./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0234-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3dbbec33 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-0234-1.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 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 13:22:27,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 13:22:27,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 13:22:27,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 13:22:27,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 13:22:27,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 13:22:27,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 13:22:27,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 13:22:27,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 13:22:27,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 13:22:27,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 13:22:27,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 13:22:27,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 13:22:27,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 13:22:27,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 13:22:27,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 13:22:27,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 13:22:27,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 13:22:27,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 13:22:27,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 13:22:27,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 13:22:27,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 13:22:27,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 13:22:27,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 13:22:27,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 13:22:27,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 13:22:27,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 13:22:27,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 13:22:27,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 13:22:27,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 13:22:27,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 13:22:27,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 13:22:27,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 13:22:27,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 13:22:27,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 13:22:27,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 13:22:27,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 13:22:27,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 13:22:27,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 13:22:27,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 13:22:27,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 13:22:27,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-14 13:22:27,939 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 13:22:27,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 13:22:27,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 13:22:27,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 13:22:27,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 13:22:27,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 13:22:27,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 13:22:27,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 13:22:27,942 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 13:22:27,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 13:22:27,943 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 13:22:27,943 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 13:22:27,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 13:22:27,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 13:22:27,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 13:22:27,944 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 13:22:27,944 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 13:22:27,944 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 13:22:27,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 13:22:27,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 13:22:27,945 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 13:22:27,945 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 13:22:27,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 13:22:27,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 13:22:27,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 13:22:27,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 13:22:27,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 13:22:27,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 13:22:27,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 13:22:27,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 13:22:27,947 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 13:22:27,947 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 13:22:27,948 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 13:22:27,948 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 13:22:27,948 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c [2023-02-14 13:22:28,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 13:22:28,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 13:22:28,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 13:22:28,209 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 13:22:28,209 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 13:22:28,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0234-1.i [2023-02-14 13:22:29,374 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 13:22:29,604 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 13:22:29,604 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-1.i [2023-02-14 13:22:29,615 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf1dcb9c1/24b5df3331fb4d33aacdc03b717991ff/FLAGda4290b22 [2023-02-14 13:22:29,628 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf1dcb9c1/24b5df3331fb4d33aacdc03b717991ff [2023-02-14 13:22:29,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 13:22:29,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 13:22:29,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 13:22:29,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 13:22:29,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 13:22:29,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:22:29" (1/1) ... [2023-02-14 13:22:29,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c90199a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:29, skipping insertion in model container [2023-02-14 13:22:29,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:22:29" (1/1) ... [2023-02-14 13:22:29,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 13:22:29,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 13:22:30,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 13:22:30,046 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 13:22:30,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 13:22:30,128 INFO L208 MainTranslator]: Completed translation [2023-02-14 13:22:30,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30 WrapperNode [2023-02-14 13:22:30,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 13:22:30,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 13:22:30,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 13:22:30,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 13:22:30,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (1/1) ... [2023-02-14 13:22:30,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (1/1) ... [2023-02-14 13:22:30,204 INFO L138 Inliner]: procedures = 188, calls = 60, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 203 [2023-02-14 13:22:30,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 13:22:30,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 13:22:30,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 13:22:30,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 13:22:30,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (1/1) ... [2023-02-14 13:22:30,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (1/1) ... [2023-02-14 13:22:30,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (1/1) ... [2023-02-14 13:22:30,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (1/1) ... [2023-02-14 13:22:30,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (1/1) ... [2023-02-14 13:22:30,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (1/1) ... [2023-02-14 13:22:30,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (1/1) ... [2023-02-14 13:22:30,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (1/1) ... [2023-02-14 13:22:30,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 13:22:30,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 13:22:30,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 13:22:30,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 13:22:30,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (1/1) ... [2023-02-14 13:22:30,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 13:22:30,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:22:30,312 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) [2023-02-14 13:22:30,337 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 [2023-02-14 13:22:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 13:22:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 13:22:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 13:22:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 13:22:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2023-02-14 13:22:30,355 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2023-02-14 13:22:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 