./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ssina.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ssina.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 11:00:40,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 11:00:40,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 11:00:40,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 11:00:40,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 11:00:40,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 11:00:40,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 11:00:40,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 11:00:40,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 11:00:40,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 11:00:40,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 11:00:40,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 11:00:40,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 11:00:40,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 11:00:40,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 11:00:40,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 11:00:40,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 11:00:40,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 11:00:40,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 11:00:40,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 11:00:40,972 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 11:00:40,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 11:00:40,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 11:00:40,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 11:00:40,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 11:00:40,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 11:00:40,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 11:00:40,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 11:00:40,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 11:00:40,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 11:00:40,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 11:00:40,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 11:00:40,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 11:00:40,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 11:00:40,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 11:00:40,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 11:00:40,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 11:00:40,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 11:00:40,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 11:00:40,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 11:00:40,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 11:00:40,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 11:00:40,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 11:00:41,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 11:00:41,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 11:00:41,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 11:00:41,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 11:00:41,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 11:00:41,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 11:00:41,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 11:00:41,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 11:00:41,017 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 11:00:41,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 11:00:41,018 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 11:00:41,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 11:00:41,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 11:00:41,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 11:00:41,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 11:00:41,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 11:00:41,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 11:00:41,019 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 11:00:41,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 11:00:41,019 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 11:00:41,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 11:00:41,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 11:00:41,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 11:00:41,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 11:00:41,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:00:41,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 11:00:41,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 11:00:41,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 11:00:41,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 11:00:41,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 11:00:41,021 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 11:00:41,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 11:00:41,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 11:00:41,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 [2022-07-22 11:00:41,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 11:00:41,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 11:00:41,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 11:00:41,231 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 11:00:41,232 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 11:00:41,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ssina.c [2022-07-22 11:00:41,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79a82a8e9/2971c45984cc4497885988a627be9ce2/FLAG4496f8d3e [2022-07-22 11:00:41,631 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 11:00:41,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c [2022-07-22 11:00:41,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79a82a8e9/2971c45984cc4497885988a627be9ce2/FLAG4496f8d3e [2022-07-22 11:00:41,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79a82a8e9/2971c45984cc4497885988a627be9ce2 [2022-07-22 11:00:41,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 11:00:41,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 11:00:41,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 11:00:41,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 11:00:41,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 11:00:41,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df18e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41, skipping insertion in model container [2022-07-22 11:00:41,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 11:00:41,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 11:00:41,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c[588,601] [2022-07-22 11:00:41,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:00:41,817 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 11:00:41,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c[588,601] [2022-07-22 11:00:41,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:00:41,847 INFO L208 MainTranslator]: Completed translation [2022-07-22 11:00:41,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41 WrapperNode [2022-07-22 11:00:41,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 11:00:41,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 11:00:41,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 11:00:41,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 11:00:41,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,884 INFO L137 Inliner]: procedures = 17, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 111 [2022-07-22 11:00:41,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 11:00:41,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 11:00:41,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 11:00:41,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 11:00:41,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 11:00:41,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 11:00:41,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 11:00:41,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 11:00:41,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41" (1/1) ... [2022-07-22 11:00:41,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:00:41,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:00:41,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 11:00:41,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 11:00:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 11:00:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 11:00:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 11:00:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 11:00:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 11:00:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 11:00:41,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 11:00:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 11:00:41,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 11:00:42,013 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 11:00:42,015 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 11:00:42,159 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 11:00:42,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 11:00:42,163 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-22 11:00:42,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:00:42 BoogieIcfgContainer [2022-07-22 11:00:42,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 11:00:42,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 11:00:42,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 