INFO L137 Inliner]: procedures = 123, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-12-21 18:04:18,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 18:04:18,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 18:04:18,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 18:04:18,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 18:04:18,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18" (1/1) ... [2021-12-21 18:04:18,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18" (1/1) ... [2021-12-21 18:04:18,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18" (1/1) ... [2021-12-21 18:04:18,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18" (1/1) ... [2021-12-21 18:04:18,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18" (1/1) ... [2021-12-21 18:04:18,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18" (1/1) ... [2021-12-21 18:04:18,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18" (1/1) ... [2021-12-21 18:04:18,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 18:04:18,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 18:04:18,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 18:04:18,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 18:04:18,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18" (1/1) ... [2021-12-21 18:04:18,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:04:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:04:18,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 18:04:18,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 18:04:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 18:04:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 18:04:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 18:04:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 18:04:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 18:04:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 18:04:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 18:04:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 18:04:18,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 18:04:18,338 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 18:04:18,339 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 18:04:18,444 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 18:04:18,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 18:04:18,449 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 18:04:18,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:04:18 BoogieIcfgContainer [2021-12-21 18:04:18,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 18:04:18,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 18:04:18,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 18:04:18,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 18:04:18,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:04:17" (1/3) ... [2021-12-21 18:04:18,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655c4789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:04:18, skipping insertion in model container [2021-12-21 18:04:18,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:18" (2/3) ... [2021-12-21 18:04:18,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655c4789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:04:18, skipping insertion in model container [2021-12-21 18:04:18,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:04:18" (3/3) ... [2021-12-21 18:04:18,458 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2021-12-21 18:04:18,461 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 18:04:18,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-21 18:04:18,487 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 18:04:18,491 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 18:04:18,491 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-21 18:04:18,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 18:04:18,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:04:18,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 18:04:18,504 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-21 18:04:18,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:04:18,507 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-21 18:04:18,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:04:18,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075214421] [2021-12-21 18:04:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:04:18,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:04:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:04:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:04:18,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:04:18,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075214421] [2021-12-21 18:04:18,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075214421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:04:18,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:04:18,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:04:18,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810404622] [2021-12-21 18:04:18,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:04:18,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:04:18,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:04:18,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:04:18,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:04:18,680 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:04:18,717 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-12-21 18:04:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:04:18,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-21 18:04:18,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:04:18,725 INFO L225 Difference]: With dead ends: 14 [2021-12-21 18:04:18,725 INFO L226 Difference]: Without dead ends: 12 [2021-12-21 18:04:18,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:04:18,729 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:04:18,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 7 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:04:18,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-21 18:04:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-21 18:04:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-12-21 18:04:18,748 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 3 [2021-12-21 18:04:18,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:04:18,748 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-12-21 18:04:18,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:18,749 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-12-21 18:04:18,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 18:04:18,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:04:18,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 18:04:18,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 18:04:18,750 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-21 18:04:18,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:04:18,752 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-21 18:04:18,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:04:18,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430771939] [2021-12-21 18:04:18,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:04:18,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:04:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:04:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:04:18,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:04:18,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430771939] [2021-12-21 18:04:18,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430771939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:04:18,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:04:18,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:04:18,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220234140] [2021-12-21 18:04:18,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:04:18,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:04:18,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:04:18,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:04:18,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:04:18,822 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:18,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:04:18,841 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-12-21 18:04:18,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:04:18,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-21 18:04:18,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:04:18,842 INFO L225 Difference]: With dead ends: 9 [2021-12-21 18:04:18,842 INFO L226 Difference]: Without dead ends: 9 [2021-12-21 18:04:18,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:04:18,846 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:04:18,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:04:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-21 18:04:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-21 18:04:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-12-21 18:04:18,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 3 [2021-12-21 18:04:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:04:18,851 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-12-21 18:04:18,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:18,851 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-12-21 18:04:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 18:04:18,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:04:18,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:04:18,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 18:04:18,854 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-21 18:04:18,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:04:18,855 INFO L85 PathProgramCache]: Analyzing trace with hash 59200043, now seen corresponding path program 1 times [2021-12-21 18:04:18,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:04:18,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034434332] [2021-12-21 18:04:18,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:04:18,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:04:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 18:04:18,897 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 18:04:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 18:04:18,945 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 18:04:18,946 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 18:04:18,946 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2021-12-21 18:04:18,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (5 of 7 remaining) [2021-12-21 18:04:18,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (4 of 7 remaining) [2021-12-21 18:04:18,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (3 of 7 remaining) [2021-12-21 18:04:18,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (2 of 7 remaining) [2021-12-21 18:04:18,948 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (1 of 7 remaining) [2021-12-21 18:04:18,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (0 of 7 remaining) [2021-12-21 18:04:18,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 18:04:18,951 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-21 18:04:18,953 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 18:04:18,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:04:18 BoogieIcfgContainer [2021-12-21 18:04:18,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 18:04:18,967 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 18:04:18,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 18:04:18,967 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 18:04:18,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:04:18" (3/4) ... [2021-12-21 18:04:18,970 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 18:04:18,970 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 18:04:18,970 INFO L158 Benchmark]: Toolchain (without parser) took 1252.14ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 77.3MB in the beginning and 81.5MB in the end (delta: -4.2MB). Peak memory consumption was 43.6MB. Max. memory is 16.1GB. [2021-12-21 18:04:18,971 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 107.0MB. Free memory was 62.8MB in the beginning and 62.8MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:04:18,971 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.68ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 77.0MB in the beginning and 126.7MB in the end (delta: -49.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 18:04:18,971 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.53ms. Allocated memory is still 157.3MB. Free memory was 126.7MB in the beginning and 125.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 18:04:18,972 INFO L158 Benchmark]: Boogie Preprocessor took 27.99ms. Allocated memory is still 157.3MB. Free memory was 124.8MB in the beginning and 124.2MB in the end (delta: 578.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:04:18,972 INFO L158 Benchmark]: RCFGBuilder took 274.04ms. Allocated memory is still 157.3MB. Free memory was 124.2MB in the beginning and 113.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 18:04:18,972 INFO L158 Benchmark]: TraceAbstraction took 513.39ms. Allocated memory is still 157.3MB. Free memory was 113.7MB in the beginning and 82.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-12-21 18:04:18,972 INFO L158 Benchmark]: Witness Printer took 3.07ms. Allocated memory is still 157.3MB. Free memory was 82.2MB in the beginning and 81.5MB in the end (delta: 764.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 18:04:18,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 107.0MB. Free memory was 62.8MB in the beginning and 62.8MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 379.68ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 77.0MB in the beginning and 126.7MB in the end (delta: -49.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.53ms. Allocated memory is still 157.3MB. Free memory was 126.7MB in the beginning and 125.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.99ms. Allocated memory is still 157.3MB. Free memory was 124.8MB in the beginning and 124.2MB in the end (delta: 578.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 274.04ms. Allocated memory is still 157.3MB. Free memory was 124.2MB in the beginning and 113.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 513.39ms. Allocated memory is still 157.3MB. Free memory was 113.7MB in the beginning and 82.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 3.07ms. Allocated memory is still 157.3MB. Free memory was 82.2MB in the beginning and 81.5MB in the end (delta: 764.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 523]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 523. Possible FailurePath: [L525-L532] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L533] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L534] data.str.p2 = &data VAL [data={3:0}] [L535] data.str.c[1] = sizeof data.str.p1 VAL [data={3:0}] [L536] return 0; [L536] return 0; VAL [\result=0] - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 10 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-21 18:04:19,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0158-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:04:20,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:04:20,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:04:20,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:04:20,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:04:20,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:04:20,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:04:20,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:04:20,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:04:20,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:04:20,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:04:20,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:04:20,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:04:20,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:04:20,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:04:20,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:04:20,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:04:20,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:04:20,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:04:20,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:04:20,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:04:20,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:04:20,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:04:20,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:04:20,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:04:20,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:04:20,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:04:20,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:04:20,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:04:20,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:04:20,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:04:20,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:04:20,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:04:20,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:04:20,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:04:20,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:04:20,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:04:20,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:04:20,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:04:20,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:04:20,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:04:20,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-21 18:04:20,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:04:20,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:04:20,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:04:20,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:04:20,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:04:20,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:04:20,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:04:20,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:04:20,747 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:04:20,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:04:20,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:04:20,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:04:20,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:04:20,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:04:20,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:04:20,749 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:04:20,749 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:04:20,749 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:04:20,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:04:20,750 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:04:20,750 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 18:04:20,750 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 18:04:20,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:04:20,750 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:04:20,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:04:20,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:04:20,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:04:20,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:04:20,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:04:20,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:04:20,758 