./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/mods.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/mods.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 f15d84a1f588b4a2fae1a1f53311fed1d9572550b31409f886696465cdc8f8ba --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:03:05,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:03:05,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:03:05,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:03:05,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:03:05,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:03:05,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:03:05,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:03:05,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:03:05,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:03:05,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:03:05,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:03:05,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:03:05,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:03:05,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:03:05,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:03:05,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:03:05,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:03:05,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:03:05,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:03:05,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:03:05,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:03:05,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:03:05,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:03:05,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:03:05,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:03:05,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:03:05,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:03:05,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:03:05,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:03:05,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:03:05,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:03:05,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:03:05,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:03:05,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:03:05,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:03:05,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:03:05,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:03:05,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:03:05,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:03:05,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:03:05,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 00:03:05,829 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:03:05,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:03:05,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:03:05,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:03:05,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:03:05,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:03:05,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:03:05,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:03:05,832 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:03:05,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:03:05,832 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:03:05,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 00:03:05,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:03:05,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:03:05,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:03:05,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:03:05,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:03:05,834 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:03:05,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:03:05,834 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:03:05,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:03:05,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:03:05,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:03:05,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:03:05,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:03:05,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:03:05,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:03:05,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:03:05,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 00:03:05,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 00:03:05,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:03:05,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:03:05,837 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:03:05,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:03:05,837 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:03:05,837 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f15d84a1f588b4a2fae1a1f53311fed1d9572550b31409f886696465cdc8f8ba [2023-02-17 00:03:06,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:03:06,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:03:06,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:03:06,156 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:03:06,157 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:03:06,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/mods.c [2023-02-17 00:03:07,359 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:03:07,591 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:03:07,592 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/mods.c [2023-02-17 00:03:07,599 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fe631dbe/96462f9fc9a4498cabafd871f111787c/FLAGb34a20645 [2023-02-17 00:03:07,613 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fe631dbe/96462f9fc9a4498cabafd871f111787c [2023-02-17 00:03:07,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:03:07,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:03:07,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:03:07,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:03:07,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:03:07,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c56543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07, skipping insertion in model container [2023-02-17 00:03:07,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:03:07,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:03:07,805 WARN L237 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/mods.c[587,600] [2023-02-17 00:03:07,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:03:07,829 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:03:07,840 WARN L237 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/mods.c[587,600] [2023-02-17 00:03:07,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:03:07,858 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:03:07,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07 WrapperNode [2023-02-17 00:03:07,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:03:07,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:03:07,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:03:07,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:03:07,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,896 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 104 [2023-02-17 00:03:07,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:03:07,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:03:07,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:03:07,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:03:07,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,914 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:03:07,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:03:07,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:03:07,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:03:07,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (1/1) ... [2023-02-17 00:03:07,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:03:07,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:03:07,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 00:03:07,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 00:03:08,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:03:08,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 00:03:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 00:03:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 00:03:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 00:03:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:03:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:03:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 00:03:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 00:03:08,112 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:03:08,114 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:03:08,310 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:03:08,316 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:03:08,316 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-17 00:03:08,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:03:08 BoogieIcfgContainer [2023-02-17 00:03:08,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:03:08,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:03:08,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:03:08,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:03:08,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:03:07" (1/3) ... [2023-02-17 00:03:08,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ff89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:03:08, skipping insertion in model container [2023-02-17 00:03:08,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:03:07" (2/3) ... [2023-02-17 00:03:08,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ff89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:03:08, skipping insertion in model container [2023-02-17 00:03:08,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:03:08" (3/3) ... [2023-02-17 00:03:08,329 INFO L112 eAbstractionObserver]: Analyzing ICFG mods.c [2023-02-17 00:03:08,348 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:03:08,349 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 00:03:08,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:03:08,466 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7e2b0dc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:03:08,466 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 00:03:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:03:08,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 00:03:08,476 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:03:08,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:03:08,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:03:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:03:08,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2023-02-17 00:03:08,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:03:08,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256559577] [2023-02-17 00:03:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:03:08,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:03:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:03:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:03:08,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:03:08,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256559577] [2023-02-17 