./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0235-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5317dae 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-0235-2.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 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:14:24,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:14:24,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:14:24,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:14:24,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:14:24,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:14:24,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:14:24,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:14:24,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:14:24,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:14:24,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:14:24,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:14:24,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:14:24,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:14:24,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:14:24,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:14:24,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:14:24,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:14:24,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:14:24,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:14:24,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:14:24,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:14:24,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:14:24,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:14:24,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:14:24,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:14:24,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:14:24,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:14:24,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:14:24,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:14:24,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:14:24,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:14:24,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:14:24,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:14:24,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:14:24,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:14:24,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:14:24,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:14:24,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:14:24,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:14:24,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:14:24,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-16 03:14:24,576 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:14:24,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:14:24,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:14:24,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:14:24,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:14:24,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:14:24,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:14:24,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:14:24,579 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:14:24,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:14:24,580 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:14:24,580 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:14:24,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:14:24,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:14:24,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:14:24,581 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:14:24,581 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:14:24,581 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:14:24,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:14:24,581 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:14:24,581 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:14:24,582 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:14:24,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:14:24,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:14:24,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:14:24,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:14:24,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:14:24,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:14:24,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 03:14:24,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 03:14:24,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:14:24,583 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:14:24,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:14:24,584 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:14:24,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 [2023-02-16 03:14:24,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:14:24,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:14:24,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:14:24,780 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:14:24,781 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:14:24,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-2.i [2023-02-16 03:14:25,755 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:14:25,988 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:14:25,988 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-2.i [2023-02-16 03:14:26,003 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bb54629f/e1901e2c65284e07927879683dd8489d/FLAG706228024 [2023-02-16 03:14:26,014 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bb54629f/e1901e2c65284e07927879683dd8489d [2023-02-16 03:14:26,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:14:26,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:14:26,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:14:26,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:14:26,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:14:26,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0162d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26, skipping insertion in model container [2023-02-16 03:14:26,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:14:26,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:14:26,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:14:26,418 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 03:14:26,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:14:26,486 INFO L208 MainTranslator]: Completed translation [2023-02-16 03:14:26,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26 WrapperNode [2023-02-16 03:14:26,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:14:26,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 03:14:26,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 03:14:26,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 03:14:26,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,550 INFO L138 Inliner]: procedures = 188, calls = 71, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 237 [2023-02-16 03:14:26,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 03:14:26,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 03:14:26,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 03:14:26,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 03:14:26,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,595 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 03:14:26,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 03:14:26,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 03:14:26,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 03:14:26,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (1/1) ... [2023-02-16 03:14:26,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:14:26,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:26,632 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) [2023-02-16 03:14:26,640 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 [2023-02-16 03:14:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 03:14:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 03:14:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 03:14:26,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 03:14:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2023-02-16 03:14:26,671 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2023-02-16 03:14:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 03:14:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 03:14:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2023-02-16 03:14:26,671 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2023-02-16 03:14:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 03:14:26,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 03:14:26,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 03:14:26,773 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 03:14:26,774 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 03:14:27,178 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 03:14:27,184 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 03:14:27,184 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2023-02-16 03:14:27,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:14:27 BoogieIcfgContainer [2023-02-16 03:14:27,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 03:14:27,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 03:14:27,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 03:14:27,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 