./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0158_1-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b 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/list-ext-properties/test-0158_1-3.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 da0196598caa8f7971f5c05318e98ec0e7e9ad277348cd08159b1fad4465fe6c --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 19:40:19,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 19:40:19,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 19:40:19,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 19:40:19,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 19:40:19,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 19:40:19,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 19:40:19,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 19:40:19,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 19:40:19,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 19:40:19,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 19:40:19,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 19:40:19,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 19:40:19,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 19:40:19,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 19:40:19,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 19:40:19,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 19:40:19,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 19:40:19,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 19:40:19,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 19:40:19,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 19:40:19,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 19:40:19,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 19:40:19,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 19:40:19,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 19:40:19,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 19:40:19,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 19:40:19,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 19:40:19,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 19:40:19,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 19:40:19,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 19:40:19,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 19:40:19,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 19:40:19,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 19:40:19,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 19:40:19,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 19:40:19,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 19:40:19,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 19:40:19,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 19:40:19,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 19:40:19,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 19:40:19,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-14 19:40:19,476 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 19:40:19,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 19:40:19,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 19:40:19,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 19:40:19,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 19:40:19,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 19:40:19,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 19:40:19,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 19:40:19,479 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 19:40:19,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 19:40:19,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 19:40:19,480 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 19:40:19,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 19:40:19,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 19:40:19,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 19:40:19,480 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-14 19:40:19,480 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-14 19:40:19,480 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-14 19:40:19,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 19:40:19,481 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 19:40:19,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 19:40:19,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 19:40:19,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 19:40:19,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 19:40:19,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 19:40:19,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:40:19,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 19:40:19,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 19:40:19,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 19:40:19,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 19:40:19,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 19:40:19,483 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da0196598caa8f7971f5c05318e98ec0e7e9ad277348cd08159b1fad4465fe6c [2021-12-14 19:40:19,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 19:40:19,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 19:40:19,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 19:40:19,682 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 19:40:19,682 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 19:40:19,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2021-12-14 19:40:19,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea8c0f84/b1aa491a65a14aada4ccc3cd09661aca/FLAGd55c248dc [2021-12-14 19:40:20,102 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 19:40:20,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2021-12-14 19:40:20,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea8c0f84/b1aa491a65a14aada4ccc3cd09661aca/FLAGd55c248dc [2021-12-14 19:40:20,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ea8c0f84/b1aa491a65a14aada4ccc3cd09661aca [2021-12-14 19:40:20,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 19:40:20,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 19:40:20,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 19:40:20,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 19:40:20,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 19:40:20,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d496b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20, skipping insertion in model container [2021-12-14 19:40:20,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 19:40:20,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 19:40:20,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:40:20,772 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 19:40:20,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:40:20,832 INFO L208 MainTranslator]: Completed translation [2021-12-14 19:40:20,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20 WrapperNode [2021-12-14 19:40:20,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 19:40:20,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 19:40:20,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 19:40:20,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 19:40:20,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,888 INFO L137 Inliner]: procedures = 124, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2021-12-14 19:40:20,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 19:40:20,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 19:40:20,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 19:40:20,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 19:40:20,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 19:40:20,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 19:40:20,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 19:40:20,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 19:40:20,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20" (1/1) ... [2021-12-14 19:40:20,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:40:20,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:40:20,962 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) [2021-12-14 19:40:20,976 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 [2021-12-14 