./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0158-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0158-1.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 be381633e08917ff7523167eb47da4558cd865b57872b34c3877295f48e457c8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 06:16:19,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 06:16:19,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 06:16:19,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 06:16:19,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 06:16:19,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 06:16:19,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 06:16:19,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 06:16:19,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 06:16:19,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 06:16:19,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 06:16:19,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 06:16:19,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 06:16:19,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 06:16:19,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 06:16:19,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 06:16:19,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 06:16:19,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 06:16:19,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 06:16:19,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 06:16:19,479 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 06:16:19,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 06:16:19,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 06:16:19,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 06:16:19,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 06:16:19,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 06:16:19,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 06:16:19,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 06:16:19,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 06:16:19,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 06:16:19,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 06:16:19,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 06:16:19,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 06:16:19,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 06:16:19,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 06:16:19,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 06:16:19,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 06:16:19,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 06:16:19,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 06:16:19,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 06:16:19,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 06:16:19,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 06:16:19,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-14 06:16:19,516 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 06:16:19,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 06:16:19,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 06:16:19,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 06:16:19,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 06:16:19,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 06:16:19,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 06:16:19,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 06:16:19,518 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 06:16:19,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 06:16:19,523 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 06:16:19,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 06:16:19,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 06:16:19,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 06:16:19,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 06:16:19,524 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 06:16:19,524 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 06:16:19,524 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 06:16:19,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 06:16:19,525 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 06:16:19,525 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 06:16:19,525 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 06:16:19,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 06:16:19,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 06:16:19,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 06:16:19,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:16:19,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 06:16:19,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 06:16:19,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 06:16:19,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 06:16:19,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be381633e08917ff7523167eb47da4558cd865b57872b34c3877295f48e457c8 [2022-07-14 06:16:19,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 06:16:19,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 06:16:19,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 06:16:19,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 06:16:19,726 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 06:16:19,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-1.i [2022-07-14 06:16:19,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f988263a6/510ea9efe048492fbbbe1b9e95e6c1c7/FLAG30d4f763f [2022-07-14 06:16:20,198 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 06:16:20,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-1.i [2022-07-14 06:16:20,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f988263a6/510ea9efe048492fbbbe1b9e95e6c1c7/FLAG30d4f763f [2022-07-14 06:16:20,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f988263a6/510ea9efe048492fbbbe1b9e95e6c1c7 [2022-07-14 06:16:20,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 06:16:20,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 06:16:20,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 06:16:20,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 06:16:20,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 06:16:20,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cad98a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20, skipping insertion in model container [2022-07-14 06:16:20,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 06:16:20,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:16:20,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:16:20,787 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 06:16:20,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:16:20,846 INFO L208 MainTranslator]: Completed translation [2022-07-14 06:16:20,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20 WrapperNode [2022-07-14 06:16:20,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 06:16:20,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 06:16:20,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 06:16:20,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 06:16:20,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,886 INFO L137 Inliner]: procedures = 123, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2022-07-14 06:16:20,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 06:16:20,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 06:16:20,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 06:16:20,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 06:16:20,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 06:16:20,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 06:16:20,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 06:16:20,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 06:16:20,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20" (1/1) ... [2022-07-14 06:16:20,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:16:20,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 06:16:20,951 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) [2022-07-14 06:16:20,953 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 [2022-07-14 06:16:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 06:16:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 06:16:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 06:16:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 06:16:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 06:16:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 06:16:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 06:16:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 