11:00:42,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 11:00:42,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:00:41" (1/3) ... [2022-07-22 11:00:42,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7baf42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:00:42, skipping insertion in model container [2022-07-22 11:00:42,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:00:41" (2/3) ... [2022-07-22 11:00:42,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b7baf42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:00:42, skipping insertion in model container [2022-07-22 11:00:42,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:00:42" (3/3) ... [2022-07-22 11:00:42,171 INFO L111 eAbstractionObserver]: Analyzing ICFG ssina.c [2022-07-22 11:00:42,181 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 11:00:42,181 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 11:00:42,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 11:00:42,238 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c8b7331, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@29ebafdc [2022-07-22 11:00:42,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 11:00:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 11:00:42,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:00:42,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:00:42,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:00:42,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:00:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2022-07-22 11:00:42,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:00:42,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012955875] [2022-07-22 11:00:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:00:42,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:00:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:00:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:00:42,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:00:42,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012955875] [2022-07-22 11:00:42,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012955875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:00:42,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:00:42,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 11:00:42,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831619711] [2022-07-22 11:00:42,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:00:42,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 11:00:42,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:00:42,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 11:00:42,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 11:00:42,386 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:42,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:00:42,403 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-07-22 11:00:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 11:00:42,405 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2022-07-22 11:00:42,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:00:42,410 INFO L225 Difference]: With dead ends: 56 [2022-07-22 11:00:42,411 INFO L226 Difference]: Without dead ends: 26 [2022-07-22 11:00:42,413 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 [2022-07-22 11:00:42,418 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2022-07-22 11:00:42,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:00:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-22 11:00:42,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-22 11:00:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-07-22 11:00:42,446 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-07-22 11:00:42,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:00:42,446 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-07-22 11:00:42,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:42,447 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-07-22 11:00:42,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 11:00:42,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:00:42,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:00:42,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 11:00:42,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:00:42,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:00:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2022-07-22 11:00:42,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:00:42,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286608954] [2022-07-22 11:00:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:00:42,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:00:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:00:42,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:00:42,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:00:42,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286608954] [2022-07-22 11:00:42,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286608954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:00:42,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:00:42,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 11:00:42,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152978735] [2022-07-22 11:00:42,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:00:42,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 11:00:42,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:00:42,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 11:00:42,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:00:42,532 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:00:42,618 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-07-22 11:00:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 11:00:42,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2022-07-22 11:00:42,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:00:42,619 INFO L225 Difference]: With dead ends: 61 [2022-07-22 11:00:42,619 INFO L226 Difference]: Without dead ends: 42 [2022-07-22 11:00:42,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 11:00:42,621 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:00:42,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 18 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:00:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-22 11:00:42,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-07-22 11:00:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-07-22 11:00:42,634 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2022-07-22 11:00:42,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:00:42,635 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-07-22 11:00:42,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-07-22 11:00:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 11:00:42,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:00:42,636 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 11:00:42,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 11:00:42,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:00:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:00:42,637 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2022-07-22 11:00:42,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:00:42,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465624243] [2022-07-22 11:00:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:00:42,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:00:42,675 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 11:00:42,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354538565] [2022-07-22 11:00:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:00:42,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:00:42,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:00:42,680 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) [2022-07-22 11:00:42,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 11:00:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:00:42,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-22 11:00:42,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:00:42,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-07-22 11:00:42,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 11:00:42,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 22 [2022-07-22 11:00:43,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 36 treesize of output 23 [2022-07-22 11:00:43,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 36 treesize of output 23 [2022-07-22 11:00:43,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 34 treesize of output 25 [2022-07-22 11:00:43,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 38 treesize of output 25 [2022-07-22 11:00:43,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 38 treesize of output 25 [2022-07-22 11:00:43,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 41 [2022-07-22 11:00:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:00:43,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:00:44,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:00:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:00:44,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:00:44,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465624243] [2022-07-22 11:00:44,449 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 11:00:44,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354538565] [2022-07-22 11:00:44,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354538565] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:00:44,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:00:44,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-07-22 11:00:44,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139038418] [2022-07-22 11:00:44,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 11:00:44,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-22 11:00:44,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:00:44,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-22 11:00:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2022-07-22 11:00:44,451 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:00:46,297 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-07-22 11:00:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 11:00:46,298 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 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 28 [2022-07-22 11:00:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:00:46,299 INFO L225 Difference]: With dead ends: 58 [2022-07-22 11:00:46,299 INFO L226 Difference]: Without dead ends: 56 [2022-07-22 11:00:46,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 11:00:46,301 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 11:00:46,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 169 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 342 Invalid, 0 Unknown, 61 Unchecked, 1.0s Time] [2022-07-22 11:00:46,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-22 11:00:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2022-07-22 11:00:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-07-22 11:00:46,307 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 28 [2022-07-22 11:00:46,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:00:46,307 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-07-22 11:00:46,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-07-22 11:00:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 11:00:46,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:00:46,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2022-07-22 11:00:46,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 11:00:46,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:00:46,509 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:00:46,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:00:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1642466588, now seen corresponding path program 2 times [2022-07-22 11:00:46,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:00:46,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200824557] [2022-07-22 11:00:46,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:00:46,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:00:46,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 11:00:46,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456068052] [2022-07-22 11:00:46,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 11:00:46,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:00:46,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:00:46,584 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) [2022-07-22 11:00:46,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 11:00:46,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 11:00:46,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 11:00:46,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 11:00:46,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:00:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 11:00:46,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:00:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 11:00:46,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:00:46,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200824557] [2022-07-22 11:00:46,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 11:00:46,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456068052] [2022-07-22 11:00:46,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456068052] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:00:46,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:00:46,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-22 11:00:46,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935194658] [2022-07-22 11:00:46,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 11:00:46,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 11:00:46,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:00:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 11:00:46,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:00:46,698 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:46,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:00:46,823 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2022-07-22 11:00:46,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 11:00:46,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 30 [2022-07-22 11:00:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:00:46,824 INFO L225 Difference]: With dead ends: 121 [2022-07-22 11:00:46,825 INFO L226 Difference]: Without dead ends: 78 [2022-07-22 11:00:46,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-22 11:00:46,826 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 85 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:00:46,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 47 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:00:46,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-22 11:00:46,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2022-07-22 11:00:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:46,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2022-07-22 11:00:46,832 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 30 [2022-07-22 11:00:46,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:00:46,832 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2022-07-22 11:00:46,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:46,832 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2022-07-22 11:00:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 11:00:46,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:00:46,833 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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] [2022-07-22 11:00:46,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 11:00:47,066 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,SelfDestructingSolverStorable3 [2022-07-22 11:00:47,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:00:47,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:00:47,068 INFO L85 PathProgramCache]: Analyzing trace with hash -396360796, now seen corresponding path program 3 times [2022-07-22 11:00:47,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:00:47,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825742092] [2022-07-22 11:00:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:00:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:00:47,096 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 11:00:47,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664852793] [2022-07-22 11:00:47,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 11:00:47,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:00:47,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:00:47,120 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) [2022-07-22 11:00:47,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 11:00:47,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 11:00:47,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 11:00:47,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 11:00:47,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:00:47,216 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 11:00:47,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:00:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 11:00:47,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:00:47,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825742092] [2022-07-22 11:00:47,240 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 11:00:47,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664852793] [2022-07-22 11:00:47,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664852793] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:00:47,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:00:47,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-22 11:00:47,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798836912] [2022-07-22 11:00:47,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 11:00:47,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 11:00:47,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:00:47,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 11:00:47,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 11:00:47,242 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:47,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:00:47,358 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-07-22 11:00:47,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 11:00:47,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 30 [2022-07-22 11:00:47,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:00:47,359 INFO L225 Difference]: With dead ends: 74 [2022-07-22 11:00:47,359 INFO L226 Difference]: Without dead ends: 57 [2022-07-22 11:00:47,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-22 11:00:47,360 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 127 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:00:47,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 36 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:00:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-22 11:00:47,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2022-07-22 11:00:47,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-07-22 11:00:47,364 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2022-07-22 11:00:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:00:47,364 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-07-22 11:00:47,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:00:47,364 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-07-22 11:00:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 11:00:47,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:00:47,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:00:47,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 11:00:47,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:00:47,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:00:47,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:00:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash 389318684, now seen corresponding path program 4 times [2022-07-22 11:00:47,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:00:47,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401396317] [2022-07-22 11:00:47,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:00:47,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:00:47,607 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 11:00:47,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394320572] [2022-07-22 11:00:47,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 11:00:47,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:00:47,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:00:47,609 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) [2022-07-22 11:00:47,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 11:00:47,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 11:00:47,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 11:00:47,662 WARN L261 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-22 11:00:47,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:00:47,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-22 11:00:47,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:47,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 22 [2022-07-22 11:00:47,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:47,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:47,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-22 11:00:47,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:47,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:00:47,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:47,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-07-22 11:00:47,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:47,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:47,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-07-22 11:00:47,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:47,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:00:47,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:47,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 44 [2022-07-22 11:00:47,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:47,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:47,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 39 [2022-07-22 11:00:48,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 47 [2022-07-22 11:00:48,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:00:48,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 45 [2022-07-22 11:00:48,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2022-07-22 11:00:48,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:00:48,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2022-07-22 11:00:48,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:00:48,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2022-07-22 11:00:48,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:00:48,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2022-07-22 11:00:48,594 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:00:48,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:01:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:01:36,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:01:36,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401396317] [2022-07-22 11:01:36,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 11:01:36,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394320572] [2022-07-22 11:01:36,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394320572] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:01:36,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:01:36,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 49 [2022-07-22 11:01:36,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680701279] [2022-07-22 11:01:36,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 11:01:36,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-22 11:01:36,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:01:36,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-22 11:01:36,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2133, Unknown=6, NotChecked=0, Total=2352 [2022-07-22 11:01:36,634 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:02:12,443 WARN L233 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 103 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 11:02:14,474 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((~N~0 Int)) (or (= (let ((.cse0 (+ ~N~0 1))) (* .cse0 .cse0)) (let ((.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse3 (let ((.cse14 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14))) (let ((.cse13 (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse9 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse11 (select .cse14 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse10 (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (let ((.cse6 (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse10 .cse11))))) (store .cse6 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse8 (select .cse6 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse7 (store .cse8 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse9 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse10 .cse11)))) (store .cse7 .cse5 (+ (select .cse8 .cse5) (select (select (store .cse6 |c_ULTIMATE.start_main_~a~0#1.base| .cse7) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))))))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse1 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (+ .cse1 .cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) (< 2 ~N~0) (not (< |c_ULTIMATE.start_main_~i~0#1| ~N~0)))) (or (< 2 c_~N~0) (= (let ((.cse15 (+ c_~N~0 1))) (* .cse15 .cse15)) (let ((.cse20 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse18 (let ((.cse27 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse24 (select .cse27 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse26 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse25 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse24 .cse26))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse20))) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse24 .cse25 .cse26))))) (store .cse21 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse23 (select .cse21 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse22 (store .cse23 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse24 .cse25 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse26)))) (store .cse22 .cse20 (+ (select .cse23 .cse20) (select (select (store .cse21 |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))))) (let ((.cse19 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse16 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse17 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse16)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse20))) (+ .cse16 .cse17 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse16 .cse17))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))))))))) is different from false [2022-07-22 11:02:24,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-22 11:02:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:02:51,498 INFO L93 Difference]: Finished difference Result 111 states and 128 transitions. [2022-07-22 11:02:51,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-22 11:02:51,501 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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 38 [2022-07-22 11:02:51,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:02:51,503 INFO L225 Difference]: With dead ends: 111 [2022-07-22 11:02:51,503 INFO L226 Difference]: Without dead ends: 109 [2022-07-22 11:02:51,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 115.4s TimeCoverageRelationStatistics Valid=376, Invalid=4731, Unknown=9, NotChecked=140, Total=5256 [2022-07-22 11:02:51,505 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-22 11:02:51,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 153 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 770 Invalid, 0 Unknown, 230 Unchecked, 6.6s Time] [2022-07-22 11:02:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-22 11:02:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 86. [2022-07-22 11:02:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 85 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:02:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2022-07-22 11:02:51,515 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 38 [2022-07-22 11:02:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:02:51,516 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2022-07-22 11:02:51,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:02:51,516 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2022-07-22 11:02:51,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-22 11:02:51,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:02:51,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:02:51,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 11:02:51,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:02:51,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:02:51,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:02:51,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1666934362, now seen corresponding path program 5 times [2022-07-22 11:02:51,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:02:51,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025432629] [2022-07-22 11:02:51,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:02:51,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:02:51,758 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 11:02:51,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [391486019] [2022-07-22 11:02:51,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 11:02:51,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:02:51,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:02:51,765 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) [2022-07-22 11:02:51,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 11:02:51,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-22 11:02:51,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 11:02:51,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 11:02:51,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:02:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 11:02:51,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:02:51,981 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 11:02:51,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:02:51,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025432629] [2022-07-22 11:02:51,982 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 11:02:51,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391486019] [2022-07-22 11:02:51,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391486019] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:02:51,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:02:51,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-22 11:02:51,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410762290] [2022-07-22 11:02:51,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 11:02:51,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 11:02:51,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:02:51,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 11:02:51,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 11:02:51,983 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:02:52,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:02:52,293 INFO L93 Difference]: Finished difference Result 173 states and 198 transitions. [2022-07-22 11:02:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 11:02:52,293 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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 40 [2022-07-22 11:02:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:02:52,294 INFO L225 Difference]: With dead ends: 173 [2022-07-22 11:02:52,294 INFO L226 Difference]: Without dead ends: 127 [2022-07-22 11:02:52,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-22 11:02:52,295 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 134 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 11:02:52,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 110 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 11:02:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-22 11:02:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 78. [2022-07-22 11:02:52,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:02:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2022-07-22 11:02:52,308 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 40 [2022-07-22 11:02:52,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:02:52,310 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2022-07-22 11:02:52,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:02:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2022-07-22 11:02:52,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-22 11:02:52,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:02:52,313 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:02:52,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 11:02:52,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:02:52,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:02:52,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:02:52,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2118485530, now seen corresponding path program 6 times [2022-07-22 11:02:52,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:02:52,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593407930] [2022-07-22 11:02:52,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:02:52,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:02:52,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 11:02:52,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697294209] [2022-07-22 11:02:52,556 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 11:02:52,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:02:52,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:02:52,558 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) [2022-07-22 11:02:52,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 11:02:52,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-07-22 11:02:52,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 11:02:52,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 11:02:52,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:02:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 11:02:52,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:02:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 11:02:52,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:02:52,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593407930] [2022-07-22 11:02:52,711 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 11:02:52,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697294209] [2022-07-22 11:02:52,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697294209] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:02:52,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:02:52,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-22 11:02:52,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266954398] [2022-07-22 11:02:52,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 11:02:52,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 11:02:52,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 11:02:52,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 11:02:52,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 11:02:52,712 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:02:52,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:02:52,896 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2022-07-22 11:02:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 11:02:52,896 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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 40 [2022-07-22 11:02:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:02:52,899 INFO L225 Difference]: With dead ends: 143 [2022-07-22 11:02:52,899 INFO L226 Difference]: Without dead ends: 107 [2022-07-22 11:02:52,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-22 11:02:52,900 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 144 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:02:52,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 59 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:02:52,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-22 11:02:52,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2022-07-22 11:02:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:02:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2022-07-22 11:02:52,909 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 40 [2022-07-22 11:02:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:02:52,909 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2022-07-22 11:02:52,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:02:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2022-07-22 11:02:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 11:02:52,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:02:52,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:02:52,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 11:02:53,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:02:53,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:02:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:02:53,128 INFO L85 PathProgramCache]: Analyzing trace with hash -465930606, now seen corresponding path program 1 times [2022-07-22 11:02:53,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 11:02:53,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262034118] [2022-07-22 11:02:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:02:53,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 11:02:53,145 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 11:02:53,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548260166] [2022-07-22 11:02:53,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:02:53,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:02:53,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:02:53,154 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) [2022-07-22 11:02:53,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 11:02:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:02:53,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-22 11:02:53,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:02:53,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-07-22 11:02:53,258 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 11:02:53,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:02:53,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-07-22 11:02:53,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 23 [2022-07-22 11:02:53,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:02:53,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-22 11:02:53,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:02:53,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:02:53,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-07-22 11:02:53,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:02:53,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2022-07-22 11:02:53,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 37 treesize of output 33 [2022-07-22 11:02:53,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 23 [2022-07-22 11:02:53,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 25 [2022-07-22 11:02:53,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:02:53,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-07-22 11:02:53,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:02:53,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:02:53,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2022-07-22 11:02:53,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:02:53,736 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-07-22 11:02:54,036 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 11:02:54,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 83 [2022-07-22 11:02:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 11:02:54,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:02:54,855 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 11:02:54,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 74 [2022-07-22 11:03:02,858 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse5 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse4 .cse5 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse4 .cse5))))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (or (= (+ (select .cse0 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (let ((.cse3 (+ c_~N~0 1))) (* .cse3 .cse3))) (not (= .cse2 (+ (* c_~N~0 2) (* c_~N~0 c_~N~0) 1)))))))) is different from false [2022-07-22 11:03:08,651 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-07-22 11:03:08,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 11:03:08,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262034118] [2022-07-22 11:03:08,651 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 11:03:08,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548260166] [2022-07-22 11:03:08,651 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-22 11:03:08,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-07-22 11:03:08,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 11:03:08,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 11:03:08,852 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:824) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:768) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 45 more [2022-07-22 11:03:08,855 INFO L158 Benchmark]: Toolchain (without parser) took 147193.51ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 57.4MB in the beginning and 53.1MB in the end (delta: 4.4MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2022-07-22 11:03:08,855 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 11:03:08,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.34ms. Allocated memory is still 98.6MB. Free memory was 57.2MB in the beginning and 72.8MB in the end (delta: -15.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 11:03:08,856 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.08ms. Allocated memory is still 98.6MB. Free memory was 72.8MB in the beginning and 71.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 11:03:08,856 INFO L158 Benchmark]: Boogie Preprocessor took 26.09ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 69.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 11:03:08,856 INFO L158 Benchmark]: RCFGBuilder took 253.00ms. Allocated memory is still 98.6MB. Free memory was 69.5MB in the beginning and 57.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 11:03:08,856 INFO L158 Benchmark]: TraceAbstraction took 146688.94ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 57.3MB in the beginning and 53.1MB in the end (delta: 4.2MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2022-07-22 11:03:08,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.34ms. Allocated memory is still 98.6MB. Free memory was 57.2MB in the beginning and 72.8MB in the end (delta: -15.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.08ms. Allocated memory is still 98.6MB. Free memory was 72.8MB in the beginning and 71.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.09ms. Allocated memory is still 98.6MB. Free memory was 71.2MB in the beginning and 69.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 253.00ms. Allocated memory is still 98.6MB. Free memory was 69.5MB in the beginning and 57.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 146688.94ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 57.3MB in the beginning and 53.1MB in the end (delta: 4.2MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ssina.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 11:03:10,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 11:03:10,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 11:03:10,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 11:03:10,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 11:03:10,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 11:03:10,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 11:03:10,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 11:03:10,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 11:03:10,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 11:03:10,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 11:03:10,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 11:03:10,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 11:03:10,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 11:03:10,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 11:03:10,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 11:03:10,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 11:03:10,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 11:03:10,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 11:03:10,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 11:03:10,515 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 11:03:10,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 11:03:10,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 11:03:10,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 11:03:10,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 11:03:10,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 11:03:10,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 11:03:10,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 11:03:10,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 11:03:10,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 11:03:10,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 11:03:10,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 11:03:10,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 11:03:10,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 11:03:10,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 11:03:10,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 11:03:10,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 11:03:10,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 11:03:10,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 11:03:10,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 11:03:10,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 11:03:10,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 11:03:10,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 11:03:10,560 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 11:03:10,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 11:03:10,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 11:03:10,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 11:03:10,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 11:03:10,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 11:03:10,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 11:03:10,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 11:03:10,562 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 11:03:10,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 11:03:10,563 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 11:03:10,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 11:03:10,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 11:03:10,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 11:03:10,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 11:03:10,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 11:03:10,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 11:03:10,564 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 11:03:10,564 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 11:03:10,564 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 11:03:10,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 11:03:10,564 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 11:03:10,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 11:03:10,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 11:03:10,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 11:03:10,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 11:03:10,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:03:10,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 11:03:10,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 11:03:10,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 11:03:10,566 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 11:03:10,566 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 11:03:10,566 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 11:03:10,566 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 11:03:10,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 11:03:10,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 11:03:10,567 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 [2022-07-22 11:03:10,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 11:03:10,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 11:03:10,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 11:03:10,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 11:03:10,991 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 11:03:10,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ssina.c [2022-07-22 11:03:11,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6003b27/6cee24c59a844b2fb2a1b52fa9361c0b/FLAG6ea184efb [2022-07-22 11:03:11,470 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 11:03:11,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c [2022-07-22 11:03:11,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6003b27/6cee24c59a844b2fb2a1b52fa9361c0b/FLAG6ea184efb [2022-07-22 11:03:11,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6003b27/6cee24c59a844b2fb2a1b52fa9361c0b [2022-07-22 11:03:11,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 11:03:11,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 11:03:11,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 11:03:11,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 11:03:11,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 11:03:11,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb88174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11, skipping insertion in model container [2022-07-22 11:03:11,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 11:03:11,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 11:03:11,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c[588,601] [2022-07-22 11:03:11,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:03:11,676 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 11:03:11,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c[588,601] [2022-07-22 11:03:11,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 11:03:11,718 INFO L208 MainTranslator]: Completed translation [2022-07-22 11:03:11,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11 WrapperNode [2022-07-22 11:03:11,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 11:03:11,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 11:03:11,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 11:03:11,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 11:03:11,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,760 INFO L137 Inliner]: procedures = 19, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 110 [2022-07-22 11:03:11,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 11:03:11,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 11:03:11,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 11:03:11,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 11:03:11,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 11:03:11,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 11:03:11,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 11:03:11,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 11:03:11,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11" (1/1) ... [2022-07-22 11:03:11,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 11:03:11,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 11:03:11,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 11:03:11,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 11:03:11,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 11:03:11,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 11:03:11,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 11:03:11,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-22 11:03:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 11:03:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 11:03:11,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 11:03:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-22 11:03:11,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 11:03:11,933 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 11:03:11,934 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 11:03:12,119 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 11:03:12,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 11:03:12,123 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-22 11:03:12,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:03:12 BoogieIcfgContainer [2022-07-22 11:03:12,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 11:03:12,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 11:03:12,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 11:03:12,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 11:03:12,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:03:11" (1/3) ... [2022-07-22 11:03:12,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e76b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:03:12, skipping insertion in model container [2022-07-22 11:03:12,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:03:11" (2/3) ... [2022-07-22 11:03:12,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e76b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:03:12, skipping insertion in model container [2022-07-22 11:03:12,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:03:12" (3/3) ... [2022-07-22 11:03:12,160 INFO L111 eAbstractionObserver]: Analyzing ICFG ssina.c [2022-07-22 11:03:12,169 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 11:03:12,183 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 11:03:12,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 11:03:12,239 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@cf020e5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@8ea289e [2022-07-22 11:03:12,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 11:03:12,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:03:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 11:03:12,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:03:12,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:03:12,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:03:12,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:03:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2022-07-22 11:03:12,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 11:03:12,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312041248] [2022-07-22 11:03:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:03:12,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 11:03:12,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 11:03:12,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 11:03:12,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 11:03:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:03:12,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 11:03:12,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:03:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:03:12,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:03:12,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 11:03:12,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312041248] [2022-07-22 11:03:12,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312041248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:03:12,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:03:12,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 11:03:12,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215015360] [2022-07-22 11:03:12,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:03:12,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 11:03:12,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 11:03:12,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 11:03:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 11:03:12,379 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:03:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:03:12,398 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-07-22 11:03:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 11:03:12,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2022-07-22 11:03:12,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:03:12,404 INFO L225 Difference]: With dead ends: 56 [2022-07-22 11:03:12,404 INFO L226 Difference]: Without dead ends: 26 [2022-07-22 11:03:12,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 11:03:12,411 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2022-07-22 11:03:12,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 11:03:12,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-22 11:03:12,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-22 11:03:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:03:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-07-22 11:03:12,436 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-07-22 11:03:12,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:03:12,437 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-07-22 11:03:12,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:03:12,437 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-07-22 11:03:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 11:03:12,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:03:12,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 11:03:12,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-22 11:03:12,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 11:03:12,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:03:12,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:03:12,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2022-07-22 11:03:12,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 11:03:12,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924717703] [2022-07-22 11:03:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:03:12,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 11:03:12,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 11:03:12,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 11:03:12,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 11:03:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:03:12,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 11:03:12,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:03:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:03:12,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 11:03:12,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 11:03:12,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924717703] [2022-07-22 11:03:12,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924717703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 11:03:12,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 11:03:12,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 11:03:12,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632942018] [2022-07-22 11:03:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 11:03:12,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 11:03:12,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 11:03:12,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 11:03:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 11:03:12,870 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:03:13,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 11:03:13,049 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-07-22 11:03:13,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 11:03:13,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2022-07-22 11:03:13,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 11:03:13,055 INFO L225 Difference]: With dead ends: 61 [2022-07-22 11:03:13,055 INFO L226 Difference]: Without dead ends: 42 [2022-07-22 11:03:13,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 11:03:13,057 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 70 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 11:03:13,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 16 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 11:03:13,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-22 11:03:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-07-22 11:03:13,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:03:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-07-22 11:03:13,063 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2022-07-22 11:03:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 11:03:13,063 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-07-22 11:03:13,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 11:03:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-07-22 11:03:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 11:03:13,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 11:03:13,064 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 11:03:13,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-22 11:03:13,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 11:03:13,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 11:03:13,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 11:03:13,273 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2022-07-22 11:03:13,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 11:03:13,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758558707] [2022-07-22 11:03:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 11:03:13,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 11:03:13,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 11:03:13,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 11:03:13,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-22 11:03:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 11:03:13,483 WARN L261 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-22 11:03:13,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 11:03:13,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 9 [2022-07-22 11:03:13,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:03:13,598 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:03:13,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-22 11:03:13,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:03:13,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:03:13,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:03:13,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 50 [2022-07-22 11:03:13,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:03:13,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:03:13,987 INFO L356 Elim1Store]: treesize reduction 60, result has 25.9 percent of original size [2022-07-22 11:03:13,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 103 treesize of output 63 [2022-07-22 11:03:14,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:03:14,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:03:14,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 73 [2022-07-22 11:03:14,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:03:14,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:03:14,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:03:14,344 INFO L356 Elim1Store]: treesize reduction 52, result has 24.6 percent of original size [2022-07-22 11:03:14,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 99 treesize of output 75 [2022-07-22 11:03:14,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:03:14,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:03:14,467 INFO L356 Elim1Store]: treesize reduction 60, result has 25.9 percent of original size [2022-07-22 11:03:14,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 147 treesize of output 107 [2022-07-22 11:03:14,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 11:03:14,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 159 [2022-07-22 11:03:14,973 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-07-22 11:03:14,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 391 treesize of output 355 [2022-07-22 11:03:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:03:15,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 11:04:55,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 11:05:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 11:05:05,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 11:05:05,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758558707] [2022-07-22 11:05:05,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758558707] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 11:05:05,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 11:05:05,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-07-22 11:05:05,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247350263] [2022-07-22 11:05:05,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 11:05:05,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-22 11:05:05,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 11:05:05,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-22 11:05:05,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=950, Unknown=16, NotChecked=0, Total=1122 [2022-07-22 11:05:05,589 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 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)