19:40:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 19:40:21,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 19:40:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 19:40:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 19:40:21,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 19:40:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 19:40:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 19:40:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 19:40:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 19:40:21,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 19:40:21,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 19:40:21,106 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 19:40:21,107 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 19:40:21,243 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 19:40:21,247 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 19:40:21,247 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 19:40:21,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:40:21 BoogieIcfgContainer [2021-12-14 19:40:21,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 19:40:21,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 19:40:21,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 19:40:21,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 19:40:21,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:40:20" (1/3) ... [2021-12-14 19:40:21,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4ab2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:40:21, skipping insertion in model container [2021-12-14 19:40:21,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:40:20" (2/3) ... [2021-12-14 19:40:21,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4ab2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:40:21, skipping insertion in model container [2021-12-14 19:40:21,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:40:21" (3/3) ... [2021-12-14 19:40:21,254 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-3.i [2021-12-14 19:40:21,261 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 19:40:21,262 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-12-14 19:40:21,289 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 19:40:21,294 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 [2021-12-14 19:40:21,294 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-12-14 19:40:21,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 42 states have internal predecessors, (44), 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) [2021-12-14 19:40:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-14 19:40:21,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:40:21,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-14 19:40:21,307 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-14 19:40:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:40:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-14 19:40:21,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:40:21,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042286239] [2021-12-14 19:40:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:40:21,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:40:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:40:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:40:21,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:40:21,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042286239] [2021-12-14 19:40:21,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042286239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:40:21,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:40:21,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:40:21,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316233682] [2021-12-14 19:40:21,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:40:21,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:40:21,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:40:21,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:40:21,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:40:21,477 INFO L87 Difference]: Start difference. First operand has 43 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 42 states have internal predecessors, (44), 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) [2021-12-14 19:40:21,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:40:21,538 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-12-14 19:40:21,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:40:21,541 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 [2021-12-14 19:40:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:40:21,546 INFO L225 Difference]: With dead ends: 36 [2021-12-14 19:40:21,546 INFO L226 Difference]: Without dead ends: 34 [2021-12-14 19:40:21,548 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 [2021-12-14 19:40:21,551 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:40:21,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:40:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-14 19:40:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-14 19:40:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.75) internal successors, (35), 33 states have internal predecessors, (35), 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) [2021-12-14 19:40:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-12-14 19:40:21,574 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 3 [2021-12-14 19:40:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:40:21,575 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-12-14 19:40:21,575 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) [2021-12-14 19:40:21,575 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-12-14 19:40:21,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-14 19:40:21,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:40:21,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-14 19:40:21,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 19:40:21,576 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-14 19:40:21,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:40:21,578 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-14 19:40:21,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:40:21,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454909337] [2021-12-14 19:40:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:40:21,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:40:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:40:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:40:21,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:40:21,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454909337] [2021-12-14 19:40:21,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454909337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:40:21,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:40:21,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 19:40:21,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907260217] [2021-12-14 19:40:21,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:40:21,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 19:40:21,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:40:21,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 19:40:21,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 19:40:21,649 INFO L87 Difference]: Start difference. First operand 34 states and 35 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) [2021-12-14 19:40:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:40:21,700 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-12-14 19:40:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 19:40:21,700 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 [2021-12-14 19:40:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:40:21,701 INFO L225 Difference]: With dead ends: 27 [2021-12-14 19:40:21,701 INFO L226 Difference]: Without dead ends: 27 [2021-12-14 19:40:21,701 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 [2021-12-14 19:40:21,702 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:40:21,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 21 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:40:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-14 19:40:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-14 19:40:21,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.4) internal successors, (28), 26 states have internal predecessors, (28), 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) [2021-12-14 19:40:21,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-12-14 19:40:21,705 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 3 [2021-12-14 19:40:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:40:21,706 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-12-14 19:40:21,706 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) [2021-12-14 19:40:21,706 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-12-14 19:40:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-14 19:40:21,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:40:21,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:40:21,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 19:40:21,707 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-14 19:40:21,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:40:21,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1991758487, now seen corresponding path program 1 times [2021-12-14 19:40:21,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:40:21,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511893082] [2021-12-14 19:40:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:40:21,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:40:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:40:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:40:21,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:40:21,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511893082] [2021-12-14 19:40:21,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511893082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:40:21,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:40:21,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:40:21,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368705936] [2021-12-14 19:40:21,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:40:21,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:40:21,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:40:21,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:40:21,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:40:21,798 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-12-14 19:40:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:40:21,837 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-12-14 19:40:21,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:40:21,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-12-14 19:40:21,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:40:21,846 INFO L225 Difference]: With dead ends: 26 [2021-12-14 19:40:21,846 INFO L226 Difference]: Without dead ends: 26 [2021-12-14 19:40:21,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-14 19:40:21,849 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:40:21,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 49 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:40:21,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-14 19:40:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-14 19:40:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 25 states have internal predecessors, (27), 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) [2021-12-14 19:40:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-12-14 19:40:21,852 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2021-12-14 19:40:21,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:40:21,852 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-12-14 19:40:21,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-12-14 19:40:21,852 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-12-14 19:40:21,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-14 19:40:21,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:40:21,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:40:21,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 19:40:21,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-14 19:40:21,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:40:21,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1614971024, now seen corresponding path program 1 times [2021-12-14 19:40:21,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:40:21,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452618428] [2021-12-14 19:40:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:40:21,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:40:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:40:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:40:21,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:40:21,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452618428] [2021-12-14 19:40:21,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452618428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:40:21,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:40:21,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:40:21,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760721679] [2021-12-14 19:40:21,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:40:21,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:40:21,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:40:21,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:40:21,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:40:21,960 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-12-14 19:40:22,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:40:22,023 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-12-14 19:40:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:40:22,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-12-14 19:40:22,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:40:22,024 INFO L225 Difference]: With dead ends: 25 [2021-12-14 19:40:22,024 INFO L226 Difference]: Without dead ends: 25 [2021-12-14 19:40:22,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-14 19:40:22,046 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:40:22,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 34 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:40:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-14 19:40:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-14 19:40:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.3) internal successors, (26), 24 states have internal predecessors, (26), 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) [2021-12-14 19:40:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-12-14 19:40:22,051 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 13 [2021-12-14 19:40:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:40:22,051 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-12-14 19:40:22,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-12-14 19:40:22,051 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-12-14 19:40:22,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-14 19:40:22,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:40:22,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:40:22,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 19:40:22,052 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-14 19:40:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:40:22,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1475505735, now seen corresponding path program 1 times [2021-12-14 19:40:22,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:40:22,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695578575] [2021-12-14 19:40:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:40:22,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:40:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:40:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:40:22,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:40:22,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695578575] [2021-12-14 19:40:22,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695578575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:40:22,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:40:22,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:40:22,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691015696] [2021-12-14 19:40:22,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:40:22,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:40:22,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:40:22,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:40:22,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:40:22,155 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-12-14 19:40:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:40:22,230 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-12-14 19:40:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:40:22,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-12-14 19:40:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:40:22,232 INFO L225 Difference]: With dead ends: 24 [2021-12-14 19:40:22,232 INFO L226 Difference]: Without dead ends: 24 [2021-12-14 19:40:22,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-14 19:40:22,237 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:40:22,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 40 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 19:40:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-14 19:40:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-14 19:40:22,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 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) [2021-12-14 19:40:22,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-12-14 19:40:22,243 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2021-12-14 19:40:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:40:22,243 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-12-14 19:40:22,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-12-14 19:40:22,243 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-12-14 19:40:22,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-14 19:40:22,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:40:22,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:40:22,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 19:40:22,244 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-14 19:40:22,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:40:22,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1503962546, now seen corresponding path program 1 times [2021-12-14 19:40:22,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:40:22,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528620925] [2021-12-14 19:40:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:40:22,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:40:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:40:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:40:22,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:40:22,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528620925] [2021-12-14 19:40:22,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528620925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:40:22,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:40:22,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 19:40:22,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482829333] [2021-12-14 19:40:22,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:40:22,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 19:40:22,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:40:22,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 19:40:22,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 19:40:22,340 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-12-14 19:40:22,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:40:22,392 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-12-14 19:40:22,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 19:40:22,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2021-12-14 19:40:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:40:22,393 INFO L225 Difference]: With dead ends: 23 [2021-12-14 19:40:22,393 INFO L226 Difference]: Without dead ends: 23 [2021-12-14 19:40:22,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-14 19:40:22,395 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:40:22,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 43 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:40:22,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-14 19:40:22,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-14 19:40:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 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) [2021-12-14 19:40:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-12-14 19:40:22,399 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2021-12-14 19:40:22,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:40:22,399 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-12-14 19:40:22,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-12-14 19:40:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-12-14 19:40:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 19:40:22,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:40:22,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:40:22,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 19:40:22,400 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-14 19:40:22,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:40:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -621801253, now seen corresponding path program 1 times [2021-12-14 19:40:22,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:40:22,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044175899] [2021-12-14 19:40:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:40:22,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:40:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:40:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:40:22,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:40:22,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044175899] [2021-12-14 19:40:22,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044175899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:40:22,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:40:22,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 19:40:22,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906172895] [2021-12-14 19:40:22,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:40:22,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 19:40:22,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:40:22,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 19:40:22,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 19:40:22,500 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2021-12-14 19:40:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:40:22,569 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-12-14 19:40:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 19:40:22,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) Word has length 16 [2021-12-14 19:40:22,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:40:22,571 INFO L225 Difference]: With dead ends: 22 [2021-12-14 19:40:22,571 INFO L226 Difference]: Without dead ends: 22 [2021-12-14 19:40:22,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-14 19:40:22,572 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 19:40:22,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 30 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 19:40:22,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-14 19:40:22,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-14 19:40:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2021-12-14 19:40:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-12-14 19:40:22,578 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2021-12-14 19:40:22,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:40:22,578 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-12-14 19:40:22,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 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) [2021-12-14 19:40:22,580 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-12-14 19:40:22,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 19:40:22,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:40:22,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:40:22,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 19:40:22,581 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-14 19:40:22,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:40:22,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2095969580, now seen corresponding path program 1 times [2021-12-14 19:40:22,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:40:22,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563706246] [2021-12-14 19:40:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:40:22,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:40:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 19:40:22,629 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 19:40:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 19:40:22,682 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 19:40:22,682 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 19:40:22,683 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (20 of 21 remaining) [2021-12-14 19:40:22,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (19 of 21 remaining) [2021-12-14 19:40:22,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (18 of 21 remaining) [2021-12-14 19:40:22,684 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (17 of 21 remaining) [2021-12-14 19:40:22,685 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (16 of 21 remaining) [2021-12-14 19:40:22,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (15 of 21 remaining) [2021-12-14 19:40:22,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (14 of 21 remaining) [2021-12-14 19:40:22,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (13 of 21 remaining) [2021-12-14 19:40:22,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (12 of 21 remaining) [2021-12-14 19:40:22,686 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (11 of 21 remaining) [2021-12-14 19:40:22,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (10 of 21 remaining) [2021-12-14 19:40:22,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (9 of 21 remaining) [2021-12-14 19:40:22,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (8 of 21 remaining) [2021-12-14 19:40:22,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (7 of 21 remaining) [2021-12-14 19:40:22,688 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (6 of 21 remaining) [2021-12-14 19:40:22,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE (5 of 21 remaining) [2021-12-14 19:40:22,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE (4 of 21 remaining) [2021-12-14 19:40:22,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (3 of 21 remaining) [2021-12-14 19:40:22,689 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (2 of 21 remaining) [2021-12-14 19:40:22,690 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (1 of 21 remaining) [2021-12-14 19:40:22,700 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (0 of 21 remaining) [2021-12-14 19:40:22,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 19:40:22,704 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 19:40:22,707 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 19:40:22,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 07:40:22 BoogieIcfgContainer [2021-12-14 19:40:22,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 19:40:22,750 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 19:40:22,750 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 19:40:22,750 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 19:40:22,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:40:21" (3/4) ... [2021-12-14 19:40:22,757 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-14 19:40:22,811 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 19:40:22,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 19:40:22,812 INFO L158 Benchmark]: Toolchain (without parser) took 2332.71ms. Allocated memory was 119.5MB in the beginning and 161.5MB in the end (delta: 41.9MB). Free memory was 83.4MB in the beginning and 136.2MB in the end (delta: -52.8MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2021-12-14 19:40:22,812 INFO L158 Benchmark]: CDTParser took 5.33ms. Allocated memory is still 119.5MB. Free memory was 93.2MB in the beginning and 100.5MB in the end (delta: -7.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 19:40:22,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.57ms. Allocated memory is still 119.5MB. Free memory was 83.3MB in the beginning and 88.7MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 19:40:22,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.05ms. Allocated memory is still 119.5MB. Free memory was 88.7MB in the beginning and 87.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 19:40:22,813 INFO L158 Benchmark]: Boogie Preprocessor took 45.74ms. Allocated memory is still 119.5MB. Free memory was 87.1MB in the beginning and 86.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 19:40:22,813 INFO L158 Benchmark]: RCFGBuilder took 312.27ms. Allocated memory is still 119.5MB. Free memory was 86.0MB in the beginning and 74.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 19:40:22,813 INFO L158 Benchmark]: TraceAbstraction took 1500.38ms. Allocated memory is still 119.5MB. Free memory was 73.5MB in the beginning and 41.5MB in the end (delta: 32.0MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2021-12-14 19:40:22,814 INFO L158 Benchmark]: Witness Printer took 61.33ms. Allocated memory was 119.5MB in the beginning and 161.5MB in the end (delta: 41.9MB). Free memory was 41.5MB in the beginning and 136.2MB in the end (delta: -94.7MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-12-14 19:40:22,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 5.33ms. Allocated memory is still 119.5MB. Free memory was 93.2MB in the beginning and 100.5MB in the end (delta: -7.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.57ms. Allocated memory is still 119.5MB. Free memory was 83.3MB in the beginning and 88.7MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.05ms. Allocated memory is still 119.5MB. Free memory was 88.7MB in the beginning and 87.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.74ms. Allocated memory is still 119.5MB. Free memory was 87.1MB in the beginning and 86.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 312.27ms. Allocated memory is still 119.5MB. Free memory was 86.0MB in the beginning and 74.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1500.38ms. Allocated memory is still 119.5MB. Free memory was 73.5MB in the beginning and 41.5MB in the end (delta: 32.0MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. * Witness Printer took 61.33ms. Allocated memory was 119.5MB in the beginning and 161.5MB in the end (delta: 41.9MB). Free memory was 41.5MB in the beginning and 136.2MB in the end (delta: -94.7MB). Peak memory consumption was 6.2MB. 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 - CounterExampleResult [Line: 545]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L535] EXPR data.p0 VAL [data={3:0}, data.p0={-1:0}] [L535] void *ptr = data.p0; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L539] data.str.p2 = 30 VAL [data={3:0}, ptr={-1:0}] [L541] EXPR data.str.p2 VAL [data={3:0}, data.str.p2=30, ptr={-1:0}] [L541] COND FALSE !(25 > data.str.p2) [L544] EXPR data.p0 VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L544] free(data.p0) VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L544] free(data.p0) VAL [data={3:0}, data.p0={-1:0}, ptr={-1:0}] [L544] free(data.p0) [L545] free(ptr) VAL [data={3:0}, ptr={-1:0}] [L545] free(ptr) VAL [data={3:0}, ptr={-1:0}] [L545] free(ptr) VAL [data={3:0}, ptr={-1:0}] - 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. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 243 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 130 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 223 IncrementalHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 113 mSDtfsCounter, 223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 40, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 387 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-14 19:40:22,843 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free)