06:16:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 06:16:21,056 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 06:16:21,057 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 06:16:21,169 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 06:16:21,173 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 06:16:21,173 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 06:16:21,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:16:21 BoogieIcfgContainer [2022-07-14 06:16:21,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 06:16:21,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 06:16:21,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 06:16:21,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 06:16:21,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 06:16:20" (1/3) ... [2022-07-14 06:16:21,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cbb595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:16:21, skipping insertion in model container [2022-07-14 06:16:21,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:16:20" (2/3) ... [2022-07-14 06:16:21,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cbb595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:16:21, skipping insertion in model container [2022-07-14 06:16:21,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:16:21" (3/3) ... [2022-07-14 06:16:21,186 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-1.i [2022-07-14 06:16:21,196 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 06:16:21,197 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-07-14 06:16:21,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 06:16:21,231 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f235c89, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5a4f3a4a [2022-07-14 06:16:21,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-07-14 06:16:21,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 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) [2022-07-14 06:16:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 06:16:21,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:16:21,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 06:16:21,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-07-14 06:16:21,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:16:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-07-14 06:16:21,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 06:16:21,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145196322] [2022-07-14 06:16:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:16:21,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 06:16:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:16:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:16:21,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 06:16:21,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145196322] [2022-07-14 06:16:21,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145196322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:16:21,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:16:21,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:16:21,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457741484] [2022-07-14 06:16:21,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:16:21,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:16:21,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 06:16:21,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:16:21,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:16:21,423 INFO L87 Difference]: Start difference. First operand has 22 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 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) [2022-07-14 06:16:21,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:16:21,448 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2022-07-14 06:16:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:16:21,450 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 [2022-07-14 06:16:21,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:16:21,455 INFO L225 Difference]: With dead ends: 19 [2022-07-14 06:16:21,455 INFO L226 Difference]: Without dead ends: 17 [2022-07-14 06:16:21,456 INFO L412 NwaCegarLoop]: 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 [2022-07-14 06:16:21,458 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:16:21,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 11 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:16:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-14 06:16:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-14 06:16:21,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.6) internal successors, (16), 16 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:16:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2022-07-14 06:16:21,477 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 3 [2022-07-14 06:16:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:16:21,478 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2022-07-14 06:16:21,478 INFO L496 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) [2022-07-14 06:16:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2022-07-14 06:16:21,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 06:16:21,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:16:21,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 06:16:21,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 06:16:21,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-07-14 06:16:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:16:21,480 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-07-14 06:16:21,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 06:16:21,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748730097] [2022-07-14 06:16:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:16:21,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 06:16:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:16:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:16:21,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 06:16:21,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748730097] [2022-07-14 06:16:21,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748730097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:16:21,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:16:21,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:16:21,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178816046] [2022-07-14 06:16:21,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:16:21,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:16:21,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 06:16:21,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:16:21,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:16:21,553 INFO L87 Difference]: Start difference. First operand 17 states and 16 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) [2022-07-14 06:16:21,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:16:21,571 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2022-07-14 06:16:21,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:16:21,571 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 [2022-07-14 06:16:21,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:16:21,572 INFO L225 Difference]: With dead ends: 14 [2022-07-14 06:16:21,572 INFO L226 Difference]: Without dead ends: 14 [2022-07-14 06:16:21,573 INFO L412 NwaCegarLoop]: 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 [2022-07-14 06:16:21,574 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:16:21,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:16:21,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-14 06:16:21,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-14 06:16:21,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 13 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) [2022-07-14 06:16:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2022-07-14 06:16:21,580 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 3 [2022-07-14 06:16:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:16:21,580 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2022-07-14 06:16:21,580 INFO L496 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) [2022-07-14 06:16:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-07-14 06:16:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-14 06:16:21,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:16:21,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:16:21,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-14 