03:14:27,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 03:14:26" (1/3) ... [2023-02-16 03:14:27,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b333ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:14:27, skipping insertion in model container [2023-02-16 03:14:27,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:26" (2/3) ... [2023-02-16 03:14:27,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b333ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:14:27, skipping insertion in model container [2023-02-16 03:14:27,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:14:27" (3/3) ... [2023-02-16 03:14:27,192 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-2.i [2023-02-16 03:14:27,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 03:14:27,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2023-02-16 03:14:27,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 03:14:27,259 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;@6fc8880e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 03:14:27,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2023-02-16 03:14:27,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 136 states have (on average 1.875) internal successors, (255), 223 states have internal predecessors, (255), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 03:14:27,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-16 03:14:27,268 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:27,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-16 03:14:27,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:14:27,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:27,273 INFO L85 PathProgramCache]: Analyzing trace with hash 930118, now seen corresponding path program 1 times [2023-02-16 03:14:27,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:27,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153761107] [2023-02-16 03:14:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:27,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:27,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:27,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153761107] [2023-02-16 03:14:27,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153761107] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:27,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:27,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:14:27,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700568112] [2023-02-16 03:14:27,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:27,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 03:14:27,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:27,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 03:14:27,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 03:14:27,418 INFO L87 Difference]: Start difference. First operand has 238 states, 136 states have (on average 1.875) internal successors, (255), 223 states have internal predecessors, (255), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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) [2023-02-16 03:14:27,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:27,468 INFO L93 Difference]: Finished difference Result 238 states and 268 transitions. [2023-02-16 03:14:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 03:14:27,470 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 [2023-02-16 03:14:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:27,481 INFO L225 Difference]: With dead ends: 238 [2023-02-16 03:14:27,482 INFO L226 Difference]: Without dead ends: 236 [2023-02-16 03:14:27,483 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 [2023-02-16 03:14:27,486 INFO L413 NwaCegarLoop]: 268 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, 268 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 [2023-02-16 03:14:27,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:14:27,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-02-16 03:14:27,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2023-02-16 03:14:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 135 states have (on average 1.7925925925925925) internal successors, (242), 221 states have internal predecessors, (242), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 03:14:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 266 transitions. [2023-02-16 03:14:27,528 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 266 transitions. Word has length 4 [2023-02-16 03:14:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:27,529 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 266 transitions. [2023-02-16 03:14:27,529 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) [2023-02-16 03:14:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 266 transitions. [2023-02-16 03:14:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-16 03:14:27,530 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:27,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-16 03:14:27,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 03:14:27,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:14:27,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash 889937946, now seen corresponding path program 1 times [2023-02-16 03:14:27,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:27,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846669767] [2023-02-16 03:14:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:27,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:27,543 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:27,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013480805] [2023-02-16 03:14:27,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:27,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:27,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:27,551 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) [2023-02-16 03:14:27,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 03:14:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:27,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 03:14:27,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:27,651 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 [2023-02-16 03:14:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:27,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:14:27,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:27,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846669767] [2023-02-16 03:14:27,658 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:27,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013480805] [2023-02-16 03:14:27,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013480805] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:27,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:27,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:14:27,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085268569] [2023-02-16 03:14:27,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:27,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:14:27,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:27,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:14:27,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:14:27,661 INFO L87 Difference]: Start difference. First operand 236 states and 266 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) [2023-02-16 03:14:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:27,755 INFO L93 Difference]: Finished difference Result 235 states and 265 transitions. [2023-02-16 03:14:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:14:27,756 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 [2023-02-16 03:14:27,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:27,757 INFO L225 Difference]: With dead ends: 235 [2023-02-16 03:14:27,757 INFO L226 Difference]: Without dead ends: 235 [2023-02-16 03:14:27,757 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 [2023-02-16 03:14:27,758 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 9 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:27,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 428 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:14:27,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-02-16 03:14:27,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2023-02-16 03:14:27,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 135 states have (on average 1.7851851851851852) internal successors, (241), 220 states have internal predecessors, (241), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 03:14:27,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 265 transitions. [2023-02-16 03:14:27,767 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 265 transitions. Word has length 6 [2023-02-16 03:14:27,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:27,767 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 265 transitions. [2023-02-16 03:14:27,768 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) [2023-02-16 03:14:27,768 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 265 transitions. [2023-02-16 03:14:27,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 03:14:27,768 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:27,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:27,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:27,976 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 [2023-02-16 03:14:27,976 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:14:27,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:27,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1818272976, now seen corresponding path program 1 times [2023-02-16 03:14:27,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:27,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8090286] [2023-02-16 03:14:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:27,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:27,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:27,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809558087] [2023-02-16 03:14:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:27,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:27,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:27,988 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) [2023-02-16 03:14:28,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 03:14:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:28,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-16 03:14:28,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:28,154 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 [2023-02-16 03:14:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:28,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:14:28,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8090286] [2023-02-16 03:14:28,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:28,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809558087] [2023-02-16 03:14:28,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809558087] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:28,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:28,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:14:28,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749156580] [2023-02-16 03:14:28,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:28,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:14:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:14:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:14:28,179 INFO L87 Difference]: Start difference. First operand 235 states and 265 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) [2023-02-16 03:14:28,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:28,299 INFO L93 Difference]: Finished difference Result 244 states and 274 transitions. [2023-02-16 03:14:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:14:28,300 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 [2023-02-16 03:14:28,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:28,301 INFO L225 Difference]: With dead ends: 244 [2023-02-16 03:14:28,301 INFO L226 Difference]: Without dead ends: 244 [2023-02-16 03:14:28,301 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 [2023-02-16 03:14:28,302 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 16 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:28,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 693 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:14:28,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-02-16 03:14:28,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2023-02-16 03:14:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 143 states have (on average 1.7482517482517483) internal successors, (250), 228 states have internal predecessors, (250), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 03:14:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 274 transitions. [2023-02-16 03:14:28,311 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 274 transitions. Word has length 7 [2023-02-16 03:14:28,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:28,312 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 274 transitions. [2023-02-16 03:14:28,312 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) [2023-02-16 03:14:28,312 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 274 transitions. [2023-02-16 03:14:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-16 03:14:28,314 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:28,314 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] [2023-02-16 03:14:28,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:28,522 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 [2023-02-16 03:14:28,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:14:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1632464615, now seen corresponding path program 1 times [2023-02-16 03:14:28,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:28,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377130149] [2023-02-16 03:14:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:28,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:28,547 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:28,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637316015] [2023-02-16 03:14:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:28,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:28,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:28,550 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) [2023-02-16 03:14:28,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 03:14:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:28,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 03:14:28,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:28,751 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 [2023-02-16 03:14:28,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-02-16 03:14:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-16 03:14:31,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:14:31,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:31,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377130149] [2023-02-16 03:14:31,071 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:31,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637316015] [2023-02-16 03:14:31,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637316015] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:31,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:31,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:14:31,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231032259] [2023-02-16 03:14:31,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:31,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:14:31,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:31,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:14:31,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2023-02-16 03:14:31,074 INFO L87 Difference]: Start difference. First operand 244 states and 274 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) [2023-02-16 03:14:33,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:35,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:39,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:41,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:43,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:43,184 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2023-02-16 03:14:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:14:43,185 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 [2023-02-16 03:14:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:43,186 INFO L225 Difference]: With dead ends: 256 [2023-02-16 03:14:43,186 INFO L226 Difference]: Without dead ends: 246 [2023-02-16 03:14:43,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2023-02-16 03:14:43,187 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 19 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:43,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 921 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 125 Invalid, 4 Unknown, 0 Unchecked, 10.0s Time] [2023-02-16 03:14:43,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-02-16 03:14:43,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2023-02-16 03:14:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 145 states have (on average 1.7379310344827585) internal successors, (252), 230 states have internal predecessors, (252), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 03:14:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2023-02-16 03:14:43,199 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 66 [2023-02-16 03:14:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:43,199 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2023-02-16 03:14:43,204 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) [2023-02-16 03:14:43,204 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2023-02-16 03:14:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-16 03:14:43,205 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:43,205 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] [2023-02-16 03:14:43,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-16 03:14:43,406 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 [2023-02-16 03:14:43,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:14:43,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:43,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1536774091, now seen corresponding path program 1 times [2023-02-16 03:14:43,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:43,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454552121] [2023-02-16 03:14:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:43,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:43,464 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:43,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136753488] [2023-02-16 03:14:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:43,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:43,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:43,473 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) [2023-02-16 03:14:43,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 03:14:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:43,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-16 03:14:43,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:43,743 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 [2023-02-16 03:14:43,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 03:14:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 58 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-02-16 03:14:43,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:14:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-16 03:14:44,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:44,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454552121] [2023-02-16 03:14:44,202 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:44,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136753488] [2023-02-16 03:14:44,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136753488] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:14:44,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:14:44,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-02-16 03:14:44,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278064094] [2023-02-16 03:14:44,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:14:44,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 03:14:44,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:44,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 03:14:44,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:14:44,204 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-16 03:14:44,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:44,424 INFO L93 Difference]: Finished difference Result 272 states and 304 transitions. [2023-02-16 03:14:44,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 03:14:44,424 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 71 [2023-02-16 03:14:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:44,425 INFO L225 Difference]: With dead ends: 272 [2023-02-16 03:14:44,425 INFO L226 Difference]: Without dead ends: 252 [2023-02-16 03:14:44,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-02-16 03:14:44,426 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 38 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:44,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1180 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:14:44,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-02-16 03:14:44,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-02-16 03:14:44,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 151 states have (on average 1.7086092715231789) internal successors, (258), 236 states have internal predecessors, (258), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 03:14:44,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 282 transitions. [2023-02-16 03:14:44,432 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 282 transitions. Word has length 71 [2023-02-16 03:14:44,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:44,432 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 282 transitions. [2023-02-16 03:14:44,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-16 03:14:44,432 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 282 transitions. [2023-02-16 03:14:44,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-16 03:14:44,434 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:44,434 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] [2023-02-16 03:14:44,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:44,653 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 [2023-02-16 03:14:44,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:14:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1330470809, now seen corresponding path program 2 times [2023-02-16 03:14:44,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:44,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799338295] [2023-02-16 03:14:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:44,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:44,678 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:44,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929747090] [2023-02-16 03:14:44,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:14:44,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:44,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:44,680 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) [2023-02-16 03:14:44,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 03:14:45,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:14:45,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:14:45,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-16 03:14:45,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:45,470 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 [2023-02-16 03:14:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-02-16 03:14:45,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:14:45,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:45,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799338295] [2023-02-16 03:14:45,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:45,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929747090] [2023-02-16 03:14:45,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929747090] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:45,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:45,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:14:45,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955560668] [2023-02-16 03:14:45,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:45,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:14:45,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:45,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:14:45,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:14:45,488 INFO L87 Difference]: Start difference. First operand 252 states and 282 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) [2023-02-16 03:14:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:45,583 INFO L93 Difference]: Finished difference Result 251 states and 281 transitions. [2023-02-16 03:14:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:14:45,584 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 86 [2023-02-16 03:14:45,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:45,585 INFO L225 Difference]: With dead ends: 251 [2023-02-16 03:14:45,585 INFO L226 Difference]: Without dead ends: 251 [2023-02-16 03:14:45,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:14:45,586 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 16 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:45,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 677 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:14:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-02-16 03:14:45,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2023-02-16 03:14:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 151 states have (on average 1.7019867549668874) internal successors, (257), 235 states have internal predecessors, (257), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 03:14:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 281 transitions. [2023-02-16 03:14:45,594 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 281 transitions. Word has length 86 [2023-02-16 03:14:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:45,594 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 281 transitions. [2023-02-16 03:14:45,595 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) [2023-02-16 03:14:45,595 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 281 transitions. [2023-02-16 03:14:45,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-02-16 03:14:45,596 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:45,596 INFO L195 NwaCegarLoop]: trace histogram [24, 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] [2023-02-16 03:14:45,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:45,808 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 [2023-02-16 03:14:45,809 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:14:45,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:45,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1602716118, now seen corresponding path program 1 times [2023-02-16 03:14:45,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:45,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867415874] [2023-02-16 03:14:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:45,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:45,839 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:45,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584882333] [2023-02-16 03:14:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:45,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:45,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:45,841 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) [2023-02-16 03:14:45,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 03:14:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:46,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-16 03:14:46,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:46,120 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_700 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_700))) is different from true [2023-02-16 03:14:46,184 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:14:46,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:14:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 261 proven. 31 refuted. 0 times theorem prover too weak. 262 trivial. 1 not checked. [2023-02-16 03:14:46,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:14:46,370 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:14:46,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2023-02-16 03:14:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 261 proven. 32 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-02-16 03:14:46,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:46,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867415874] [2023-02-16 03:14:46,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:46,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584882333] [2023-02-16 03:14:46,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584882333] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:14:46,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:14:46,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 13 [2023-02-16 03:14:46,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742369526] [2023-02-16 03:14:46,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:14:46,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 03:14:46,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:46,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 03:14:46,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2023-02-16 03:14:46,386 INFO L87 Difference]: Start difference. First operand 251 states and 281 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) [2023-02-16 03:14:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:47,036 INFO L93 Difference]: Finished difference Result 404 states and 468 transitions. [2023-02-16 03:14:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 03:14:47,037 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 97 [2023-02-16 03:14:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:47,040 INFO L225 Difference]: With dead ends: 404 [2023-02-16 03:14:47,040 INFO L226 Difference]: Without dead ends: 404 [2023-02-16 03:14:47,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=261, Unknown=1, NotChecked=34, Total=380 [2023-02-16 03:14:47,040 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 474 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:47,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1760 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1174 Invalid, 0 Unknown, 440 Unchecked, 0.5s Time] [2023-02-16 03:14:47,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-02-16 03:14:47,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 249. [2023-02-16 03:14:47,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 151 states have (on average 1.6887417218543046) internal successors, (255), 233 states have internal predecessors, (255), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 03:14:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 279 transitions. [2023-02-16 03:14:47,047 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 279 transitions. Word has length 97 [2023-02-16 03:14:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:47,047 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 279 transitions. [2023-02-16 03:14:47,047 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) [2023-02-16 03:14:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 279 transitions. [2023-02-16 03:14:47,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-02-16 03:14:47,048 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:47,049 INFO L195 NwaCegarLoop]: trace histogram [24, 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] [2023-02-16 03:14:47,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:47,255 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 [2023-02-16 03:14:47,255 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:14:47,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:47,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1602716117, now seen corresponding path program 1 times [2023-02-16 03:14:47,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:47,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207742107] [2023-02-16 03:14:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:47,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:47,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:47,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270097533] [2023-02-16 03:14:47,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:47,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:47,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:47,290 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) [2023-02-16 03:14:47,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 03:14:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:48,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-16 03:14:48,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:48,125 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 [2023-02-16 03:14:48,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 03:14:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 280 proven. 36 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-02-16 03:14:48,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:14:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 32 proven. 138 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2023-02-16 03:14:48,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:48,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207742107] [2023-02-16 03:14:48,671 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:48,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270097533] [2023-02-16 03:14:48,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270097533] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:14:48,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:14:48,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2023-02-16 03:14:48,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747959984] [2023-02-16 03:14:48,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:14:48,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-16 03:14:48,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:48,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-16 03:14:48,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-02-16 03:14:48,672 INFO L87 Difference]: Start difference. First operand 249 states and 279 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-02-16 03:14:49,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:49,104 INFO L93 Difference]: Finished difference Result 277 states and 311 transitions. [2023-02-16 03:14:49,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 03:14:49,104 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2023-02-16 03:14:49,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:49,105 INFO L225 Difference]: With dead ends: 277 [2023-02-16 03:14:49,105 INFO L226 Difference]: Without dead ends: 257 [2023-02-16 03:14:49,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2023-02-16 03:14:49,106 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 42 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:49,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2658 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:14:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-02-16 03:14:49,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2023-02-16 03:14:49,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 159 states have (on average 1.6540880503144655) internal successors, (263), 241 states have internal predecessors, (263), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 03:14:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 287 transitions. [2023-02-16 03:14:49,111 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 287 transitions. Word has length 97 [2023-02-16 03:14:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:49,111 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 287 transitions. [2023-02-16 03:14:49,111 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, (10), 2 states have call predecessors, (10), 4 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-02-16 03:14:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 287 transitions. [2023-02-16 03:14:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-02-16 03:14:49,112 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:49,112 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] [2023-02-16 03:14:49,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-16 03:14:49,326 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 [2023-02-16 03:14:49,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:14:49,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1881445205, now seen corresponding path program 2 times [2023-02-16 03:14:49,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:49,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887473610] [2023-02-16 03:14:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:49,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:49,370 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:49,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954996980] [2023-02-16 03:14:49,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:14:49,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:49,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:49,372 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) [2023-02-16 03:14:49,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 03:14:50,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:14:50,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:14:50,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-16 03:14:50,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:50,833 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 [2023-02-16 03:15:00,069 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1620 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_1620)))) is different from true [2023-02-16 03:15:00,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:15:00,210 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 [2023-02-16 03:15:00,263 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:15:00,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-16 03:15:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 590 proven. 316 refuted. 0 times theorem prover too weak. 494 trivial. 151 not checked. [2023-02-16 03:15:00,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:15:01,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:15:01,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887473610] [2023-02-16 03:15:01,018 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:15:01,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954996980] [2023-02-16 03:15:01,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954996980] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:15:01,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:15:01,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-02-16 03:15:01,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907389684] [2023-02-16 03:15:01,018 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 03:15:01,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-16 03:15:01,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:15:01,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-16 03:15:01,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=4, NotChecked=54, Total=870 [2023-02-16 03:15:01,019 INFO L87 Difference]: Start difference. First operand 257 states and 287 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) [2023-02-16 03:15:03,045 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] [2023-02-16 03:15:05,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:09,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:13,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:15,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:19,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:23,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:25,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:29,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:31,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:53,377 WARN L233 SmtUtils]: Spent 8.69s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:16:05,369 WARN L233 SmtUtils]: Spent 10.96s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:16:10,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:13,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:15,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:15,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:16:15,619 INFO L93 Difference]: Finished difference Result 408 states and 474 transitions. [2023-02-16 03:16:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-16 03:16:15,619 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 [2023-02-16 03:16:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:16:15,621 INFO L225 Difference]: With dead ends: 408 [2023-02-16 03:16:15,621 INFO L226 Difference]: Without dead ends: 408 [2023-02-16 03:16:15,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=187, Invalid=1612, Unknown=11, NotChecked=82, Total=1892 [2023-02-16 03:16:15,622 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 278 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 4606 mSolverCounterSat, 34 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 5042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4606 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 389 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:16:15,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1258 Invalid, 5042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4606 Invalid, 13 Unknown, 389 Unchecked, 30.9s Time] [2023-02-16 03:16:15,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-02-16 03:16:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 255. [2023-02-16 03:16:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 159 states have (on average 1.6415094339622642) internal successors, (261), 239 states have internal predecessors, (261), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 03:16:15,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 285 transitions. [2023-02-16 03:16:15,649 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 285 transitions. Word has length 121 [2023-02-16 03:16:15,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:16:15,650 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 285 transitions. [2023-02-16 03:16:15,650 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) [2023-02-16 03:16:15,650 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 285 transitions. [2023-02-16 03:16:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-02-16 03:16:15,651 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:16:15,651 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] [2023-02-16 03:16:15,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-16 03:16:15,856 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 [2023-02-16 03:16:15,857 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:16:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:16:15,857 INFO L85 PathProgramCache]: Analyzing trace with hash 112388875, now seen corresponding path program 1 times [2023-02-16 03:16:15,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:16:15,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061827610] [2023-02-16 03:16:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:16:15,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:16:15,916 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:16:15,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491020493] [2023-02-16 03:16:15,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:16:15,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:16:15,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:16:15,921 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) [2023-02-16 03:16:15,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 03:16:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:16:16,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-16 03:16:16,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:16:16,311 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2236 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2236))) is different from true [2023-02-16 03:16:16,402 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:16:16,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:16:16,421 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2237 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2237))) is different from true [2023-02-16 03:16:16,509 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:16:16,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:16:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 800 proven. 174 refuted. 0 times theorem prover too weak. 574 trivial. 3 not checked. [2023-02-16 03:16:16,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:16:16,845 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-16 03:16:16,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2023-02-16 03:16:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 800 proven. 176 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-02-16 03:16:16,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:16:16,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061827610] [2023-02-16 03:16:16,857 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:16:16,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491020493] [2023-02-16 03:16:16,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491020493] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:16:16,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:16:16,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 15 [2023-02-16 03:16:16,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59870171] [2023-02-16 03:16:16,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:16:16,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 03:16:16,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:16:16,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 03:16:16,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=154, Unknown=2, NotChecked=50, Total=240 [2023-02-16 03:16:16,858 INFO L87 Difference]: Start difference. First operand 255 states and 285 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) [2023-02-16 03:16:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:16:17,577 INFO L93 Difference]: Finished difference Result 407 states and 471 transitions. [2023-02-16 03:16:17,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 03:16:17,577 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 [2023-02-16 03:16:17,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:16:17,579 INFO L225 Difference]: With dead ends: 407 [2023-02-16 03:16:17,579 INFO L226 Difference]: Without dead ends: 407 [2023-02-16 03:16:17,579 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 [2023-02-16 03:16:17,579 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 571 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 608 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:16:17,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1810 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1272 Invalid, 0 Unknown, 608 Unchecked, 0.6s Time] [2023-02-16 03:16:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-02-16 03:16:17,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 252. [2023-02-16 03:16:17,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 159 states have (on average 1.6226415094339623) internal successors, (258), 236 states have internal predecessors, (258), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 03:16:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 282 transitions. [2023-02-16 03:16:17,586 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 282 transitions. Word has length 123 [2023-02-16 03:16:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:16:17,586 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 282 transitions. [2023-02-16 03:16:17,586 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) [2023-02-16 03:16:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 282 transitions. [2023-02-16 03:16:17,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-02-16 03:16:17,587 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:16:17,587 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] [2023-02-16 03:16:17,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 03:16:17,811 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 [2023-02-16 03:16:17,812 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:16:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:16:17,812 INFO L85 PathProgramCache]: Analyzing trace with hash 112388876, now seen corresponding path program 1 times [2023-02-16 03:16:17,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:16:17,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308363120] [2023-02-16 03:16:17,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:16:17,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:16:17,852 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:16:17,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883148448] [2023-02-16 03:16:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:16:17,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:16:17,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:16:17,854 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) [2023-02-16 03:16:17,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 03:16:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:16:18,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 94 conjunts are in the unsatisfiable core [2023-02-16 03:16:18,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:16:18,247 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 [2023-02-16 03:16:28,057 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_2857 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_2857)))) is different from true [2023-02-16 03:16:28,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:16:28,105 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 [2023-02-16 03:16:28,199 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:16:28,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-16 03:16:28,909 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_2858 Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (let ((.cse0 (* |zalloc_or_die_calloc_model_~size#1| |zalloc_or_die_calloc_model_~nmemb#1|))) (and (<= (mod .cse0 4294967296) v_ArrVal_2858) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2858)) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| .cse0)))) is different from true [2023-02-16 03:16:30,100 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_2858 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 (<= .cse0 v_ArrVal_2858) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2858)) (< 5 .cse0)))) is different from true [2023-02-16 03:16:30,803 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:16:30,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2023-02-16 03:16:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 675 proven. 288 refuted. 0 times theorem prover too weak. 300 trivial. 288 not checked. [2023-02-16 03:16:31,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:16:36,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:16:36,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308363120] [2023-02-16 03:16:36,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:16:36,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883148448] [2023-02-16 03:16:36,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883148448] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:16:36,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:16:36,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2023-02-16 03:16:36,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386106091] [2023-02-16 03:16:36,333 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 03:16:36,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-16 03:16:36,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:16:36,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-16 03:16:36,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=959, Unknown=17, NotChecked=192, Total=1260 [2023-02-16 03:16:36,334 INFO L87 Difference]: Start difference. First operand 252 states and 282 transitions. Second operand has 34 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 03:16:38,364 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] [2023-02-16 03:16:40,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:44,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:48,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:52,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:57,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:17:01,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:17:03,506 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] [2023-02-16 03:17:38,889 WARN L233 SmtUtils]: Spent 8.58s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:17:51,357 WARN L233 SmtUtils]: Spent 8.26s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:18:08,692 WARN L233 SmtUtils]: Spent 13.08s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:18:24,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:18:24,466 INFO L93 Difference]: Finished difference Result 505 states and 589 transitions. [2023-02-16 03:18:24,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-16 03:18:24,466 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 123 [2023-02-16 03:18:24,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:18:24,468 INFO L225 Difference]: With dead ends: 505 [2023-02-16 03:18:24,468 INFO L226 Difference]: Without dead ends: 505 [2023-02-16 03:18:24,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 99.8s TimeCoverageRelationStatistics Valid=205, Invalid=2027, Unknown=36, NotChecked=282, Total=2550 [2023-02-16 03:18:24,469 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 468 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 4794 mSolverCounterSat, 48 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 6367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4794 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 1517 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:18:24,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1390 Invalid, 6367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 4794 Invalid, 8 Unknown, 1517 Unchecked, 23.1s Time] [2023-02-16 03:18:24,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-02-16 03:18:24,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 262. [2023-02-16 03:18:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 167 states have (on average 1.592814371257485) internal successors, (266), 244 states have internal predecessors, (266), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-16 03:18:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 294 transitions. [2023-02-16 03:18:24,479 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 294 transitions. Word has length 123 [2023-02-16 03:18:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:18:24,480 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 294 transitions. [2023-02-16 03:18:24,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.15625) internal successors, (69), 31 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 03:18:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 294 transitions. [2023-02-16 03:18:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-16 03:18:24,481 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:18:24,481 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] [2023-02-16 03:18:24,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 03:18:24,688 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 [2023-02-16 03:18:24,689 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:18:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:18:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash -158311287, now seen corresponding path program 1 times [2023-02-16 03:18:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:18:24,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088895595] [2023-02-16 03:18:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:18:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:18:24,726 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:18:24,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145828847] [2023-02-16 03:18:24,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:18:24,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:18:24,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:18:24,731 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) [2023-02-16 03:18:24,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 03:18:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:18:25,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-16 03:18:25,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:18:25,329 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:18:25,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 03:18:25,394 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3499 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_3499)))) is different from true [2023-02-16 03:18:25,459 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-02-16 03:18:25,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-02-16 03:18:25,492 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3500 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3500))) is different from true [2023-02-16 03:18:25,596 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2023-02-16 03:18:25,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 22 [2023-02-16 03:18:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 713 proven. 262 refuted. 0 times theorem prover too weak. 310 trivial. 266 not checked. [2023-02-16 03:18:25,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:18:25,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:18:25,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088895595] [2023-02-16 03:18:25,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:18:25,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145828847] [2023-02-16 03:18:25,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145828847] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:18:25,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:18:25,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-02-16 03:18:25,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363727901] [2023-02-16 03:18:25,909 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 03:18:25,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-16 03:18:25,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:18:25,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-16 03:18:25,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=262, Unknown=2, NotChecked=66, Total=380 [2023-02-16 03:18:25,911 INFO L87 Difference]: Start difference. First operand 262 states and 294 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) [2023-02-16 03:18:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:18:27,040 INFO L93 Difference]: Finished difference Result 412 states and 478 transitions. [2023-02-16 03:18:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 03:18:27,041 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 [2023-02-16 03:18:27,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:18:27,055 INFO L225 Difference]: With dead ends: 412 [2023-02-16 03:18:27,055 INFO L226 Difference]: Without dead ends: 412 [2023-02-16 03:18:27,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 139 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=534, Unknown=2, NotChecked=98, Total=756 [2023-02-16 03:18:27,056 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 445 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 55 mSolverCounterUnsat, 39 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 39 IncrementalHoareTripleChecker+Unknown, 618 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:18:27,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 2133 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1469 Invalid, 39 Unknown, 618 Unchecked, 0.9s Time] [2023-02-16 03:18:27,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-02-16 03:18:27,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 259. [2023-02-16 03:18:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 167 states have (on average 1.5748502994011977) internal successors, (263), 241 states have internal predecessors, (263), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-16 03:18:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 291 transitions. [2023-02-16 03:18:27,073 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 291 transitions. Word has length 130 [2023-02-16 03:18:27,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:18:27,073 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 291 transitions. [2023-02-16 03:18:27,074 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) [2023-02-16 03:18:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 291 transitions. [2023-02-16 03:18:27,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-16 03:18:27,075 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:18:27,075 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] [2023-02-16 03:18:27,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 03:18:27,282 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 [2023-02-16 03:18:27,283 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-02-16 03:18:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:18:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash -158311286, now seen corresponding path program 1 times [2023-02-16 03:18:27,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:18:27,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981311750] [2023-02-16 03:18:27,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:18:27,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:18:27,331 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:18:27,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499948782] [2023-02-16 03:18:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:18:27,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:18:27,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:18:27,345 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) [2023-02-16 03:18:27,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 03:18:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:18:28,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 118 conjunts are in the unsatisfiable core [2023-02-16 03:18:28,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:18:28,973 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 [2023-02-16 03:18:41,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:18:41,303 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 [2023-02-16 03:18:41,381 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:18:41,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-16 03:18:42,415 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4146 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_4146)))) is different from true [2023-02-16 03:18:42,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:18:42,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2023-02-16 03:18:42,687 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-02-16 03:18:42,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-02-16 03:18:43,401 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_4147 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (let ((.cse0 (* |zalloc_or_die_calloc_model_~size#1| |zalloc_or_die_calloc_model_~nmemb#1|))) (and (<= (mod .cse0 4294967296) v_ArrVal_4147) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| .cse0) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_4147))))) is different from true [2023-02-16 03:18:45,411 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_4147 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) (<= .cse0 v_ArrVal_4147) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_4147))))) is different from true [2023-02-16 03:18:46,094 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:18:46,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2023-02-16 03:18:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 475 proven. 564 refuted. 0 times theorem prover too weak. 138 trivial. 374 not checked. [2023-02-16 03:18:47,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:18:51,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:18:51,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981311750] [2023-02-16 03:18:51,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:18:51,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499948782] [2023-02-16 03:18:51,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499948782] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:18:51,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:18:51,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2023-02-16 03:18:51,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875251383] [2023-02-16 03:18:51,533 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 03:18:51,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-16 03:18:51,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:18:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-16 03:18:51,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1593, Unknown=21, NotChecked=246, Total=1980 [2023-02-16 03:18:51,535 INFO L87 Difference]: Start difference. First operand 259 states and 291 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) [2023-02-16 03:18:53,630 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] [2023-02-16 03:18:57,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:18:59,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:19:03,908 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]