./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 574ddb4e 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-?-574ddb4 [2023-02-17 08:19:01,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 08:19:01,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 08:19:01,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 08:19:01,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 08:19:01,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 08:19:01,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 08:19:01,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 08:19:01,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 08:19:01,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 08:19:01,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 08:19:01,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 08:19:01,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 08:19:01,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 08:19:01,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 08:19:01,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 08:19:01,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 08:19:01,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 08:19:01,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 08:19:01,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 08:19:01,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 08:19:01,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 08:19:01,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 08:19:01,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 08:19:01,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 08:19:01,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 08:19:01,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 08:19:01,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 08:19:01,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 08:19:01,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 08:19:01,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 08:19:01,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 08:19:01,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 08:19:01,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 08:19:01,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 08:19:01,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 08:19:01,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 08:19:01,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 08:19:01,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 08:19:01,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 08:19:01,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 08:19:01,548 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 08:19:01,573 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 08:19:01,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 08:19:01,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 08:19:01,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 08:19:01,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 08:19:01,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 08:19:01,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 08:19:01,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 08:19:01,577 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 08:19:01,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 08:19:01,578 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 08:19:01,578 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 08:19:01,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 08:19:01,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 08:19:01,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 08:19:01,579 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 08:19:01,579 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 08:19:01,579 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 08:19:01,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 08:19:01,579 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 08:19:01,579 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 08:19:01,580 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 08:19:01,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 08:19:01,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 08:19:01,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 08:19:01,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 08:19:01,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 08:19:01,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 08:19:01,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 08:19:01,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 08:19:01,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 08:19:01,582 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 08:19:01,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 08:19:01,582 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 08:19:01,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c [2023-02-17 08:19:01,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 08:19:01,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 08:19:01,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 08:19:01,893 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 08:19:01,894 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 08:19:01,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0234-1.i [2023-02-17 08:19:03,062 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 08:19:03,335 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 08:19:03,337 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-1.i [2023-02-17 08:19:03,354 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56013e16b/b32bddaaf86f442eb2fe6821899d57eb/FLAGa84219419 [2023-02-17 08:19:03,371 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56013e16b/b32bddaaf86f442eb2fe6821899d57eb [2023-02-17 08:19:03,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 08:19:03,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 08:19:03,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 08:19:03,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 08:19:03,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 08:19:03,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:03,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6388837d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03, skipping insertion in model container [2023-02-17 08:19:03,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:03,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 08:19:03,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 08:19:03,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 08:19:03,839 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 08:19:03,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 08:19:03,932 INFO L208 MainTranslator]: Completed translation [2023-02-17 08:19:03,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03 WrapperNode [2023-02-17 08:19:03,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 08:19:03,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 08:19:03,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 08:19:03,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 08:19:03,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:03,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:04,005 INFO L138 Inliner]: procedures = 188, calls = 60, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 203 [2023-02-17 08:19:04,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 08:19:04,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 08:19:04,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 08:19:04,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 08:19:04,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:04,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:04,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:04,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:04,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:04,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:04,032 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:04,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:04,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 08:19:04,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 08:19:04,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 08:19:04,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 08:19:04,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (1/1) ... [2023-02-17 08:19:04,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 08:19:04,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:19:04,088 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) [2023-02-17 08:19:04,113 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 [2023-02-17 08:19:04,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 08:19:04,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 08:19:04,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 08:19:04,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 08:19:04,130 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2023-02-17 08:19:04,130 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2023-02-17 08:19:04,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 08:19:04,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 08:19:04,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 08:19:04,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 08:19:04,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 08:19:04,294 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 08:19:04,296 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 08:19:04,758 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 08:19:04,768 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 08:19:04,768 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2023-02-17 08:19:04,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:19:04 BoogieIcfgContainer [2023-02-17 08:19:04,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 08:19:04,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 08:19:04,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 08:19:04,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 08:19:04,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 08:19:03" (1/3) ... [2023-02-17 08:19:04,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e99a581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:19:04, skipping insertion in model container [2023-02-17 08:19:04,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:19:03" (2/3) ... [2023-02-17 08:19:04,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e99a581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:19:04, skipping insertion in model container [2023-02-17 08:19:04,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:19:04" (3/3) ... [2023-02-17 08:19:04,779 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0234-1.i [2023-02-17 08:19:04,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 08:19:04,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2023-02-17 08:19:04,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 08:19:04,849 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;@219054ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 08:19:04,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-02-17 08:19:04,854 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) [2023-02-17 08:19:04,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-17 08:19:04,858 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:19:04,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-17 08:19:04,859 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)] === [2023-02-17 08:19:04,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:19:04,862 INFO L85 PathProgramCache]: Analyzing trace with hash 930118, now seen corresponding path program 1 times [2023-02-17 08:19:04,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:19:04,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449091744] [2023-02-17 08:19:04,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:04,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:19:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:19:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:19:04,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:19:04,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449091744] [2023-02-17 08:19:04,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449091744] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:19:04,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:19:04,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 08:19:04,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213797215] [2023-02-17 08:19:04,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:19:04,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 08:19:04,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:19:05,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 08:19:05,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 08:19:05,013 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) [2023-02-17 08:19:05,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:19:05,054 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2023-02-17 08:19:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 08:19:05,057 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 [2023-02-17 08:19:05,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:19:05,070 INFO L225 Difference]: With dead ends: 191 [2023-02-17 08:19:05,071 INFO L226 Difference]: Without dead ends: 189 [2023-02-17 08:19:05,073 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 [2023-02-17 08:19:05,078 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 [2023-02-17 08:19:05,078 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] [2023-02-17 08:19:05,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-02-17 08:19:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-02-17 08:19:05,127 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) [2023-02-17 08:19:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 204 transitions. [2023-02-17 08:19:05,138 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 204 transitions. Word has length 4 [2023-02-17 08:19:05,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:19:05,139 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 204 transitions. [2023-02-17 08:19:05,139 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) [2023-02-17 08:19:05,139 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 204 transitions. [2023-02-17 08:19:05,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 08:19:05,140 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:19:05,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 08:19:05,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 08:19:05,143 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)] === [2023-02-17 08:19:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:19:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash 889842618, now seen corresponding path program 1 times [2023-02-17 08:19:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:19:05,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410783529] [2023-02-17 08:19:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:05,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:19:05,183 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:19:05,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768771107] [2023-02-17 08:19:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:05,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:19:05,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:19:05,201 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) [2023-02-17 08:19:05,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 08:19:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:19:05,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 08:19:05,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:19:05,391 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 [2023-02-17 08:19:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:19:05,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:19:05,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:19:05,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410783529] [2023-02-17 08:19:05,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:19:05,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768771107] [2023-02-17 08:19:05,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768771107] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:19:05,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:19:05,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 08:19:05,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495267407] [2023-02-17 08:19:05,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:19:05,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 08:19:05,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:19:05,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 08:19:05,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 08:19:05,405 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) [2023-02-17 08:19:05,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:19:05,552 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2023-02-17 08:19:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 08:19:05,555 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 [2023-02-17 08:19:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:19:05,558 INFO L225 Difference]: With dead ends: 188 [2023-02-17 08:19:05,559 INFO L226 Difference]: Without dead ends: 188 [2023-02-17 08:19:05,559 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 [2023-02-17 08:19:05,561 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 [2023-02-17 08:19:05,561 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] [2023-02-17 08:19:05,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-02-17 08:19:05,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-02-17 08:19:05,583 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) [2023-02-17 08:19:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 203 transitions. [2023-02-17 08:19:05,586 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 203 transitions. Word has length 6 [2023-02-17 08:19:05,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:19:05,586 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 203 transitions. [2023-02-17 08:19:05,586 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) [2023-02-17 08:19:05,587 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 203 transitions. [2023-02-17 08:19:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 08:19:05,587 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:19:05,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 08:19:05,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 08:19:05,795 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 [2023-02-17 08:19:05,796 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)] === [2023-02-17 08:19:05,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:19:05,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1815317712, now seen corresponding path program 1 times [2023-02-17 08:19:05,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:19:05,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112111310] [2023-02-17 08:19:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:05,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:19:05,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:19:05,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334025641] [2023-02-17 08:19:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:05,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:19:05,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:19:05,817 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) [2023-02-17 08:19:05,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 08:19:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:19:05,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-17 08:19:05,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:19:05,926 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 [2023-02-17 08:19:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 08:19:05,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:19:05,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:19:05,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112111310] [2023-02-17 08:19:05,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:19:05,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334025641] [2023-02-17 08:19:05,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334025641] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:19:05,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:19:05,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 08:19:05,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475120988] [2023-02-17 08:19:05,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:19:05,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 08:19:05,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:19:05,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 08:19:05,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 08:19:05,935 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) [2023-02-17 08:19:06,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:19:06,069 INFO L93 Difference]: Finished difference Result 197 states and 212 transitions. [2023-02-17 08:19:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 08:19:06,070 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 [2023-02-17 08:19:06,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:19:06,071 INFO L225 Difference]: With dead ends: 197 [2023-02-17 08:19:06,071 INFO L226 Difference]: Without dead ends: 197 [2023-02-17 08:19:06,072 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 [2023-02-17 08:19:06,072 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 [2023-02-17 08:19:06,073 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] [2023-02-17 08:19:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-02-17 08:19:06,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2023-02-17 08:19:06,081 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) [2023-02-17 08:19:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2023-02-17 08:19:06,082 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 7 [2023-02-17 08:19:06,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:19:06,082 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2023-02-17 08:19:06,083 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) [2023-02-17 08:19:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2023-02-17 08:19:06,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-17 08:19:06,084 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:19:06,085 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] [2023-02-17 08:19:06,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 08:19:06,291 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 [2023-02-17 08:19:06,292 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)] === [2023-02-17 08:19:06,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:19:06,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1660157209, now seen corresponding path program 1 times [2023-02-17 08:19:06,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:19:06,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605716192] [2023-02-17 08:19:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:06,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:19:06,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:19:06,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048170164] [2023-02-17 08:19:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:06,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:19:06,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:19:06,321 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) [2023-02-17 08:19:06,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 08:19:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:19:06,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-17 08:19:06,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:19:06,580 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 [2023-02-17 08:19:06,678 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 19 treesize of output 15 [2023-02-17 08:19:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-02-17 08:19:06,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:19:06,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:19:06,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605716192] [2023-02-17 08:19:06,809 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:19:06,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048170164] [2023-02-17 08:19:06,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048170164] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:19:06,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:19:06,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 08:19:06,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821301255] [2023-02-17 08:19:06,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:19:06,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 08:19:06,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:19:06,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 08:19:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 08:19:06,812 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-17 08:19:08,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:19:11,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:19:13,769 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] [2023-02-17 08:19:13,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:19:13,907 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2023-02-17 08:19:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 08:19:13,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2023-02-17 08:19:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:19:13,909 INFO L225 Difference]: With dead ends: 209 [2023-02-17 08:19:13,909 INFO L226 Difference]: Without dead ends: 199 [2023-02-17 08:19:13,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-17 08:19:13,910 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 19 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-02-17 08:19:13,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 685 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 4 Unknown, 0 Unchecked, 7.0s Time] [2023-02-17 08:19:13,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-02-17 08:19:13,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2023-02-17 08:19:13,921 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) [2023-02-17 08:19:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 214 transitions. [2023-02-17 08:19:13,922 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 214 transitions. Word has length 66 [2023-02-17 08:19:13,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:19:13,922 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 214 transitions. [2023-02-17 08:19:13,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-17 08:19:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 214 transitions. [2023-02-17 08:19:13,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-17 08:19:13,925 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:19:13,925 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] [2023-02-17 08:19:13,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 08:19:14,133 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 [2023-02-17 08:19:14,133 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)] === [2023-02-17 08:19:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:19:14,134 INFO L85 PathProgramCache]: Analyzing trace with hash -359143275, now seen corresponding path program 1 times [2023-02-17 08:19:14,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:19:14,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915835967] [2023-02-17 08:19:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:14,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:19:14,172 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:19:14,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49781677] [2023-02-17 08:19:14,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:14,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:19:14,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:19:14,174 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) [2023-02-17 08:19:14,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 08:19:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:19:14,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-17 08:19:14,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:19:14,418 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 [2023-02-17 08:19:14,424 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 17 treesize of output 13 [2023-02-17 08:19:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-02-17 08:19:14,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 08:19:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-17 08:19:14,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:19:14,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915835967] [2023-02-17 08:19:14,616 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:19:14,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49781677] [2023-02-17 08:19:14,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49781677] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 08:19:14,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 08:19:14,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-02-17 08:19:14,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804683808] [2023-02-17 08:19:14,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 08:19:14,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-17 08:19:14,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:19:14,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-17 08:19:14,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-02-17 08:19:14,619 INFO L87 Difference]: Start difference. First operand 199 states and 214 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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) [2023-02-17 08:19:14,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:19:14,893 INFO L93 Difference]: Finished difference Result 225 states and 242 transitions. [2023-02-17 08:19:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 08:19:14,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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 71 [2023-02-17 08:19:14,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:19:14,895 INFO L225 Difference]: With dead ends: 225 [2023-02-17 08:19:14,895 INFO L226 Difference]: Without dead ends: 205 [2023-02-17 08:19:14,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2023-02-17 08:19:14,896 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 28 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 08:19:14,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 820 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 08:19:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-02-17 08:19:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2023-02-17 08:19:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 123 states have (on average 1.6910569105691058) 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) [2023-02-17 08:19:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 220 transitions. [2023-02-17 08:19:14,902 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 220 transitions. Word has length 71 [2023-02-17 08:19:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:19:14,902 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 220 transitions. [2023-02-17 08:19:14,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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) [2023-02-17 08:19:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 220 transitions. [2023-02-17 08:19:14,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-17 08:19:14,905 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:19:14,905 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] [2023-02-17 08:19:14,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 08:19:15,105 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 [2023-02-17 08:19:15,106 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)] === [2023-02-17 08:19:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:19:15,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2015734887, now seen corresponding path program 2 times [2023-02-17 08:19:15,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:19:15,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746360812] [2023-02-17 08:19:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:15,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:19:15,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:19:15,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58464785] [2023-02-17 08:19:15,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 08:19:15,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:19:15,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:19:15,136 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) [2023-02-17 08:19:15,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 08:19:15,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 08:19:15,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 08:19:15,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 08:19:15,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:19:15,858 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 [2023-02-17 08:19:15,870 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 17 treesize of output 13 [2023-02-17 08:19:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 220 proven. 36 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-02-17 08:19:15,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 08:19:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 47 proven. 106 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-02-17 08:19:16,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:19:16,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746360812] [2023-02-17 08:19:16,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:19:16,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58464785] [2023-02-17 08:19:16,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58464785] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 08:19:16,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 08:19:16,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2023-02-17 08:19:16,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781541759] [2023-02-17 08:19:16,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 08:19:16,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 08:19:16,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:19:16,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 08:19:16,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-02-17 08:19:16,155 INFO L87 Difference]: Start difference. First operand 205 states and 220 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-17 08:19:16,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:19:16,627 INFO L93 Difference]: Finished difference Result 233 states and 252 transitions. [2023-02-17 08:19:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 08:19:16,627 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2023-02-17 08:19:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:19:16,629 INFO L225 Difference]: With dead ends: 233 [2023-02-17 08:19:16,629 INFO L226 Difference]: Without dead ends: 213 [2023-02-17 08:19:16,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2023-02-17 08:19:16,630 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 44 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 08:19:16,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 2200 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 08:19:16,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-02-17 08:19:16,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-02-17 08:19:16,634 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) [2023-02-17 08:19:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 228 transitions. [2023-02-17 08:19:16,635 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 228 transitions. Word has length 86 [2023-02-17 08:19:16,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:19:16,635 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 228 transitions. [2023-02-17 08:19:16,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-17 08:19:16,636 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 228 transitions. [2023-02-17 08:19:16,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-02-17 08:19:16,637 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:19:16,637 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] [2023-02-17 08:19:16,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 08:19:16,853 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 [2023-02-17 08:19:16,853 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)] === [2023-02-17 08:19:16,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:19:16,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1853789671, now seen corresponding path program 3 times [2023-02-17 08:19:16,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:19:16,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662897786] [2023-02-17 08:19:16,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:16,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:19:16,918 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:19:16,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883520417] [2023-02-17 08:19:16,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 08:19:16,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:19:16,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:19:16,921 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) [2023-02-17 08:19:16,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 08:19:17,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-17 08:19:17,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 08:19:17,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-17 08:19:17,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:19:17,139 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 [2023-02-17 08:19:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2023-02-17 08:19:17,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 08:19:17,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:19:17,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662897786] [2023-02-17 08:19:17,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:19:17,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883520417] [2023-02-17 08:19:17,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883520417] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 08:19:17,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 08:19:17,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 08:19:17,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095041725] [2023-02-17 08:19:17,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 08:19:17,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 08:19:17,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:19:17,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 08:19:17,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 08:19:17,151 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) [2023-02-17 08:19:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:19:17,260 INFO L93 Difference]: Finished difference Result 212 states and 227 transitions. [2023-02-17 08:19:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 08:19:17,261 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 [2023-02-17 08:19:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:19:17,262 INFO L225 Difference]: With dead ends: 212 [2023-02-17 08:19:17,262 INFO L226 Difference]: Without dead ends: 212 [2023-02-17 08:19:17,262 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 [2023-02-17 08:19:17,263 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 [2023-02-17 08:19:17,263 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] [2023-02-17 08:19:17,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-02-17 08:19:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-02-17 08:19:17,266 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) [2023-02-17 08:19:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 227 transitions. [2023-02-17 08:19:17,267 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 227 transitions. Word has length 106 [2023-02-17 08:19:17,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:19:17,267 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 227 transitions. [2023-02-17 08:19:17,268 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) [2023-02-17 08:19:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 227 transitions. [2023-02-17 08:19:17,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-02-17 08:19:17,269 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:19:17,269 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] [2023-02-17 08:19:17,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 08:19:17,469 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 [2023-02-17 08:19:17,470 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)] === [2023-02-17 08:19:17,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:19:17,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1349401770, now seen corresponding path program 1 times [2023-02-17 08:19:17,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:19:17,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464871231] [2023-02-17 08:19:17,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:17,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:19:17,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:19:17,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067388262] [2023-02-17 08:19:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:17,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:19:17,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:19:17,519 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) [2023-02-17 08:19:17,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 08:19:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:19:17,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-17 08:19:17,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:19:17,890 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1497 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_1497))) is different from true [2023-02-17 08:19:17,951 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:19:17,952 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 28 [2023-02-17 08:19:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 709 proven. 87 refuted. 0 times theorem prover too weak. 754 trivial. 1 not checked. [2023-02-17 08:19:17,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 08:19:18,064 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:19:18,065 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 16 [2023-02-17 08:19:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 709 proven. 88 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2023-02-17 08:19:18,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:19:18,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464871231] [2023-02-17 08:19:18,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:19:18,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067388262] [2023-02-17 08:19:18,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067388262] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 08:19:18,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 08:19:18,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 13 [2023-02-17 08:19:18,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816519250] [2023-02-17 08:19:18,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 08:19:18,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 08:19:18,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:19:18,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 08:19:18,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2023-02-17 08:19:18,093 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) [2023-02-17 08:19:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:19:18,700 INFO L93 Difference]: Finished difference Result 249 states and 268 transitions. [2023-02-17 08:19:18,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 08:19:18,700 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 [2023-02-17 08:19:18,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:19:18,702 INFO L225 Difference]: With dead ends: 249 [2023-02-17 08:19:18,702 INFO L226 Difference]: Without dead ends: 249 [2023-02-17 08:19:18,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 225 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=261, Unknown=1, NotChecked=34, Total=380 [2023-02-17 08:19:18,703 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 125 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 22 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 08:19:18,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1243 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 741 Invalid, 33 Unknown, 228 Unchecked, 0.5s Time] [2023-02-17 08:19:18,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-02-17 08:19:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 210. [2023-02-17 08:19:18,707 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) [2023-02-17 08:19:18,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 225 transitions. [2023-02-17 08:19:18,708 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 225 transitions. Word has length 121 [2023-02-17 08:19:18,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:19:18,708 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 225 transitions. [2023-02-17 08:19:18,708 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) [2023-02-17 08:19:18,708 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 225 transitions. [2023-02-17 08:19:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-02-17 08:19:18,716 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:19:18,716 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] [2023-02-17 08:19:18,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 08:19:18,926 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 [2023-02-17 08:19:18,927 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)] === [2023-02-17 08:19:18,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:19:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1349401771, now seen corresponding path program 1 times [2023-02-17 08:19:18,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:19:18,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698938523] [2023-02-17 08:19:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:19:18,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:19:18,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704436452] [2023-02-17 08:19:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:19:18,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:19:18,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:19:18,972 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) [2023-02-17 08:19:18,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 08:19:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:19:21,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-17 08:19:21,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:19:21,219 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 [2023-02-17 08:19:37,931 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2102 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= 0 (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2102)))) is different from true [2023-02-17 08:19:38,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 08:19:38,072 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 [2023-02-17 08:19:38,076 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:19:38,076 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 15 [2023-02-17 08:19:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 590 proven. 316 refuted. 0 times theorem prover too weak. 494 trivial. 151 not checked. [2023-02-17 08:19:38,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 08:19:38,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:19:38,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698938523] [2023-02-17 08:19:38,704 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:19:38,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704436452] [2023-02-17 08:19:38,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704436452] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 08:19:38,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 08:19:38,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-02-17 08:19:38,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724097130] [2023-02-17 08:19:38,705 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 08:19:38,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-17 08:19:38,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:19:38,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-17 08:19:38,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=733, Unknown=7, NotChecked=54, Total=870 [2023-02-17 08:19:38,707 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) [2023-02-17 08:19:40,739 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] [2023-02-17 08:19:42,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:19:44,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:19:49,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:19:51,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:19:53,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:19:57,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:19:59,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:20:03,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:20:05,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:20:19,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:20:21,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:20:23,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:20:23,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:20:23,464 INFO L93 Difference]: Finished difference Result 253 states and 275 transitions. [2023-02-17 08:20:23,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-17 08:20:23,465 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 [2023-02-17 08:20:23,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:20:23,468 INFO L225 Difference]: With dead ends: 253 [2023-02-17 08:20:23,468 INFO L226 Difference]: Without dead ends: 253 [2023-02-17 08:20:23,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=187, Invalid=1610, Unknown=13, NotChecked=82, Total=1892 [2023-02-17 08:20:23,469 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 335 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 11 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2023-02-17 08:20:23,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 2179 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2182 Invalid, 13 Unknown, 205 Unchecked, 30.9s Time] [2023-02-17 08:20:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-02-17 08:20:23,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 208. [2023-02-17 08:20:23,474 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) [2023-02-17 08:20:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2023-02-17 08:20:23,475 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 121 [2023-02-17 08:20:23,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:20:23,475 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2023-02-17 08:20:23,475 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) [2023-02-17 08:20:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2023-02-17 08:20:23,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-02-17 08:20:23,477 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:20:23,477 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] [2023-02-17 08:20:23,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-17 08:20:23,685 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 [2023-02-17 08:20:23,685 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)] === [2023-02-17 08:20:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:20:23,686 INFO L85 PathProgramCache]: Analyzing trace with hash -305022197, now seen corresponding path program 1 times [2023-02-17 08:20:23,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:20:23,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347524962] [2023-02-17 08:20:23,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:20:23,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:20:23,742 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:20:23,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617529706] [2023-02-17 08:20:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:20:23,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:20:23,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:20:23,748 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) [2023-02-17 08:20:23,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 08:20:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:20:24,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-17 08:20:24,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:20:24,170 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2718 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2718))) is different from true [2023-02-17 08:20:24,203 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:20:24,204 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 28 [2023-02-17 08:20:24,218 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2719 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2719))) is different from true [2023-02-17 08:20:24,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:20:24,283 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 28 [2023-02-17 08:20:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 800 proven. 174 refuted. 0 times theorem prover too weak. 574 trivial. 3 not checked. [2023-02-17 08:20:24,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 08:20:24,449 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:20:24,450 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 16 [2023-02-17 08:20:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 800 proven. 176 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-02-17 08:20:24,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:20:24,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347524962] [2023-02-17 08:20:24,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:20:24,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617529706] [2023-02-17 08:20:24,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617529706] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 08:20:24,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 08:20:24,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 15 [2023-02-17 08:20:24,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802770707] [2023-02-17 08:20:24,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 08:20:24,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 08:20:24,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:20:24,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 08:20:24,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=154, Unknown=2, NotChecked=50, Total=240 [2023-02-17 08:20:24,460 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) [2023-02-17 08:20:24,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:20:24,953 INFO L93 Difference]: Finished difference Result 244 states and 263 transitions. [2023-02-17 08:20:24,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 08:20:24,954 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 [2023-02-17 08:20:24,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:20:24,955 INFO L225 Difference]: With dead ends: 244 [2023-02-17 08:20:24,955 INFO L226 Difference]: Without dead ends: 244 [2023-02-17 08:20:24,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 223 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=372, Unknown=2, NotChecked=82, Total=552 [2023-02-17 08:20:24,956 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, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 472 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 08:20:24,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1250 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 861 Invalid, 0 Unknown, 472 Unchecked, 0.4s Time] [2023-02-17 08:20:24,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-02-17 08:20:24,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 205. [2023-02-17 08:20:24,961 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) [2023-02-17 08:20:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 220 transitions. [2023-02-17 08:20:24,962 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 220 transitions. Word has length 123 [2023-02-17 08:20:24,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:20:24,962 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 220 transitions. [2023-02-17 08:20:24,962 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) [2023-02-17 08:20:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 220 transitions. [2023-02-17 08:20:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-02-17 08:20:24,964 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:20:24,964 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] [2023-02-17 08:20:24,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-17 08:20:25,172 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 [2023-02-17 08:20:25,173 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)] === [2023-02-17 08:20:25,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:20:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash -305022196, now seen corresponding path program 1 times [2023-02-17 08:20:25,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:20:25,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734574647] [2023-02-17 08:20:25,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:20:25,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:20:25,237 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:20:25,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103524637] [2023-02-17 08:20:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:20:25,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:20:25,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:20:25,239 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) [2023-02-17 08:20:25,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 08:20:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:20:30,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 79 conjunts are in the unsatisfiable core [2023-02-17 08:20:30,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:20:30,766 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 [2023-02-17 08:20:38,786 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3339 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_3340 Int)) (and (= 0 (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3339)) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3340)))) is different from true [2023-02-17 08:20:38,899 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:20:38,900 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 39 [2023-02-17 08:20:38,906 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 [2023-02-17 08:20:39,199 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_3341 Int)) (and (= 0 (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3341)))) is different from true [2023-02-17 08:20:39,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 08:20:39,281 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 [2023-02-17 08:20:39,284 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:20:39,285 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 15 [2023-02-17 08:20:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 696 proven. 160 refuted. 0 times theorem prover too weak. 359 trivial. 336 not checked. [2023-02-17 08:20:39,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 08:20:40,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:20:40,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734574647] [2023-02-17 08:20:40,065 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:20:40,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103524637] [2023-02-17 08:20:40,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103524637] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 08:20:40,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 08:20:40,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-02-17 08:20:40,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108601972] [2023-02-17 08:20:40,066 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 08:20:40,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-17 08:20:40,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:20:40,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-17 08:20:40,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=493, Unknown=5, NotChecked=90, Total=650 [2023-02-17 08:20:40,067 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) [2023-02-17 08:20:42,097 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] [2023-02-17 08:20:44,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:20:46,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:20:48,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:20:50,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:20:52,864 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] [2023-02-17 08:21:04,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:21:04,577 INFO L93 Difference]: Finished difference Result 241 states and 260 transitions. [2023-02-17 08:21:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-17 08:21:04,577 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 [2023-02-17 08:21:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:21:04,579 INFO L225 Difference]: With dead ends: 241 [2023-02-17 08:21:04,579 INFO L226 Difference]: Without dead ends: 241 [2023-02-17 08:21:04,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=163, Invalid=1169, Unknown=8, NotChecked=142, Total=1482 [2023-02-17 08:21:04,580 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 422 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 20 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 452 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2023-02-17 08:21:04,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1690 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1727 Invalid, 6 Unknown, 452 Unchecked, 17.5s Time] [2023-02-17 08:21:04,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-02-17 08:21:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 203. [2023-02-17 08:21:04,585 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) [2023-02-17 08:21:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions. [2023-02-17 08:21:04,586 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 123 [2023-02-17 08:21:04,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:21:04,586 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions. [2023-02-17 08:21:04,586 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) [2023-02-17 08:21:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions. [2023-02-17 08:21:04,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-17 08:21:04,587 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:21:04,588 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] [2023-02-17 08:21:04,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-17 08:21:04,801 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 [2023-02-17 08:21:04,801 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)] === [2023-02-17 08:21:04,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:21:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1713867913, now seen corresponding path program 1 times [2023-02-17 08:21:04,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:21:04,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515137145] [2023-02-17 08:21:04,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:21:04,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:21:04,856 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:21:04,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439923201] [2023-02-17 08:21:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:21:04,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:21:04,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:21:04,865 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) [2023-02-17 08:21:04,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 08:21:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:21:05,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-17 08:21:05,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:21:05,375 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:21:05,375 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 39 [2023-02-17 08:21:05,419 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3982 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= 0 (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3982)))) is different from true [2023-02-17 08:21:05,443 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:21:05,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 45 treesize of output 137 [2023-02-17 08:21:06,996 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3983 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3983))) is different from true [2023-02-17 08:21:07,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:21:07,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 110 [2023-02-17 08:21:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 713 proven. 262 refuted. 0 times theorem prover too weak. 310 trivial. 266 not checked. [2023-02-17 08:21:08,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 08:21:08,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:21:08,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515137145] [2023-02-17 08:21:08,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:21:08,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439923201] [2023-02-17 08:21:08,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439923201] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 08:21:08,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 08:21:08,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-02-17 08:21:08,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134284646] [2023-02-17 08:21:08,198 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 08:21:08,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 08:21:08,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:21:08,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 08:21:08,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=262, Unknown=2, NotChecked=66, Total=380 [2023-02-17 08:21:08,199 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand has 17 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 08:21:08,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:21:08,944 INFO L93 Difference]: Finished difference Result 237 states and 256 transitions. [2023-02-17 08:21:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 08:21:08,944 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 130 [2023-02-17 08:21:08,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:21:08,945 INFO L225 Difference]: With dead ends: 237 [2023-02-17 08:21:08,945 INFO L226 Difference]: Without dead ends: 237 [2023-02-17 08:21:08,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 139 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=122, Invalid=534, Unknown=2, NotChecked=98, Total=756 [2023-02-17 08:21:08,946 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 297 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 31 mSolverCounterUnsat, 36 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 36 IncrementalHoareTripleChecker+Unknown, 443 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 08:21:08,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1309 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 905 Invalid, 36 Unknown, 443 Unchecked, 0.6s Time] [2023-02-17 08:21:08,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-02-17 08:21:08,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 200. [2023-02-17 08:21:08,950 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) [2023-02-17 08:21:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 215 transitions. [2023-02-17 08:21:08,951 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 215 transitions. Word has length 130 [2023-02-17 08:21:08,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:21:08,952 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 215 transitions. [2023-02-17 08:21:08,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 08:21:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 215 transitions. [2023-02-17 08:21:08,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-17 08:21:08,953 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:21:08,953 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] [2023-02-17 08:21:08,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 08:21:09,164 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 [2023-02-17 08:21:09,164 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)] === [2023-02-17 08:21:09,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:21:09,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1713867914, now seen corresponding path program 1 times [2023-02-17 08:21:09,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:21:09,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305122393] [2023-02-17 08:21:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:21:09,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:21:09,202 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:21:09,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608165351] [2023-02-17 08:21:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:21:09,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:21:09,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:21:09,204 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) [2023-02-17 08:21:09,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 08:21:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:21:11,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 118 conjunts are in the unsatisfiable core [2023-02-17 08:21:11,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:21:11,540 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 [2023-02-17 08:21:18,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 08:21:18,649 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 [2023-02-17 08:21:18,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:21:18,667 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 39 [2023-02-17 08:21:19,365 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4629 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= 0 (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_4629)))) is different from true [2023-02-17 08:21:19,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 08:21:19,493 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 [2023-02-17 08:21:19,495 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:21:19,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 75 [2023-02-17 08:21:20,349 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_4630 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (and (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| (* |zalloc_or_die_calloc_model_~nmemb#1| |zalloc_or_die_calloc_model_~size#1|)) (>= v_ArrVal_4630 (mod (* |zalloc_or_die_calloc_model_~size#1| |zalloc_or_die_calloc_model_~nmemb#1|) 4294967296)) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_4630)))) is different from true [2023-02-17 08:21:22,119 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_4630 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_~size#1| |zalloc_or_die_calloc_model_~nmemb#1|) 4294967296))) (and (< 7 .cse0) (>= v_ArrVal_4630 .cse0) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_4630))))) is different from true [2023-02-17 08:21:22,264 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:21:22,264 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 32 [2023-02-17 08:21:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 475 proven. 564 refuted. 0 times theorem prover too weak. 138 trivial. 374 not checked. [2023-02-17 08:21:23,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 08:21:24,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:21:24,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305122393] [2023-02-17 08:21:24,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:21:24,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608165351] [2023-02-17 08:21:24,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608165351] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 08:21:24,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 08:21:24,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2023-02-17 08:21:24,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039423592] [2023-02-17 08:21:24,981 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 08:21:24,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-17 08:21:24,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:21:24,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-17 08:21:24,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1594, Unknown=20, NotChecked=246, Total=1980 [2023-02-17 08:21:24,982 INFO L87 Difference]: Start difference. First operand 200 states and 215 transitions. Second operand has 43 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 08:21:27,040 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] [2023-02-17 08:21:29,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:21:33,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:21:37,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:21:41,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:21:45,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:21:49,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:21:53,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:21:58,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:22:02,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:22:06,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:22:49,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 08:22:49,886 INFO L93 Difference]: Finished difference Result 233 states and 252 transitions. [2023-02-17 08:22:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-17 08:22:49,886 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 130 [2023-02-17 08:22:49,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 08:22:49,887 INFO L225 Difference]: With dead ends: 233 [2023-02-17 08:22:49,887 INFO L226 Difference]: Without dead ends: 233 [2023-02-17 08:22:49,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 70.1s TimeCoverageRelationStatistics Valid=273, Invalid=3010, Unknown=35, NotChecked=342, Total=3660 [2023-02-17 08:22:49,889 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 424 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 29 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 3925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 604 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2023-02-17 08:22:49,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 3192 Invalid, 3925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3281 Invalid, 11 Unknown, 604 Unchecked, 27.5s Time] [2023-02-17 08:22:49,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-02-17 08:22:49,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 197. [2023-02-17 08:22:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 131 states have (on average 1.5267175572519085) 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) [2023-02-17 08:22:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2023-02-17 08:22:49,894 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 130 [2023-02-17 08:22:49,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 08:22:49,895 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2023-02-17 08:22:49,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 40 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 08:22:49,895 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2023-02-17 08:22:49,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-02-17 08:22:49,896 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 08:22:49,896 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, 1] [2023-02-17 08:22:49,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-17 08:22:50,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-17 08:22:50,112 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-02-17 08:22:50,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 08:22:50,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1590297785, now seen corresponding path program 1 times [2023-02-17 08:22:50,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 08:22:50,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211034885] [2023-02-17 08:22:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:22:50,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 08:22:50,156 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 08:22:50,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481924603] [2023-02-17 08:22:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 08:22:50,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 08:22:50,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 08:22:50,158 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 08:22:50,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-17 08:22:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 08:22:52,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 87 conjunts are in the unsatisfiable core [2023-02-17 08:22:52,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 08:22:52,797 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 [2023-02-17 08:23:07,329 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5272 Int) (v_ArrVal_5271 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= 0 (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5271)) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5272)))) is different from true [2023-02-17 08:23:07,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 08:23:07,433 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 [2023-02-17 08:23:07,435 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:23:07,435 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 39 [2023-02-17 08:23:07,817 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5273 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= 0 (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5273)))) is different from true [2023-02-17 08:23:07,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 08:23:07,865 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 [2023-02-17 08:23:07,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 08:23:07,867 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 15 [2023-02-17 08:23:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 618 proven. 253 refuted. 0 times theorem prover too weak. 290 trivial. 390 not checked. [2023-02-17 08:23:08,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 08:23:08,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 08:23:08,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211034885] [2023-02-17 08:23:08,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 08:23:08,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481924603] [2023-02-17 08:23:08,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481924603] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 08:23:08,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 08:23:08,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2023-02-17 08:23:08,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873631081] [2023-02-17 08:23:08,511 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 08:23:08,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-17 08:23:08,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 08:23:08,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-17 08:23:08,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=734, Unknown=8, NotChecked=110, Total=930 [2023-02-17 08:23:08,513 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand has 29 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 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) [2023-02-17 08:23:10,545 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] [2023-02-17 08:23:12,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:23:14,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:23:16,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:23:20,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:23:22,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:23:24,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:23:27,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:23:29,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:23:31,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-17 08:23:33,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]