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 18:04:20,759 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 18:04:20,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:04:20,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 18:04:20,759 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71b5f65f2f8d87850f90a0c5b95ff806d4054a596ed67d86f7cc490935279607 [2021-12-21 18:04:21,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:04:21,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:04:21,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:04:21,024 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:04:21,025 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:04:21,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-2.i [2021-12-21 18:04:21,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fac2a03f/1c99d437b8c04cb2a5f5682e26175e5b/FLAGacc1a0a00 [2021-12-21 18:04:21,441 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:04:21,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-2.i [2021-12-21 18:04:21,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fac2a03f/1c99d437b8c04cb2a5f5682e26175e5b/FLAGacc1a0a00 [2021-12-21 18:04:21,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fac2a03f/1c99d437b8c04cb2a5f5682e26175e5b [2021-12-21 18:04:21,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:04:21,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:04:21,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:04:21,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:04:21,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:04:21,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:04:21" (1/1) ... [2021-12-21 18:04:21,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5593792d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:21, skipping insertion in model container [2021-12-21 18:04:21,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:04:21" (1/1) ... [2021-12-21 18:04:21,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:04:21,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:04:22,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:04:22,127 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 18:04:22,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:04:22,183 INFO L208 MainTranslator]: Completed translation [2021-12-21 18:04:22,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22 WrapperNode [2021-12-21 18:04:22,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:04:22,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 18:04:22,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 18:04:22,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 18:04:22,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22" (1/1) ... [2021-12-21 18:04:22,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22" (1/1) ... [2021-12-21 18:04:22,213 INFO L137 Inliner]: procedures = 124, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2021-12-21 18:04:22,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 18:04:22,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 18:04:22,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 18:04:22,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 18:04:22,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22" (1/1) ... [2021-12-21 18:04:22,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22" (1/1) ... [2021-12-21 18:04:22,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22" (1/1) ... [2021-12-21 18:04:22,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22" (1/1) ... [2021-12-21 18:04:22,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22" (1/1) ... [2021-12-21 18:04:22,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22" (1/1) ... [2021-12-21 18:04:22,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22" (1/1) ... [2021-12-21 18:04:22,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 18:04:22,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 18:04:22,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 18:04:22,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 18:04:22,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22" (1/1) ... [2021-12-21 18:04:22,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:04:22,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:04:22,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 18:04:22,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 18:04:22,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 18:04:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 18:04:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 18:04:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 18:04:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-21 18:04:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 18:04:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 18:04:22,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 18:04:22,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 18:04:22,389 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 18:04:22,391 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 18:04:22,529 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 18:04:22,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 18:04:22,533 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 18:04:22,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:04:22 BoogieIcfgContainer [2021-12-21 18:04:22,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 18:04:22,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 18:04:22,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 18:04:22,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 18:04:22,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:04:21" (1/3) ... [2021-12-21 18:04:22,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9f89fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:04:22, skipping insertion in model container [2021-12-21 18:04:22,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:04:22" (2/3) ... [2021-12-21 18:04:22,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9f89fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:04:22, skipping insertion in model container [2021-12-21 18:04:22,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:04:22" (3/3) ... [2021-12-21 18:04:22,547 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-2.i [2021-12-21 18:04:22,550 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 18:04:22,550 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-21 18:04:22,577 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 18:04:22,583 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 18:04:22,584 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-21 18:04:22,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:22,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 18:04:22,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:04:22,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 18:04:22,602 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-21 18:04:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:04:22,608 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-21 18:04:22,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:04:22,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704857753] [2021-12-21 18:04:22,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:04:22,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:04:22,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:04:22,633 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:04:22,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 18:04:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:04:22,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:04:22,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:04:22,774 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-21 18:04:22,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-12-21 18:04:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:04:22,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:04:22,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:04:22,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704857753] [2021-12-21 18:04:22,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704857753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:04:22,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:04:22,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:04:22,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540777717] [2021-12-21 18:04:22,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:04:22,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:04:22,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:04:22,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:04:22,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:04:22,835 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:04:22,881 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-12-21 18:04:22,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:04:22,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-21 18:04:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:04:22,888 INFO L225 Difference]: With dead ends: 14 [2021-12-21 18:04:22,888 INFO L226 Difference]: Without dead ends: 12 [2021-12-21 18:04:22,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:04:22,891 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:04:22,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 7 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:04:22,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-21 18:04:22,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-21 18:04:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2021-12-21 18:04:22,909 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 3 [2021-12-21 18:04:22,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:04:22,910 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2021-12-21 18:04:22,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2021-12-21 18:04:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 18:04:22,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:04:22,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 18:04:22,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 18:04:23,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:04:23,117 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-21 18:04:23,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:04:23,120 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-21 18:04:23,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:04:23,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192701948] [2021-12-21 18:04:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:04:23,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:04:23,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:04:23,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:04:23,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 18:04:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:04:23,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 18:04:23,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:04:23,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:04:23,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-21 18:04:23,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-21 18:04:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:04:23,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:04:23,237 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:04:23,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192701948] [2021-12-21 18:04:23,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192701948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:04:23,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:04:23,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:04:23,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387400663] [2021-12-21 18:04:23,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:04:23,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:04:23,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:04:23,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:04:23,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:04:23,239 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:04:23,264 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-12-21 18:04:23,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:04:23,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-21 18:04:23,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:04:23,265 INFO L225 Difference]: With dead ends: 9 [2021-12-21 18:04:23,266 INFO L226 Difference]: Without dead ends: 9 [2021-12-21 18:04:23,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:04:23,268 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:04:23,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:04:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-21 18:04:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-21 18:04:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-12-21 18:04:23,271 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 3 [2021-12-21 18:04:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:04:23,271 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-12-21 18:04:23,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:04:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-12-21 18:04:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 18:04:23,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:04:23,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:04:23,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 18:04:23,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:04:23,472 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-12-21 18:04:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:04:23,473 INFO L85 PathProgramCache]: Analyzing trace with hash 59200043, now seen corresponding path program 1 times [2021-12-21 18:04:23,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:04:23,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519454816] [2021-12-21 18:04:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:04:23,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:04:23,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:04:23,476 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:04:23,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 18:04:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 18:04:23,547 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 18:04:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 18:04:23,590 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-21 18:04:23,591 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 18:04:23,591 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2021-12-21 18:04:23,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (5 of 7 remaining) [2021-12-21 18:04:23,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (4 of 7 remaining) [2021-12-21 18:04:23,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (3 of 7 remaining) [2021-12-21 18:04:23,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (2 of 7 remaining) [2021-12-21 18:04:23,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (1 of 7 remaining) [2021-12-21 18:04:23,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (0 of 7 remaining) [2021-12-21 18:04:23,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-21 18:04:23,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:04:23,796 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-21 18:04:23,798 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 18:04:23,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:04:23 BoogieIcfgContainer [2021-12-21 18:04:23,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 18:04:23,809 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 18:04:23,809 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 18:04:23,809 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 18:04:23,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:04:22" (3/4) ... [2021-12-21 18:04:23,811 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 18:04:23,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 18:04:23,812 INFO L158 Benchmark]: Toolchain (without parser) took 1980.84ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 40.2MB in the beginning and 45.6MB in the end (delta: -5.4MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2021-12-21 18:04:23,812 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:04:23,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.51ms. Allocated memory is still 60.8MB. Free memory was 39.9MB in the beginning and 37.6MB in the end (delta: 2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 18:04:23,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.15ms. Allocated memory is still 60.8MB. Free memory was 37.6MB in the beginning and 35.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 18:04:23,813 INFO L158 Benchmark]: Boogie Preprocessor took 34.99ms. Allocated memory is still 60.8MB. Free memory was 35.7MB in the beginning and 34.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 18:04:23,813 INFO L158 Benchmark]: RCFGBuilder took 291.23ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 34.4MB in the beginning and 59.8MB in the end (delta: -25.4MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-12-21 18:04:23,813 INFO L158 Benchmark]: TraceAbstraction took 1266.56ms. Allocated memory is still 77.6MB. Free memory was 59.5MB in the beginning and 46.1MB in the end (delta: 13.4MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-12-21 18:04:23,814 INFO L158 Benchmark]: Witness Printer took 2.14ms. Allocated memory is still 77.6MB. Free memory was 46.1MB in the beginning and 45.6MB in the end (delta: 443.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:04:23,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.51ms. Allocated memory is still 60.8MB. Free memory was 39.9MB in the beginning and 37.6MB in the end (delta: 2.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.15ms. Allocated memory is still 60.8MB. Free memory was 37.6MB in the beginning and 35.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.99ms. Allocated memory is still 60.8MB. Free memory was 35.7MB in the beginning and 34.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 291.23ms. Allocated memory was 60.8MB in the beginning and 77.6MB in the end (delta: 16.8MB). Free memory was 34.4MB in the beginning and 59.8MB in the end (delta: -25.4MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1266.56ms. Allocated memory is still 77.6MB. Free memory was 59.5MB in the beginning and 46.1MB in the end (delta: 13.4MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Witness Printer took 2.14ms. Allocated memory is still 77.6MB. Free memory was 46.1MB in the beginning and 45.6MB in the end (delta: 443.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 523]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 523. Possible FailurePath: [L525-L532] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L533] data.p0 = malloc(37U) VAL [data={13:0}, malloc(37U)={3:0}] [L534] data.str.p2 = &data VAL [data={13:0}] [L535] data.str.c[1] = sizeof data.str.p1 VAL [data={13:0}] [L536] return 0; [L536] return 0; VAL [\result=0] - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 10 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 2 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 11 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-21 18:04:23,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample