./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 35987657 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-?-3598765 [2022-07-21 17:07:18,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 17:07:18,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 17:07:18,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 17:07:18,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 17:07:18,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 17:07:18,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 17:07:18,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 17:07:18,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 17:07:18,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 17:07:18,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 17:07:18,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 17:07:18,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 17:07:18,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 17:07:18,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 17:07:18,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 17:07:18,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 17:07:18,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 17:07:18,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 17:07:18,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 17:07:18,842 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 17:07:18,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 17:07:18,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 17:07:18,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 17:07:18,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 17:07:18,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 17:07:18,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 17:07:18,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 17:07:18,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 17:07:18,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 17:07:18,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 17:07:18,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 17:07:18,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 17:07:18,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 17:07:18,860 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 17:07:18,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 17:07:18,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 17:07:18,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 17:07:18,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 17:07:18,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 17:07:18,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 17:07:18,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 17:07:18,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-21 17:07:18,906 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 17:07:18,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 17:07:18,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 17:07:18,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 17:07:18,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 17:07:18,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 17:07:18,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 17:07:18,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 17:07:18,910 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 17:07:18,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 17:07:18,911 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 17:07:18,912 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 17:07:18,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 17:07:18,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 17:07:18,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 17:07:18,912 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 17:07:18,918 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 17:07:18,918 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 17:07:18,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 17:07:18,919 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 17:07:18,919 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 17:07:18,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 17:07:18,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 17:07:18,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 17:07:18,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 17:07:18,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:07:18,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 17:07:18,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 17:07:18,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 17:07:18,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 17:07:18,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be381633e08917ff7523167eb47da4558cd865b57872b34c3877295f48e457c8 [2022-07-21 17:07:19,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 17:07:19,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 17:07:19,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 17:07:19,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 17:07:19,246 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 17:07:19,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-1.i [2022-07-21 17:07:19,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dfbac746/80cafd85fc65409bacaf8c6904c89ba6/FLAG1b5c880be [2022-07-21 17:07:19,822 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 17:07:19,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-1.i [2022-07-21 17:07:19,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dfbac746/80cafd85fc65409bacaf8c6904c89ba6/FLAG1b5c880be [2022-07-21 17:07:20,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dfbac746/80cafd85fc65409bacaf8c6904c89ba6 [2022-07-21 17:07:20,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 17:07:20,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 17:07:20,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 17:07:20,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 17:07:20,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 17:07:20,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7829531b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20, skipping insertion in model container [2022-07-21 17:07:20,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 17:07:20,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:07:20,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:07:20,464 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 17:07:20,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:07:20,533 INFO L208 MainTranslator]: Completed translation [2022-07-21 17:07:20,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20 WrapperNode [2022-07-21 17:07:20,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 17:07:20,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 17:07:20,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 17:07:20,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 17:07:20,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,587 INFO L137 Inliner]: procedures = 123, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2022-07-21 17:07:20,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 17:07:20,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 17:07:20,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 17:07:20,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 17:07:20,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 17:07:20,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 17:07:20,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 17:07:20,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 17:07:20,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20" (1/1) ... [2022-07-21 17:07:20,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:07:20,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:07:20,649 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) [2022-07-21 17:07:20,653 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 [2022-07-21 17:07:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 17:07:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 17:07:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 17:07:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 17:07:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 17:07:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 17:07:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 17:07:20,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 17:07:20,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 17:07:20,755 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 17:07:20,756 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 17:07:20,905 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 17:07:20,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 17:07:20,911 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 17:07:20,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:07:20 BoogieIcfgContainer [2022-07-21 17:07:20,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 17:07:20,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 17:07:20,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 17:07:20,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 17:07:20,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:07:20" (1/3) ... [2022-07-21 17:07:20,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c446389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:07:20, skipping insertion in model container [2022-07-21 17:07:20,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:07:20" (2/3) ... [2022-07-21 17:07:20,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c446389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:07:20, skipping insertion in model container [2022-07-21 17:07:20,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:07:20" (3/3) ... [2022-07-21 17:07:20,920 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-1.i [2022-07-21 17:07:20,934 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 17:07:20,934 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-07-21 17:07:20,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 17:07:21,007 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@246708, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42de77b7 [2022-07-21 17:07:21,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-07-21 17:07:21,028 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) [2022-07-21 17:07:21,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-21 17:07:21,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:07:21,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-21 17:07:21,035 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)] === [2022-07-21 17:07:21,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:07:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-07-21 17:07:21,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:07:21,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559448448] [2022-07-21 17:07:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:07:21,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:07:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:07:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:07:21,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:07:21,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559448448] [2022-07-21 17:07:21,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559448448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:07:21,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:07:21,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 17:07:21,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976746564] [2022-07-21 17:07:21,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:07:21,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:07:21,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:07:21,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:07:21,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:07:21,326 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) [2022-07-21 17:07:21,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:07:21,377 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2022-07-21 17:07:21,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:07:21,380 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 [2022-07-21 17:07:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:07:21,388 INFO L225 Difference]: With dead ends: 19 [2022-07-21 17:07:21,389 INFO L226 Difference]: Without dead ends: 17 [2022-07-21 17:07:21,392 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 [2022-07-21 17:07:21,397 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 [2022-07-21 17:07:21,398 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] [2022-07-21 17:07:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-21 17:07:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-21 17:07:21,424 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) [2022-07-21 17:07:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2022-07-21 17:07:21,426 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 3 [2022-07-21 17:07:21,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:07:21,427 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2022-07-21 17:07:21,427 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) [2022-07-21 17:07:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2022-07-21 17:07:21,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-21 17:07:21,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:07:21,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-21 17:07:21,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 17:07:21,429 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)] === [2022-07-21 17:07:21,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:07:21,431 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-07-21 17:07:21,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:07:21,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509594282] [2022-07-21 17:07:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:07:21,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:07:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:07:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:07:21,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:07:21,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509594282] [2022-07-21 17:07:21,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509594282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:07:21,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:07:21,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 17:07:21,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871511035] [2022-07-21 17:07:21,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:07:21,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 17:07:21,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:07:21,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 17:07:21,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 17:07:21,508 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) [2022-07-21 17:07:21,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:07:21,533 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2022-07-21 17:07:21,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 17:07:21,534 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 [2022-07-21 17:07:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:07:21,536 INFO L225 Difference]: With dead ends: 14 [2022-07-21 17:07:21,536 INFO L226 Difference]: Without dead ends: 14 [2022-07-21 17:07:21,540 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 [2022-07-21 17:07:21,541 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 [2022-07-21 17:07:21,542 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] [2022-07-21 17:07:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-21 17:07:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-21 17:07:21,549 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) [2022-07-21 17:07:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2022-07-21 17:07:21,550 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 3 [2022-07-21 17:07:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:07:21,551 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2022-07-21 17:07:21,552 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) [2022-07-21 17:07:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-07-21 17:07:21,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 17:07:21,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:07:21,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:07:21,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 17:07:21,557 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)] === [2022-07-21 17:07:21,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:07:21,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1803024996, now seen corresponding path program 1 times [2022-07-21 17:07:21,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:07:21,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081783767] [2022-07-21 17:07:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:07:21,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:07:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:07:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:07:21,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:07:21,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081783767] [2022-07-21 17:07:21,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081783767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:07:21,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:07:21,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:07:21,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620448984] [2022-07-21 17:07:21,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:07:21,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:07:21,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:07:21,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:07:21,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:07:21,626 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) [2022-07-21 17:07:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:07:21,668 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-07-21 17:07:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:07:21,669 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 [2022-07-21 17:07:21,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:07:21,669 INFO L225 Difference]: With dead ends: 13 [2022-07-21 17:07:21,670 INFO L226 Difference]: Without dead ends: 13 [2022-07-21 17:07:21,670 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 [2022-07-21 17:07:21,671 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 [2022-07-21 17:07:21,672 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] [2022-07-21 17:07:21,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-21 17:07:21,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-21 17:07:21,674 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) [2022-07-21 17:07:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2022-07-21 17:07:21,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 7 [2022-07-21 17:07:21,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:07:21,675 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2022-07-21 17:07:21,675 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) [2022-07-21 17:07:21,675 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2022-07-21 17:07:21,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 17:07:21,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:07:21,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:07:21,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 17:07:21,676 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)] === [2022-07-21 17:07:21,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:07:21,677 INFO L85 PathProgramCache]: Analyzing trace with hash 59200074, now seen corresponding path program 1 times [2022-07-21 17:07:21,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:07:21,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065571414] [2022-07-21 17:07:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:07:21,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:07:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:07:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:07:21,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:07:21,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065571414] [2022-07-21 17:07:21,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065571414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:07:21,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:07:21,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:07:21,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097766522] [2022-07-21 17:07:21,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:07:21,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:07:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:07:21,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:07:21,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:07:21,765 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) [2022-07-21 17:07:21,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:07:21,810 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2022-07-21 17:07:21,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:07:21,810 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 [2022-07-21 17:07:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:07:21,811 INFO L225 Difference]: With dead ends: 12 [2022-07-21 17:07:21,811 INFO L226 Difference]: Without dead ends: 12 [2022-07-21 17:07:21,812 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 [2022-07-21 17:07:21,813 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 [2022-07-21 17:07:21,813 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] [2022-07-21 17:07:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-21 17:07:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-21 17:07:21,815 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) [2022-07-21 17:07:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2022-07-21 17:07:21,816 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 8 [2022-07-21 17:07:21,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:07:21,816 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2022-07-21 17:07:21,817 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) [2022-07-21 17:07:21,817 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2022-07-21 17:07:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 17:07:21,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:07:21,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:07:21,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 17:07:21,818 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)] === [2022-07-21 17:07:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:07:21,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1835202342, now seen corresponding path program 1 times [2022-07-21 17:07:21,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:07:21,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915598079] [2022-07-21 17:07:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:07:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:07:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:07:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:07:21,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:07:21,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915598079] [2022-07-21 17:07:21,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915598079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:07:21,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:07:21,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:07:21,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475983652] [2022-07-21 17:07:21,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:07:21,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:07:21,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:07:21,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:07:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:07:21,872 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) [2022-07-21 17:07:21,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:07:21,907 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2022-07-21 17:07:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:07:21,908 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 [2022-07-21 17:07:21,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:07:21,908 INFO L225 Difference]: With dead ends: 11 [2022-07-21 17:07:21,908 INFO L226 Difference]: Without dead ends: 11 [2022-07-21 17:07:21,909 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 [2022-07-21 17:07:21,910 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 [2022-07-21 17:07:21,910 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] [2022-07-21 17:07:21,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-21 17:07:21,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-21 17:07:21,912 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) [2022-07-21 17:07:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2022-07-21 17:07:21,913 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 9 [2022-07-21 17:07:21,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:07:21,913 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2022-07-21 17:07:21,913 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) [2022-07-21 17:07:21,914 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2022-07-21 17:07:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 17:07:21,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:07:21,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:07:21,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 17:07:21,915 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)] === [2022-07-21 17:07:21,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:07:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1056697805, now seen corresponding path program 1 times [2022-07-21 17:07:21,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 17:07:21,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145048230] [2022-07-21 17:07:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:07:21,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 17:07:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:07:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:07:22,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 17:07:22,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145048230] [2022-07-21 17:07:22,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145048230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:07:22,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:07:22,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 17:07:22,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912314734] [2022-07-21 17:07:22,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:07:22,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:07:22,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 17:07:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:07:22,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:07:22,111 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) [2022-07-21 17:07:22,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:07:22,157 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2022-07-21 17:07:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 17:07:22,158 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 [2022-07-21 17:07:22,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:07:22,159 INFO L225 Difference]: With dead ends: 10 [2022-07-21 17:07:22,159 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 17:07:22,159 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 [2022-07-21 17:07:22,160 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 [2022-07-21 17:07:22,161 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] [2022-07-21 17:07:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 17:07:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 17:07:22,162 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) [2022-07-21 17:07:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 17:07:22,162 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-07-21 17:07:22,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:07:22,162 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 17:07:22,163 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) [2022-07-21 17:07:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 17:07:22,163 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 17:07:22,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2022-07-21 17:07:22,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2022-07-21 17:07:22,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-07-21 17:07:22,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2022-07-21 17:07:22,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2022-07-21 17:07:22,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2022-07-21 17:07:22,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (3 of 10 remaining) [2022-07-21 17:07:22,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE (2 of 10 remaining) [2022-07-21 17:07:22,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (1 of 10 remaining) [2022-07-21 17:07:22,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2022-07-21 17:07:22,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 17:07:22,171 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-21 17:07:22,173 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 17:07:22,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:07:22 BoogieIcfgContainer [2022-07-21 17:07:22,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 17:07:22,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 17:07:22,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 17:07:22,178 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 17:07:22,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:07:20" (3/4) ... [2022-07-21 17:07:22,181 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 17:07:22,190 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-21 17:07:22,191 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 17:07:22,191 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-07-21 17:07:22,191 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 17:07:22,216 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 17:07:22,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 17:07:22,217 INFO L158 Benchmark]: Toolchain (without parser) took 2028.81ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.4MB in the beginning and 31.5MB in the end (delta: -1.1MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-07-21 17:07:22,218 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 54.5MB. Free memory is still 36.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:07:22,218 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.87ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.2MB in the beginning and 44.2MB in the end (delta: -14.0MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-07-21 17:07:22,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.32ms. Allocated memory is still 67.1MB. Free memory was 44.2MB in the beginning and 42.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 17:07:22,218 INFO L158 Benchmark]: Boogie Preprocessor took 24.27ms. Allocated memory is still 67.1MB. Free memory was 42.5MB in the beginning and 41.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:07:22,219 INFO L158 Benchmark]: RCFGBuilder took 299.92ms. Allocated memory is still 67.1MB. Free memory was 41.3MB in the beginning and 45.6MB in the end (delta: -4.3MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2022-07-21 17:07:22,219 INFO L158 Benchmark]: TraceAbstraction took 1262.39ms. Allocated memory is still 67.1MB. Free memory was 45.1MB in the beginning and 33.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2022-07-21 17:07:22,219 INFO L158 Benchmark]: Witness Printer took 39.29ms. Allocated memory is still 67.1MB. Free memory was 33.6MB in the beginning and 31.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 17:07:22,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 54.5MB. Free memory is still 36.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.87ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.2MB in the beginning and 44.2MB in the end (delta: -14.0MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.32ms. Allocated memory is still 67.1MB. Free memory was 44.2MB in the beginning and 42.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.27ms. Allocated memory is still 67.1MB. Free memory was 42.5MB in the beginning and 41.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 299.92ms. Allocated memory is still 67.1MB. Free memory was 41.3MB in the beginning and 45.6MB in the end (delta: -4.3MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1262.39ms. Allocated memory is still 67.1MB. Free memory was 45.1MB in the beginning and 33.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Witness Printer took 39.29ms. Allocated memory is still 67.1MB. Free memory was 33.6MB in the beginning and 31.5MB in the end (delta: 2.1MB). 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: 1.2s, 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, 0.4s 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! [2022-07-21 17:07:22,265 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