00:03:08,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256559577] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:03:08,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:03:08,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 00:03:08,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794860815] [2023-02-17 00:03:08,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:03:08,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 00:03:08,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:03:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 00:03:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:03:08,676 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:03:08,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:03:08,692 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2023-02-17 00:03:08,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 00:03:08,694 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-17 00:03:08,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:03:08,700 INFO L225 Difference]: With dead ends: 50 [2023-02-17 00:03:08,700 INFO L226 Difference]: Without dead ends: 23 [2023-02-17 00:03:08,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:03:08,706 INFO L413 NwaCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:03:08,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:03:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-17 00:03:08,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-17 00:03:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:03:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-17 00:03:08,741 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2023-02-17 00:03:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:03:08,742 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-17 00:03:08,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:03:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-17 00:03:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 00:03:08,743 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:03:08,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:03:08,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 00:03:08,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:03:08,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:03:08,745 INFO L85 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2023-02-17 00:03:08,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:03:08,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308563024] [2023-02-17 00:03:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:03:08,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:03:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:03:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:03:08,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:03:08,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308563024] [2023-02-17 00:03:08,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308563024] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:03:08,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:03:08,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 00:03:08,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678606564] [2023-02-17 00:03:08,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:03:08,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 00:03:08,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:03:08,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 00:03:08,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 00:03:08,903 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:03:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:03:08,996 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2023-02-17 00:03:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 00:03:08,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-17 00:03:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:03:08,997 INFO L225 Difference]: With dead ends: 53 [2023-02-17 00:03:08,997 INFO L226 Difference]: Without dead ends: 37 [2023-02-17 00:03:08,998 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 [2023-02-17 00:03:09,000 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:03:09,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 17 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:03:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-17 00:03:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2023-02-17 00:03:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 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) [2023-02-17 00:03:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-02-17 00:03:09,013 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2023-02-17 00:03:09,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:03:09,015 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-02-17 00:03:09,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:03:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-02-17 00:03:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 00:03:09,017 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:03:09,017 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] [2023-02-17 00:03:09,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 00:03:09,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:03:09,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:03:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2023-02-17 00:03:09,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:03:09,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153430374] [2023-02-17 00:03:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:03:09,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:03:09,053 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 00:03:09,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403579605] [2023-02-17 00:03:09,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:03:09,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:03:09,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:03:09,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:03:09,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 00:03:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:03:09,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-17 00:03:09,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:03:09,245 INFO L350 Elim1Store]: Elim1 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 [2023-02-17 00:03:09,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-17 00:03:09,276 INFO L350 Elim1Store]: Elim1 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 [2023-02-17 00:03:09,317 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 30 [2023-02-17 00:03:09,366 INFO L350 Elim1Store]: Elim1 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 60 treesize of output 31 [2023-02-17 00:03:09,442 INFO L350 Elim1Store]: Elim1 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 319 treesize of output 142 [2023-02-17 00:03:09,774 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:03:09,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 384 treesize of output 348 [2023-02-17 00:03:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:03:10,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:03:12,666 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (+ (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (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|)))) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 0)))) (and (forall ((v_ArrVal_51 Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_51)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse4 (+ (select .cse6 .cse7) v_ArrVal_51))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse6 .cse7 .cse4)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (+ .cse0 1))) (let ((.cse1 (mod .cse4 .cse2))) (or (= (+ (+ (- 1) (- .cse0)) .cse1) 0) (< .cse2 0) (not (<= .cse3 v_ArrVal_51)) (= .cse1 0) (not (< .cse4 0)))))))))) (forall ((v_ArrVal_51 Int)) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_51)))) (let ((.cse13 (select .cse12 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse11 (+ (select .cse13 .cse7) v_ArrVal_51))) (let ((.cse9 (+ (select (select (store .cse12 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse13 .cse7 .cse11)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) (let ((.cse10 (mod .cse11 .cse9))) (or (not (< .cse9 0)) (= (+ .cse9 .cse10) 0) (not (<= .cse3 v_ArrVal_51)) (= .cse10 0) (not (< .cse11 0))))))))) (forall ((v_ArrVal_51 Int)) (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_51)))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse15 (+ (select .cse17 .cse7) v_ArrVal_51))) (let ((.cse14 (+ (select (select (store .cse16 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse17 .cse7 .cse15)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) (or (not (< .cse14 0)) (< .cse15 0) (not (<= .cse3 v_ArrVal_51)) (= (mod .cse15 .cse14) 0))))))) (forall ((v_ArrVal_51 Int)) (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_51)))) (let ((.cse21 (select .cse20 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse19 (+ (select .cse21 .cse7) v_ArrVal_51))) (let ((.cse18 (+ (select (select (store .cse20 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse21 .cse7 .cse19)) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) (or (< .cse18 0) (< .cse19 0) (not (<= .cse3 v_ArrVal_51)) (= (mod .cse19 .cse18) 0)))))))))) is different from false [2023-02-17 00:03:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 1 not checked. [2023-02-17 00:03:45,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:03:45,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153430374] [2023-02-17 00:03:45,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 00:03:45,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403579605] [2023-02-17 00:03:45,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403579605] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:03:45,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:03:45,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2023-02-17 00:03:45,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410128063] [2023-02-17 00:03:45,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:03:45,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 00:03:45,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:03:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 00:03:45,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=378, Unknown=12, NotChecked=40, Total=506 [2023-02-17 00:03:45,315 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:03:56,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-17 00:03:58,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-17 00:04:16,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:04:16,938 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2023-02-17 00:04:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-17 00:04:16,939 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 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 24 [2023-02-17 00:04:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:04:16,941 INFO L225 Difference]: With dead ends: 80 [2023-02-17 00:04:16,941 INFO L226 Difference]: Without dead ends: 78 [2023-02-17 00:04:16,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 56.8s TimeCoverageRelationStatistics Valid=352, Invalid=1797, Unknown=17, NotChecked=90, Total=2256 [2023-02-17 00:04:16,943 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 170 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 32 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-02-17 00:04:16,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 160 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 315 Invalid, 2 Unknown, 48 Unchecked, 9.7s Time] [2023-02-17 00:04:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-02-17 00:04:16,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 44. [2023-02-17 00:04:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 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) [2023-02-17 00:04:16,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-02-17 00:04:16,957 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 24 [2023-02-17 00:04:16,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:04:16,957 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-02-17 00:04:16,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:04:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-02-17 00:04:16,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 00:04:16,958 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:04:16,959 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] [2023-02-17 00:04:16,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 00:04:17,159 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 [2023-02-17 00:04:17,160 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:04:17,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:04:17,160 INFO L85 PathProgramCache]: Analyzing trace with hash 775449632, now seen corresponding path program 2 times [2023-02-17 00:04:17,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:04:17,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755780236] [2023-02-17 00:04:17,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:04:17,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:04:17,179 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 00:04:17,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100077910] [2023-02-17 00:04:17,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 00:04:17,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:04:17,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:04:17,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:04:17,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 00:04:17,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 00:04:17,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:04:17,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 00:04:17,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:04:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 00:04:17,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:04:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 00:04:17,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:04:17,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755780236] [2023-02-17 00:04:17,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 00:04:17,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100077910] [2023-02-17 00:04:17,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100077910] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:04:17,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:04:17,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-17 00:04:17,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969445038] [2023-02-17 00:04:17,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:04:17,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 00:04:17,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:04:17,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 00:04:17,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:04:17,291 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:04:17,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:04:17,490 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2023-02-17 00:04:17,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 00:04:17,491 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 26 [2023-02-17 00:04:17,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:04:17,491 INFO L225 Difference]: With dead ends: 108 [2023-02-17 00:04:17,492 INFO L226 Difference]: Without dead ends: 80 [2023-02-17 00:04:17,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-17 00:04:17,493 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 76 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:04:17,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 63 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:04:17,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-17 00:04:17,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 58. [2023-02-17 00:04:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:04:17,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2023-02-17 00:04:17,506 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 26 [2023-02-17 00:04:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:04:17,507 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2023-02-17 00:04:17,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:04:17,507 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2023-02-17 00:04:17,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 00:04:17,508 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:04:17,508 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:04:17,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 00:04:17,715 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 [2023-02-17 00:04:17,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:04:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:04:17,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1411307230, now seen corresponding path program 3 times [2023-02-17 00:04:17,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:04:17,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093924015] [2023-02-17 00:04:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:04:17,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:04:17,744 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 00:04:17,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664218398] [2023-02-17 00:04:17,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 00:04:17,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:04:17,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:04:17,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:04:17,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 00:04:17,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-17 00:04:17,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:04:17,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 00:04:17,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:04:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 00:04:17,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:04:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 00:04:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:04:17,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093924015] [2023-02-17 00:04:17,879 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 00:04:17,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664218398] [2023-02-17 00:04:17,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664218398] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:04:17,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:04:17,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-17 00:04:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14171406] [2023-02-17 00:04:17,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:04:17,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 00:04:17,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:04:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 00:04:17,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:04:17,881 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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) [2023-02-17 00:04:17,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:04:17,997 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2023-02-17 00:04:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 00:04:17,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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) Word has length 28 [2023-02-17 00:04:17,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:04:17,998 INFO L225 Difference]: With dead ends: 101 [2023-02-17 00:04:17,999 INFO L226 Difference]: Without dead ends: 51 [2023-02-17 00:04:17,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-17 00:04:18,000 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 69 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:04:18,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 40 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:04:18,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-17 00:04:18,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2023-02-17 00:04:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:04:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-02-17 00:04:18,006 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 28 [2023-02-17 00:04:18,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:04:18,007 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-02-17 00:04:18,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 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) [2023-02-17 00:04:18,007 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-02-17 00:04:18,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-17 00:04:18,008 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:04:18,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:04:18,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 00:04:18,214 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 [2023-02-17 00:04:18,215 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:04:18,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:04:18,215 INFO L85 PathProgramCache]: Analyzing trace with hash -826292134, now seen corresponding path program 4 times [2023-02-17 00:04:18,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:04:18,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399885962] [2023-02-17 00:04:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:04:18,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:04:18,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 00:04:18,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343832663] [2023-02-17 00:04:18,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 00:04:18,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:04:18,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:04:18,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:04:18,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 00:04:18,398 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 00:04:18,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:04:18,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 74 conjunts are in the unsatisfiable core [2023-02-17 00:04:18,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:04:18,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-17 00:04:18,413 INFO L350 Elim1Store]: Elim1 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 [2023-02-17 00:04:18,418 INFO L350 Elim1Store]: Elim1 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 [2023-02-17 00:04:18,430 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 38 [2023-02-17 00:04:18,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:04:18,490 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 88 [2023-02-17 00:04:18,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 00:04:18,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 00:04:18,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 2 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 44 case distinctions, treesize of input 283 treesize of output 961