06:16:21,582 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-07-14 06:16:21,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:16:21,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1803024996, now seen corresponding path program 1 times [2022-07-14 06:16:21,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 06:16:21,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011025701] [2022-07-14 06:16:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:16:21,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 06:16:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:16:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:16:21,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 06:16:21,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011025701] [2022-07-14 06:16:21,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011025701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:16:21,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:16:21,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:16:21,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150408132] [2022-07-14 06:16:21,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:16:21,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:16:21,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 06:16:21,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:16:21,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:16:21,661 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-07-14 06:16:21,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:16:21,710 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-07-14 06:16:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:16:21,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2022-07-14 06:16:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:16:21,711 INFO L225 Difference]: With dead ends: 13 [2022-07-14 06:16:21,711 INFO L226 Difference]: Without dead ends: 13 [2022-07-14 06:16:21,712 INFO L412 NwaCegarLoop]: 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 [2022-07-14 06:16:21,713 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:16:21,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 17 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:16:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-14 06:16:21,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-14 06:16:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.2) internal successors, (12), 12 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) [2022-07-14 06:16:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2022-07-14 06:16:21,721 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 7 [2022-07-14 06:16:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:16:21,721 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2022-07-14 06:16:21,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-07-14 06:16:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2022-07-14 06:16:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-14 06:16:21,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:16:21,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:16:21,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-14 06:16:21,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-07-14 06:16:21,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:16:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash 59200074, now seen corresponding path program 1 times [2022-07-14 06:16:21,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 06:16:21,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464742266] [2022-07-14 06:16:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:16:21,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 06:16:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:16:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:16:21,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 06:16:21,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464742266] [2022-07-14 06:16:21,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464742266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:16:21,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:16:21,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:16:21,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53309330] [2022-07-14 06:16:21,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:16:21,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:16:21,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 06:16:21,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:16:21,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:16:21,786 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:16:21,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:16:21,817 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2022-07-14 06:16:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:16:21,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-14 06:16:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:16:21,818 INFO L225 Difference]: With dead ends: 12 [2022-07-14 06:16:21,819 INFO L226 Difference]: Without dead ends: 12 [2022-07-14 06:16:21,821 INFO L412 NwaCegarLoop]: 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 [2022-07-14 06:16:21,822 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:16:21,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 10 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:16:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-14 06:16:21,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-14 06:16:21,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:16:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2022-07-14 06:16:21,833 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 8 [2022-07-14 06:16:21,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:16:21,833 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2022-07-14 06:16:21,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:16:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2022-07-14 06:16:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-14 06:16:21,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:16:21,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:16:21,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-14 06:16:21,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-07-14 06:16:21,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:16:21,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1835202342, now seen corresponding path program 1 times [2022-07-14 06:16:21,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 06:16:21,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900122609] [2022-07-14 06:16:21,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:16:21,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 06:16:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:16:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:16:21,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 06:16:21,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900122609] [2022-07-14 06:16:21,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900122609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:16:21,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:16:21,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:16:21,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167326975] [2022-07-14 06:16:21,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:16:21,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:16:21,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 06:16:21,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:16:21,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:16:21,918 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-07-14 06:16:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:16:21,950 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2022-07-14 06:16:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:16:21,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-07-14 06:16:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:16:21,951 INFO L225 Difference]: With dead ends: 11 [2022-07-14 06:16:21,951 INFO L226 Difference]: Without dead ends: 11 [2022-07-14 06:16:21,952 INFO L412 NwaCegarLoop]: 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 [2022-07-14 06:16:21,956 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:16:21,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:16:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-14 06:16:21,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-14 06:16:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 