13:22:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-14 13:22:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 13:22:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 13:22:30,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 13:22:30,530 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 13:22:30,532 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 13:22:30,962 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 13:22:30,968 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 13:22:30,980 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2023-02-14 13:22:30,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:22:30 BoogieIcfgContainer [2023-02-14 13:22:30,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 13:22:30,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 13:22:30,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 13:22:30,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 13:22:30,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 01:22:29" (1/3) ... [2023-02-14 13:22:30,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60890e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:22:30, skipping insertion in model container [2023-02-14 13:22:30,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:22:30" (2/3) ... [2023-02-14 13:22:30,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60890e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:22:30, skipping insertion in model container [2023-02-14 13:22:30,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:22:30" (3/3) ... [2023-02-14 13:22:30,990 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0234-1.i [2023-02-14 13:22:31,019 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 13:22:31,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2023-02-14 13:22:31,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 13:22:31,084 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=PETRI_NET, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f6f7b70, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 13:22:31,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-02-14 13:22:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 108 states have (on average 1.8981481481481481) internal successors, (205), 183 states have internal predecessors, (205), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:22:31,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-14 13:22:31,094 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:22:31,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-14 13:22:31,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:22:31,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:22:31,100 INFO L85 PathProgramCache]: Analyzing trace with hash 930118, now seen corresponding path program 1 times [2023-02-14 13:22:31,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:22:31,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061922061] [2023-02-14 13:22:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:31,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:22:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:22:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:22:31,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:22:31,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061922061] [2023-02-14 13:22:31,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061922061] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:22:31,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:22:31,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:22:31,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396734041] [2023-02-14 13:22:31,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:22:31,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 13:22:31,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:22:31,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 13:22:31,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 13:22:31,299 INFO L87 Difference]: Start difference. First operand has 191 states, 108 states have (on average 1.8981481481481481) internal successors, (205), 183 states have internal predecessors, (205), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-02-14 13:22:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:22:31,324 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2023-02-14 13:22:31,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 13:22:31,326 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-02-14 13:22:31,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:22:31,333 INFO L225 Difference]: With dead ends: 191 [2023-02-14 13:22:31,334 INFO L226 Difference]: Without dead ends: 189 [2023-02-14 13:22:31,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 13:22:31,338 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 13:22:31,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 13:22:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-02-14 13:22:31,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-02-14 13:22:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 107 states have (on average 1.794392523364486) internal successors, (192), 181 states have internal predecessors, (192), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:22:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 204 transitions. [2023-02-14 13:22:31,381 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 204 transitions. Word has length 4 [2023-02-14 13:22:31,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:22:31,381 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 204 transitions. [2023-02-14 13:22:31,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-02-14 13:22:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 204 transitions. [2023-02-14 13:22:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 13:22:31,382 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:22:31,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 13:22:31,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 13:22:31,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:22:31,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:22:31,385 INFO L85 PathProgramCache]: Analyzing trace with hash 889842618, now seen corresponding path program 1 times [2023-02-14 13:22:31,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:22:31,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478311522] [2023-02-14 13:22:31,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:31,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:22:31,401 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:22:31,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521159697] [2023-02-14 13:22:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:31,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:31,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:22:31,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:22:31,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 13:22:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:22:31,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 13:22:31,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:22:31,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 13:22:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:22:31,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:22:31,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:22:31,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478311522] [2023-02-14 13:22:31,570 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:22:31,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521159697] [2023-02-14 13:22:31,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521159697] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:22:31,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:22:31,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:22:31,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483438332] [2023-02-14 13:22:31,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:22:31,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 13:22:31,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:22:31,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 13:22:31,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 13:22:31,574 INFO L87 Difference]: Start difference. First operand 189 states and 204 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 13:22:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:22:31,721 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2023-02-14 13:22:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 13:22:31,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-14 13:22:31,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:22:31,726 INFO L225 Difference]: With dead ends: 188 [2023-02-14 13:22:31,726 INFO L226 Difference]: Without dead ends: 188 [2023-02-14 13:22:31,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 13:22:31,730 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 9 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 13:22:31,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 316 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 13:22:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-02-14 13:22:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-02-14 13:22:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 107 states have (on average 1.7850467289719627) internal successors, (191), 180 states have internal predecessors, (191), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:22:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 203 transitions. [2023-02-14 13:22:31,752 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 203 transitions. Word has length 6 [2023-02-14 13:22:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:22:31,752 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 203 transitions. [2023-02-14 13:22:31,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 13:22:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 203 transitions. [2023-02-14 13:22:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-14 13:22:31,753 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:22:31,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:22:31,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 13:22:31,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:31,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:22:31,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:22:31,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1815317712, now seen corresponding path program 1 times [2023-02-14 13:22:31,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:22:31,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489604902] [2023-02-14 13:22:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:31,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:22:31,977 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:22:31,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83066466] [2023-02-14 13:22:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:31,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:31,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:22:31,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:22:31,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 13:22:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:22:32,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-14 13:22:32,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:22:32,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-14 13:22:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:22:32,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:22:32,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:22:32,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489604902] [2023-02-14 13:22:32,150 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:22:32,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83066466] [2023-02-14 13:22:32,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83066466] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:22:32,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:22:32,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 13:22:32,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667045412] [2023-02-14 13:22:32,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:22:32,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 13:22:32,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:22:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 13:22:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 13:22:32,153 INFO L87 Difference]: Start difference. First operand 188 states and 203 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 13:22:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:22:32,301 INFO L93 Difference]: Finished difference Result 197 states and 212 transitions. [2023-02-14 13:22:32,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 13:22:32,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-14 13:22:32,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:22:32,307 INFO L225 Difference]: With dead ends: 197 [2023-02-14 13:22:32,307 INFO L226 Difference]: Without dead ends: 197 [2023-02-14 13:22:32,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 13:22:32,310 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 16 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 13:22:32,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 519 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 13:22:32,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-14 13:22:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2023-02-14 13:22:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 188 states have internal predecessors, (200), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:22:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2023-02-14 13:22:32,341 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 7 [2023-02-14 13:22:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:22:32,342 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2023-02-14 13:22:32,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 13:22:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2023-02-14 13:22:32,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-14 13:22:32,349 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:22:32,349 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:22:32,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 13:22:32,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-14 13:22:32,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:22:32,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:22:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1660157209, now seen corresponding path program 1 times [2023-02-14 13:22:32,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:22:32,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26990778] [2023-02-14 13:22:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:32,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:22:32,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:22:32,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400064340] [2023-02-14 13:22:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:32,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:32,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:22:32,598 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:22:32,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 13:22:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:22:32,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-14 13:22:32,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:22:32,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 13:22:32,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-02-14 13:22:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-02-14 13:22:33,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:22:33,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:22:33,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26990778] [2023-02-14 13:22:33,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:22:33,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400064340] [2023-02-14 13:22:33,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400064340] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:22:33,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:22:33,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 13:22:33,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858270259] [2023-02-14 13:22:33,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:22:33,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 13:22:33,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:22:33,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 13:22:33,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 13:22:33,211 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-14 13:22:34,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:22:34,948 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2023-02-14 13:22:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 13:22:34,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 66 [2023-02-14 13:22:34,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:22:34,950 INFO L225 Difference]: With dead ends: 209 [2023-02-14 13:22:34,950 INFO L226 Difference]: Without dead ends: 199 [2023-02-14 13:22:34,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-14 13:22:34,951 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 19 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-14 13:22:34,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 685 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-14 13:22:34,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-02-14 13:22:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2023-02-14 13:22:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 117 states have (on average 1.7264957264957266) internal successors, (202), 190 states have internal predecessors, (202), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:22:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 214 transitions. [2023-02-14 13:22:34,959 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 214 transitions. Word has length 66 [2023-02-14 13:22:34,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:22:34,959 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 214 transitions. [2023-02-14 13:22:34,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-14 13:22:34,960 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 214 transitions. [2023-02-14 13:22:34,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-14 13:22:34,961 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:22:34,961 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:22:34,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 13:22:35,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:35,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:22:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:22:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash -359143275, now seen corresponding path program 1 times [2023-02-14 13:22:35,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:22:35,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113372430] [2023-02-14 13:22:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:35,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:22:35,212 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:22:35,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567955089] [2023-02-14 13:22:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:35,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:35,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:22:35,221 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:22:35,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 13:22:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:22:35,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-14 13:22:35,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:22:35,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 13:22:35,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-14 13:22:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 102 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-02-14 13:22:35,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:22:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-14 13:22:35,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:22:35,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113372430] [2023-02-14 13:22:35,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:22:35,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567955089] [2023-02-14 13:22:35,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567955089] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:22:35,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:22:35,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-02-14 13:22:35,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960147095] [2023-02-14 13:22:35,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:22:35,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-14 13:22:35,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:22:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-14 13:22:35,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-02-14 13:22:35,775 INFO L87 Difference]: Start difference. First operand 199 states and 214 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-14 13:22:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:22:36,094 INFO L93 Difference]: Finished difference Result 218 states and 234 transitions. [2023-02-14 13:22:36,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 13:22:36,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2023-02-14 13:22:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:22:36,096 INFO L225 Difference]: With dead ends: 218 [2023-02-14 13:22:36,096 INFO L226 Difference]: Without dead ends: 203 [2023-02-14 13:22:36,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2023-02-14 13:22:36,097 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 52 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:22:36,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 882 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 13:22:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-02-14 13:22:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2023-02-14 13:22:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 121 states have (on average 1.7024793388429753) internal successors, (206), 194 states have internal predecessors, (206), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:22:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions. [2023-02-14 13:22:36,104 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 71 [2023-02-14 13:22:36,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:22:36,104 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions. [2023-02-14 13:22:36,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-14 13:22:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions. [2023-02-14 13:22:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-14 13:22:36,106 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:22:36,107 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:22:36,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-14 13:22:36,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:36,315 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:22:36,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:22:36,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2015734887, now seen corresponding path program 2 times [2023-02-14 13:22:36,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:22:36,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109071597] [2023-02-14 13:22:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:36,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:22:36,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:22:36,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483386415] [2023-02-14 13:22:36,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 13:22:36,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:36,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:22:36,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:22:36,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 13:22:36,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 13:22:36,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:22:36,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-14 13:22:36,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:22:36,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 13:22:37,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-14 13:22:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 135 proven. 10 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-02-14 13:22:37,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:22:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 15 proven. 138 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-02-14 13:22:37,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:22:37,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109071597] [2023-02-14 13:22:37,435 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:22:37,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483386415] [2023-02-14 13:22:37,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483386415] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:22:37,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:22:37,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-02-14 13:22:37,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263082966] [2023-02-14 13:22:37,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:22:37,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-14 13:22:37,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:22:37,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-14 13:22:37,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-02-14 13:22:37,438 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-02-14 13:22:37,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:22:37,960 INFO L93 Difference]: Finished difference Result 243 states and 262 transitions. [2023-02-14 13:22:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-14 13:22:37,961 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-02-14 13:22:37,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:22:37,962 INFO L225 Difference]: With dead ends: 243 [2023-02-14 13:22:37,962 INFO L226 Difference]: Without dead ends: 213 [2023-02-14 13:22:37,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2023-02-14 13:22:37,963 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 54 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:22:37,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1285 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 13:22:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-02-14 13:22:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-02-14 13:22:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 131 states have (on average 1.6488549618320612) internal successors, (216), 204 states have internal predecessors, (216), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:22:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 228 transitions. [2023-02-14 13:22:37,968 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 228 transitions. Word has length 86 [2023-02-14 13:22:37,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:22:37,968 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 228 transitions. [2023-02-14 13:22:37,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-02-14 13:22:37,968 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 228 transitions. [2023-02-14 13:22:37,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-02-14 13:22:37,970 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:22:37,971 INFO L195 NwaCegarLoop]: trace histogram [40, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:22:37,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 13:22:38,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:38,171 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:22:38,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:22:38,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1853789671, now seen corresponding path program 3 times [2023-02-14 13:22:38,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:22:38,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871346945] [2023-02-14 13:22:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:38,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:22:38,240 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:22:38,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911949568] [2023-02-14 13:22:38,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 13:22:38,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:38,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:22:38,245 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:22:38,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 13:22:38,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-14 13:22:38,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:22:38,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-14 13:22:38,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:22:38,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-02-14 13:22:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2023-02-14 13:22:38,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:22:38,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:22:38,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871346945] [2023-02-14 13:22:38,461 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:22:38,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911949568] [2023-02-14 13:22:38,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911949568] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:22:38,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:22:38,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 13:22:38,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595328671] [2023-02-14 13:22:38,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:22:38,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 13:22:38,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:22:38,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 13:22:38,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 13:22:38,465 INFO L87 Difference]: Start difference. First operand 213 states and 228 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-14 13:22:38,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:22:38,564 INFO L93 Difference]: Finished difference Result 212 states and 227 transitions. [2023-02-14 13:22:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 13:22:38,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 106 [2023-02-14 13:22:38,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:22:38,566 INFO L225 Difference]: With dead ends: 212 [2023-02-14 13:22:38,566 INFO L226 Difference]: Without dead ends: 212 [2023-02-14 13:22:38,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 13:22:38,567 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 16 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 13:22:38,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 503 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 13:22:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-02-14 13:22:38,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-02-14 13:22:38,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 131 states have (on average 1.6412213740458015) internal successors, (215), 203 states have internal predecessors, (215), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:22:38,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 227 transitions. [2023-02-14 13:22:38,575 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 227 transitions. Word has length 106 [2023-02-14 13:22:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:22:38,576 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 227 transitions. [2023-02-14 13:22:38,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-14 13:22:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 227 transitions. [2023-02-14 13:22:38,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-02-14 13:22:38,581 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:22:38,582 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:22:38,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 13:22:38,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:38,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:22:38,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:22:38,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1349401770, now seen corresponding path program 1 times [2023-02-14 13:22:38,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:22:38,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074204814] [2023-02-14 13:22:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:38,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:22:38,848 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:22:38,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841650063] [2023-02-14 13:22:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:38,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:38,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:22:38,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:22:38,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 13:22:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:22:39,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-14 13:22:39,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:22:39,260 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1495 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_1495))) is different from true [2023-02-14 13:22:39,404 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-14 13:22:39,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-02-14 13:22:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 709 proven. 87 refuted. 0 times theorem prover too weak. 754 trivial. 1 not checked. [2023-02-14 13:22:39,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:22:39,698 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-14 13:22:39,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2023-02-14 13:22:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 709 proven. 88 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2023-02-14 13:22:39,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:22:39,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074204814] [2023-02-14 13:22:39,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:22:39,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841650063] [2023-02-14 13:22:39,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841650063] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:22:39,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:22:39,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 13 [2023-02-14 13:22:39,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562416531] [2023-02-14 13:22:39,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:22:39,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-14 13:22:39,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:22:39,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-14 13:22:39,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2023-02-14 13:22:39,720 INFO L87 Difference]: Start difference. First operand 212 states and 227 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-14 13:22:40,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:22:40,462 INFO L93 Difference]: Finished difference Result 249 states and 268 transitions. [2023-02-14 13:22:40,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 13:22:40,464 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 121 [2023-02-14 13:22:40,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:22:40,465 INFO L225 Difference]: With dead ends: 249 [2023-02-14 13:22:40,465 INFO L226 Difference]: Without dead ends: 249 [2023-02-14 13:22:40,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=261, Unknown=1, NotChecked=34, Total=380 [2023-02-14 13:22:40,466 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 125 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 22 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-14 13:22:40,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1243 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 767 Invalid, 25 Unknown, 216 Unchecked, 0.6s Time] [2023-02-14 13:22:40,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-02-14 13:22:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 210. [2023-02-14 13:22:40,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 131 states have (on average 1.6259541984732824) internal successors, (213), 201 states have internal predecessors, (213), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:22:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 225 transitions. [2023-02-14 13:22:40,471 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 225 transitions. Word has length 121 [2023-02-14 13:22:40,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:22:40,472 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 225 transitions. [2023-02-14 13:22:40,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-14 13:22:40,472 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 225 transitions. [2023-02-14 13:22:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-02-14 13:22:40,479 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:22:40,480 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:22:40,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-14 13:22:40,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:40,688 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:22:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:22:40,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1349401771, now seen corresponding path program 1 times [2023-02-14 13:22:40,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:22:40,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928029526] [2023-02-14 13:22:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:40,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:22:40,768 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:22:40,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907369371] [2023-02-14 13:22:40,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:22:40,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:22:40,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:22:40,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:22:40,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 13:22:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:22:42,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 74 conjunts are in the unsatisfiable core [2023-02-14 13:22:42,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:22:42,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 13:22:54,267 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2100 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2100)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-02-14 13:22:54,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 13:22:54,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 13:22:54,473 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 13:22:54,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-14 13:22:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 590 proven. 316 refuted. 0 times theorem prover too weak. 494 trivial. 151 not checked. [2023-02-14 13:22:54,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:22:57,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:22:57,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928029526] [2023-02-14 13:22:57,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:22:57,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907369371] [2023-02-14 13:22:57,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907369371] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:22:57,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-14 13:22:57,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-02-14 13:22:57,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046920237] [2023-02-14 13:22:57,372 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-14 13:22:57,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-14 13:22:57,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:22:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-14 13:22:57,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=735, Unknown=5, NotChecked=54, Total=870 [2023-02-14 13:22:57,373 INFO L87 Difference]: Start difference. First operand 210 states and 225 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-14 13:22:59,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:23:01,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:23:05,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:23:07,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:23:09,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:23:11,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:23:14,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:23:16,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:23:18,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:23:20,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:23:31,513 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 13:23:39,928 WARN L233 SmtUtils]: Spent 8.34s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 13:23:51,239 WARN L233 SmtUtils]: Spent 10.16s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 13:23:57,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:23:59,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:24:01,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:24:02,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:24:02,053 INFO L93 Difference]: Finished difference Result 253 states and 275 transitions. [2023-02-14 13:24:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-14 13:24:02,054 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 121 [2023-02-14 13:24:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:24:02,056 INFO L225 Difference]: With dead ends: 253 [2023-02-14 13:24:02,056 INFO L226 Difference]: Without dead ends: 253 [2023-02-14 13:24:02,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 46.8s TimeCoverageRelationStatistics Valid=187, Invalid=1615, Unknown=8, NotChecked=82, Total=1892 [2023-02-14 13:24:02,058 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 233 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 11 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2023-02-14 13:24:02,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 2193 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2215 Invalid, 13 Unknown, 196 Unchecked, 31.7s Time] [2023-02-14 13:24:02,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-02-14 13:24:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 208. [2023-02-14 13:24:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 131 states have (on average 1.6106870229007633) internal successors, (211), 199 states have internal predecessors, (211), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:24:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2023-02-14 13:24:02,063 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 121 [2023-02-14 13:24:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:24:02,064 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2023-02-14 13:24:02,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-14 13:24:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2023-02-14 13:24:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-02-14 13:24:02,065 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:24:02,065 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:24:02,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-14 13:24:02,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-02-14 13:24:02,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:24:02,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:24:02,277 INFO L85 PathProgramCache]: Analyzing trace with hash -305022197, now seen corresponding path program 1 times [2023-02-14 13:24:02,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:24:02,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139785475] [2023-02-14 13:24:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:24:02,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:24:02,337 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:24:02,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499570202] [2023-02-14 13:24:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:24:02,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:24:02,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:24:02,345 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:24:02,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-14 13:24:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:24:02,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-14 13:24:02,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:24:02,775 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2716 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2716))) is different from true [2023-02-14 13:24:02,888 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-14 13:24:02,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-02-14 13:24:02,914 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2717 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2717))) is different from true [2023-02-14 13:24:03,011 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-14 13:24:03,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-02-14 13:24:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 800 proven. 174 refuted. 0 times theorem prover too weak. 574 trivial. 3 not checked. [2023-02-14 13:24:03,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:24:03,379 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-14 13:24:03,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2023-02-14 13:24:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 800 proven. 176 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-02-14 13:24:03,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:24:03,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139785475] [2023-02-14 13:24:03,394 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:24:03,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499570202] [2023-02-14 13:24:03,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499570202] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:24:03,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:24:03,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 15 [2023-02-14 13:24:03,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208230665] [2023-02-14 13:24:03,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:24:03,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-14 13:24:03,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:24:03,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-14 13:24:03,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=154, Unknown=2, NotChecked=50, Total=240 [2023-02-14 13:24:03,398 INFO L87 Difference]: Start difference. First operand 208 states and 223 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-14 13:24:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:24:03,979 INFO L93 Difference]: Finished difference Result 244 states and 263 transitions. [2023-02-14 13:24:03,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-14 13:24:03,979 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 123 [2023-02-14 13:24:03,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:24:03,980 INFO L225 Difference]: With dead ends: 244 [2023-02-14 13:24:03,981 INFO L226 Difference]: Without dead ends: 244 [2023-02-14 13:24:03,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 224 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=372, Unknown=2, NotChecked=82, Total=552 [2023-02-14 13:24:03,982 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 221 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 460 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-14 13:24:03,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1250 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 861 Invalid, 0 Unknown, 460 Unchecked, 0.4s Time] [2023-02-14 13:24:03,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-02-14 13:24:03,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 205. [2023-02-14 13:24:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 131 states have (on average 1.5877862595419847) internal successors, (208), 196 states have internal predecessors, (208), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:24:03,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 220 transitions. [2023-02-14 13:24:03,987 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 220 transitions. Word has length 123 [2023-02-14 13:24:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:24:03,987 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 220 transitions. [2023-02-14 13:24:03,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-14 13:24:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 220 transitions. [2023-02-14 13:24:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-02-14 13:24:03,989 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:24:03,989 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:24:04,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-14 13:24:04,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-14 13:24:04,197 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:24:04,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:24:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash -305022196, now seen corresponding path program 1 times [2023-02-14 13:24:04,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:24:04,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3926158] [2023-02-14 13:24:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:24:04,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:24:04,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:24:04,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678389571] [2023-02-14 13:24:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:24:04,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:24:04,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:24:04,243 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:24:04,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-14 13:24:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:24:06,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 79 conjunts are in the unsatisfiable core [2023-02-14 13:24:06,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:24:06,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 13:24:11,736 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3337 Int) (v_ArrVal_3338 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3337)) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3338) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-02-14 13:24:11,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 13:24:11,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 13:24:12,012 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-14 13:24:12,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-14 13:24:12,159 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3339 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3339) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-02-14 13:24:12,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 13:24:12,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 13:24:12,334 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 13:24:12,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-14 13:24:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 696 proven. 160 refuted. 0 times theorem prover too weak. 359 trivial. 336 not checked. [2023-02-14 13:24:12,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:24:13,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:24:13,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3926158] [2023-02-14 13:24:13,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:24:13,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678389571] [2023-02-14 13:24:13,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678389571] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:24:13,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-14 13:24:13,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-02-14 13:24:13,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951000163] [2023-02-14 13:24:13,160 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-14 13:24:13,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-14 13:24:13,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:24:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-14 13:24:13,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=495, Unknown=3, NotChecked=90, Total=650 [2023-02-14 13:24:13,161 INFO L87 Difference]: Start difference. First operand 205 states and 220 transitions. Second operand has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-14 13:24:15,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:24:17,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:24:22,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:24:24,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:24:26,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:24:28,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:24:30,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:24:45,197 WARN L233 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 53 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 13:25:00,805 WARN L233 SmtUtils]: Spent 14.76s on a formula simplification. DAG size of input: 62 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 13:25:22,635 WARN L233 SmtUtils]: Spent 20.78s on a formula simplification. DAG size of input: 71 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 13:25:28,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:25:28,750 INFO L93 Difference]: Finished difference Result 241 states and 260 transitions. [2023-02-14 13:25:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-14 13:25:28,750 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 123 [2023-02-14 13:25:28,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:25:28,751 INFO L225 Difference]: With dead ends: 241 [2023-02-14 13:25:28,752 INFO L226 Difference]: Without dead ends: 241 [2023-02-14 13:25:28,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 60.3s TimeCoverageRelationStatistics Valid=163, Invalid=1171, Unknown=6, NotChecked=142, Total=1482 [2023-02-14 13:25:28,753 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 323 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 16 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 391 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-02-14 13:25:28,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1797 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1871 Invalid, 7 Unknown, 391 Unchecked, 20.5s Time] [2023-02-14 13:25:28,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-02-14 13:25:28,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 203. [2023-02-14 13:25:28,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 131 states have (on average 1.5725190839694656) internal successors, (206), 194 states have internal predecessors, (206), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:25:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions. [2023-02-14 13:25:28,759 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 123 [2023-02-14 13:25:28,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:25:28,759 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions. [2023-02-14 13:25:28,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-14 13:25:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions. [2023-02-14 13:25:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-14 13:25:28,760 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:25:28,761 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:25:28,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-14 13:25:28,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-14 13:25:28,973 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:25:28,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:25:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1713867913, now seen corresponding path program 1 times [2023-02-14 13:25:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:25:28,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74534877] [2023-02-14 13:25:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:25:28,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:25:29,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:25:29,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637578276] [2023-02-14 13:25:29,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:25:29,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:25:29,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:25:29,041 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:25:29,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-14 13:25:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:25:29,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-14 13:25:29,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:25:29,552 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3979 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3979)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-02-14 13:25:29,619 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-14 13:25:29,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-14 13:25:29,633 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3980 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_3980))) is different from true [2023-02-14 13:25:29,655 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3980 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_3980))) is different from true [2023-02-14 13:25:29,658 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3980 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_3980))) is different from true [2023-02-14 13:25:29,662 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3980 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_3980))) is different from true [2023-02-14 13:25:29,675 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 13:25:29,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-02-14 13:25:29,710 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3981 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3981))) is different from true [2023-02-14 13:25:29,812 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 13:25:29,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2023-02-14 13:25:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 713 proven. 87 refuted. 0 times theorem prover too weak. 310 trivial. 441 not checked. [2023-02-14 13:25:29,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:25:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:25:30,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74534877] [2023-02-14 13:25:30,479 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:25:30,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637578276] [2023-02-14 13:25:30,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637578276] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:25:30,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-14 13:25:30,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-02-14 13:25:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419427208] [2023-02-14 13:25:30,480 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-14 13:25:30,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-14 13:25:30,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:25:30,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-14 13:25:30,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=484, Unknown=6, NotChecked=294, Total=870 [2023-02-14 13:25:30,481 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-14 13:25:31,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:25:31,198 INFO L93 Difference]: Finished difference Result 236 states and 254 transitions. [2023-02-14 13:25:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-14 13:25:31,198 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 130 [2023-02-14 13:25:31,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:25:31,200 INFO L225 Difference]: With dead ends: 236 [2023-02-14 13:25:31,200 INFO L226 Difference]: Without dead ends: 236 [2023-02-14 13:25:31,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 149 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=779, Unknown=6, NotChecked=378, Total=1332 [2023-02-14 13:25:31,201 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 466 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 39 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 1342 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-14 13:25:31,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1267 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 849 Invalid, 31 Unknown, 1342 Unchecked, 0.5s Time] [2023-02-14 13:25:31,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-02-14 13:25:31,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 200. [2023-02-14 13:25:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 131 states have (on average 1.549618320610687) internal successors, (203), 191 states have internal predecessors, (203), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-14 13:25:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 215 transitions. [2023-02-14 13:25:31,206 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 215 transitions. Word has length 130 [2023-02-14 13:25:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:25:31,207 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 215 transitions. [2023-02-14 13:25:31,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-14 13:25:31,207 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 215 transitions. [2023-02-14 13:25:31,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-14 13:25:31,208 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:25:31,208 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:25:31,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-14 13:25:31,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-14 13:25:31,420 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-14 13:25:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:25:31,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1713867914, now seen corresponding path program 1 times [2023-02-14 13:25:31,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 13:25:31,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109506345] [2023-02-14 13:25:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:25:31,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 13:25:31,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 13:25:31,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799643919] [2023-02-14 13:25:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:25:31,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 13:25:31,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:25:31,460 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 13:25:31,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-14 13:25:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:25:34,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 142 conjunts are in the unsatisfiable core [2023-02-14 13:25:34,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:25:34,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 13:25:47,571 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-14 13:25:47,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-14 13:25:47,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 13:25:50,809 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-02-14 13:25:50,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 13:25:50,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 13:25:52,874 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_4631 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (let ((.cse0 (* |zalloc_or_die_calloc_model_~nmemb#1| |zalloc_or_die_calloc_model_~size#1|))) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_4631) |c_#length|) (<= (mod .cse0 4294967296) v_ArrVal_4631) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| .cse0)))) is different from true [2023-02-14 13:25:54,895 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_4631 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (let ((.cse0 (mod (* |zalloc_or_die_calloc_model_~nmemb#1| |zalloc_or_die_calloc_model_~size#1|) 4294967296))) (and (< 7 .cse0) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_4631) |c_#length|) (<= .cse0 v_ArrVal_4631)))) is different from true [2023-02-14 13:25:55,546 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 13:25:55,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2023-02-14 13:25:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 475 proven. 875 refuted. 0 times theorem prover too weak. 138 trivial. 63 not checked. [2023-02-14 13:25:57,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:26:01,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 13:26:01,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109506345] [2023-02-14 13:26:01,164 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 13:26:01,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799643919] [2023-02-14 13:26:01,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799643919] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:26:01,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-14 13:26:01,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2023-02-14 13:26:01,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544443205] [2023-02-14 13:26:01,164 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-14 13:26:01,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-14 13:26:01,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 13:26:01,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-14 13:26:01,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2484, Unknown=20, NotChecked=202, Total=2862 [2023-02-14 13:26:01,166 INFO L87 Difference]: Start difference. First operand 200 states and 215 transitions. Second operand has 52 states, 49 states have (on average 1.816326530612245) internal successors, (89), 47 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-14 13:26:03,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:26:05,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:26:09,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:26:11,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:26:15,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:26:19,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:26:23,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:26:28,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:26:32,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:26:36,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-14 13:26:40,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]