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) [2022-07-14 06:16:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2022-07-14 06:16:21,960 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 9 [2022-07-14 06:16:21,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:16:21,961 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2022-07-14 06:16:21,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-07-14 06:16:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2022-07-14 06:16:21,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 06:16:21,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:16:21,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:16:21,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-14 06:16:21,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-07-14 06:16:21,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:16:21,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1056697805, now seen corresponding path program 1 times [2022-07-14 06:16:21,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 06:16:21,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131049465] [2022-07-14 06:16:21,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:16:21,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 06:16:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:16:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:16:22,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 06:16:22,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131049465] [2022-07-14 06:16:22,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131049465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:16:22,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:16:22,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:16:22,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659777601] [2022-07-14 06:16:22,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:16:22,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:16:22,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 06:16:22,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:16:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:16:22,080 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-07-14 06:16:22,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:16:22,118 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2022-07-14 06:16:22,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:16:22,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2022-07-14 06:16:22,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:16:22,119 INFO L225 Difference]: With dead ends: 10 [2022-07-14 06:16:22,119 INFO L226 Difference]: Without dead ends: 0 [2022-07-14 06:16:22,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:16:22,121 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:16:22,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 8 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:16:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-14 06:16:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-14 06:16:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-07-14 06:16:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-14 06:16:22,125 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-07-14 06:16:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:16:22,125 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 06:16:22,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-07-14 06:16:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-14 06:16:22,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-14 06:16:22,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2022-07-14 06:16:22,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2022-07-14 06:16:22,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-07-14 06:16:22,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2022-07-14 06:16:22,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2022-07-14 06:16:22,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2022-07-14 06:16:22,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (3 of 10 remaining) [2022-07-14 06:16:22,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 10 remaining) [2022-07-14 06:16:22,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 10 remaining) [2022-07-14 06:16:22,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2022-07-14 06:16:22,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-14 06:16:22,135 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-14 06:16:22,136 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-14 06:16:22,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 06:16:22 BoogieIcfgContainer [2022-07-14 06:16:22,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-14 06:16:22,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 06:16:22,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 06:16:22,139 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 06:16:22,139 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:16:21" (3/4) ... [2022-07-14 06:16:22,141 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-14 06:16:22,149 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-14 06:16:22,149 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-14 06:16:22,149 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-07-14 06:16:22,149 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-14 06:16:22,170 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 06:16:22,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 06:16:22,172 INFO L158 Benchmark]: Toolchain (without parser) took 1605.19ms. Allocated memory is still 111.1MB. Free memory was 77.9MB in the beginning and 49.2MB in the end (delta: 28.7MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2022-07-14 06:16:22,172 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 63.3MB in the beginning and 63.3MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 06:16:22,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.24ms. Allocated memory is still 111.1MB. Free memory was 77.5MB in the beginning and 80.9MB in the end (delta: -3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 06:16:22,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.53ms. Allocated memory is still 111.1MB. Free memory was 80.9MB in the beginning and 79.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 06:16:22,173 INFO L158 Benchmark]: Boogie Preprocessor took 28.65ms. Allocated memory is still 111.1MB. Free memory was 79.2MB in the beginning and 78.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 06:16:22,174 INFO L158 Benchmark]: RCFGBuilder took 258.78ms. Allocated memory is still 111.1MB. Free memory was 78.0MB in the beginning and 67.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-14 06:16:22,174 INFO L158 Benchmark]: TraceAbstraction took 962.37ms. Allocated memory is still 111.1MB. Free memory was 66.8MB in the beginning and 51.8MB in the end (delta: 14.9MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2022-07-14 06:16:22,174 INFO L158 Benchmark]: Witness Printer took 31.56ms. Allocated memory is still 111.1MB. Free memory was 51.8MB in the beginning and 49.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 06:16:22,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory was 63.3MB in the beginning and 63.3MB in the end (delta: 25.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.24ms. Allocated memory is still 111.1MB. Free memory was 77.5MB in the beginning and 80.9MB in the end (delta: -3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.53ms. Allocated memory is still 111.1MB. Free memory was 80.9MB in the beginning and 79.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.65ms. Allocated memory is still 111.1MB. Free memory was 79.2MB in the beginning and 78.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 258.78ms. Allocated memory is still 111.1MB. Free memory was 78.0MB in the beginning and 67.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 962.37ms. Allocated memory is still 111.1MB. Free memory was 66.8MB in the beginning and 51.8MB in the end (delta: 14.9MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. * Witness Printer took 31.56ms. Allocated memory is still 111.1MB. Free memory was 51.8MB in the beginning and 49.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102 IncrementalHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 40 mSDtfsCounter, 102 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 31, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 265 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-14 06:16:22,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE