./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sina5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/sina5.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 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 11:39:52,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 11:39:52,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 11:39:52,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 11:39:53,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 11:39:53,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 11:39:53,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 11:39:53,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 11:39:53,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 11:39:53,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 11:39:53,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 11:39:53,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 11:39:53,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 11:39:53,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 11:39:53,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 11:39:53,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 11:39:53,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 11:39:53,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 11:39:53,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 11:39:53,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 11:39:53,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 11:39:53,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 11:39:53,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 11:39:53,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 11:39:53,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 11:39:53,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 11:39:53,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 11:39:53,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 11:39:53,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 11:39:53,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 11:39:53,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 11:39:53,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 11:39:53,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 11:39:53,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 11:39:53,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 11:39:53,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 11:39:53,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 11:39:53,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 11:39:53,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 11:39:53,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 11:39:53,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 11:39:53,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 11:39:53,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 11:39:53,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 11:39:53,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 11:39:53,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 11:39:53,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 11:39:53,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 11:39:53,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 11:39:53,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 11:39:53,107 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 11:39:53,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 11:39:53,108 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 11:39:53,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 11:39:53,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 11:39:53,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 11:39:53,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 11:39:53,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 11:39:53,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 11:39:53,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 11:39:53,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 11:39:53,111 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 11:39:53,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 11:39:53,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 11:39:53,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 11:39:53,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 11:39:53,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 11:39:53,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 11:39:53,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 11:39:53,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 11:39:53,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 11:39:53,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 11:39:53,113 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 11:39:53,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 11:39:53,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 11:39:53,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 11:39:53,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503513a726b63dcf7252b591818901fbaab844b1443a8550e123aa98a06238f6 [2021-12-14 11:39:53,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 11:39:53,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 11:39:53,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 11:39:53,440 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 11:39:53,441 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 11:39:53,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sina5.c [2021-12-14 11:39:53,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/779339b20/31b609ff2e8e4fa7b2baa1db201eb221/FLAG793f32cf0 [2021-12-14 11:39:53,984 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 11:39:53,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sina5.c [2021-12-14 11:39:54,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/779339b20/31b609ff2e8e4fa7b2baa1db201eb221/FLAG793f32cf0 [2021-12-14 11:39:54,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/779339b20/31b609ff2e8e4fa7b2baa1db201eb221 [2021-12-14 11:39:54,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 11:39:54,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 11:39:54,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 11:39:54,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 11:39:54,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 11:39:54,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24648fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54, skipping insertion in model container [2021-12-14 11:39:54,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 11:39:54,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 11:39:54,567 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/sina5.c[588,601] [2021-12-14 11:39:54,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 11:39:54,595 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 11:39:54,609 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/sina5.c[588,601] [2021-12-14 11:39:54,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 11:39:54,660 INFO L208 MainTranslator]: Completed translation [2021-12-14 11:39:54,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54 WrapperNode [2021-12-14 11:39:54,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 11:39:54,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 11:39:54,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 11:39:54,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 11:39:54,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,713 INFO L137 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 109 [2021-12-14 11:39:54,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 11:39:54,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 11:39:54,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 11:39:54,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 11:39:54,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 11:39:54,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 11:39:54,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 11:39:54,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 11:39:54,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54" (1/1) ... [2021-12-14 11:39:54,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 11:39:54,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:39:54,801 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) [2021-12-14 11:39:54,809 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 [2021-12-14 11:39:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 11:39:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 11:39:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 11:39:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 11:39:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 11:39:54,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 11:39:54,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 11:39:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 11:39:54,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 11:39:54,898 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 11:39:54,900 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 11:39:55,113 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 11:39:55,120 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 11:39:55,135 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-14 11:39:55,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:39:55 BoogieIcfgContainer [2021-12-14 11:39:55,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 11:39:55,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 11:39:55,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 11:39:55,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 11:39:55,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:39:54" (1/3) ... [2021-12-14 11:39:55,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7203ca53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:39:55, skipping insertion in model container [2021-12-14 11:39:55,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:39:54" (2/3) ... [2021-12-14 11:39:55,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7203ca53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:39:55, skipping insertion in model container [2021-12-14 11:39:55,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:39:55" (3/3) ... [2021-12-14 11:39:55,160 INFO L111 eAbstractionObserver]: Analyzing ICFG sina5.c [2021-12-14 11:39:55,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 11:39:55,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 11:39:55,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 11:39:55,257 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 11:39:55,257 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 11:39:55,282 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) [2021-12-14 11:39:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 11:39:55,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:39:55,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:39:55,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:39:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:39:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2021-12-14 11:39:55,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:39:55,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855566482] [2021-12-14 11:39:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:39:55,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:39:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:39:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:39:55,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:39:55,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855566482] [2021-12-14 11:39:55,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855566482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:39:55,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:39:55,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 11:39:55,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091235015] [2021-12-14 11:39:55,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:39:55,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 11:39:55,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:39:55,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 11:39:55,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 11:39:55,524 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) [2021-12-14 11:39:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:39:55,543 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2021-12-14 11:39:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 11:39:55,546 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 [2021-12-14 11:39:55,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:39:55,552 INFO L225 Difference]: With dead ends: 56 [2021-12-14 11:39:55,552 INFO L226 Difference]: Without dead ends: 26 [2021-12-14 11:39:55,555 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:39:55,558 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:39:55,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:39:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-14 11:39:55,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-14 11:39:55,587 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) [2021-12-14 11:39:55,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-12-14 11:39:55,589 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2021-12-14 11:39:55,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:39:55,589 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-12-14 11:39:55,589 INFO L471 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) [2021-12-14 11:39:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-12-14 11:39:55,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 11:39:55,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:39:55,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:39:55,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 11:39:55,592 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:39:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:39:55,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2021-12-14 11:39:55,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:39:55,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110343137] [2021-12-14 11:39:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:39:55,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:39:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:39:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:39:55,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:39:55,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110343137] [2021-12-14 11:39:55,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110343137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:39:55,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:39:55,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 11:39:55,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676976319] [2021-12-14 11:39:55,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:39:55,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 11:39:55,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:39:55,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 11:39:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-14 11:39:55,685 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) [2021-12-14 11:39:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:39:55,779 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2021-12-14 11:39:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 11:39:55,780 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 [2021-12-14 11:39:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:39:55,781 INFO L225 Difference]: With dead ends: 61 [2021-12-14 11:39:55,783 INFO L226 Difference]: Without dead ends: 42 [2021-12-14 11:39:55,784 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:39:55,785 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2021-12-14 11:39:55,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 18 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:39:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-14 11:39:55,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2021-12-14 11:39:55,794 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) [2021-12-14 11:39:55,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-14 11:39:55,796 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2021-12-14 11:39:55,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:39:55,797 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-14 11:39:55,798 INFO L471 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) [2021-12-14 11:39:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-14 11:39:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-14 11:39:55,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:39:55,802 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:39:55,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 11:39:55,803 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:39:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:39:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2021-12-14 11:39:55,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:39:55,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59817330] [2021-12-14 11:39:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:39:55,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:39:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:39:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:39:56,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:39:56,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59817330] [2021-12-14 11:39:56,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59817330] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 11:39:56,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606965145] [2021-12-14 11:39:56,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:39:56,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:39:56,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:39:56,859 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) [2021-12-14 11:39:56,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 11:39:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:39:56,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-14 11:39:56,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 11:39:57,065 INFO L388 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 [2021-12-14 11:39:57,093 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 11:39:57,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-12-14 11:39:57,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2021-12-14 11:39:57,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-12-14 11:39:57,573 INFO L388 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2021-12-14 11:39:57,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 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 [2021-12-14 11:39:57,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2021-12-14 11:39:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:39:58,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 11:39:58,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:39:58,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:39:58,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:39:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:39:58,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606965145] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 11:39:58,978 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 11:39:58,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 40 [2021-12-14 11:39:58,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841976309] [2021-12-14 11:39:58,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 11:39:58,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-14 11:39:58,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:39:58,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-14 11:39:58,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560 [2021-12-14 11:39:58,984 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 40 states, 40 states have (on average 1.75) internal successors, (70), 40 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) [2021-12-14 11:39:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:39:59,602 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2021-12-14 11:39:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-14 11:39:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.75) internal successors, (70), 40 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 28 [2021-12-14 11:39:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:39:59,604 INFO L225 Difference]: With dead ends: 64 [2021-12-14 11:39:59,604 INFO L226 Difference]: Without dead ends: 62 [2021-12-14 11:39:59,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 31 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=257, Invalid=1549, Unknown=0, NotChecked=0, Total=1806 [2021-12-14 11:39:59,606 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 43 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 11:39:59,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 158 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 415 Invalid, 0 Unknown, 54 Unchecked, 0.4s Time] [2021-12-14 11:39:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-14 11:39:59,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2021-12-14 11:39:59,614 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) [2021-12-14 11:39:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-12-14 11:39:59,615 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 28 [2021-12-14 11:39:59,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:39:59,615 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-12-14 11:39:59,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.75) internal successors, (70), 40 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) [2021-12-14 11:39:59,616 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2021-12-14 11:39:59,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-14 11:39:59,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:39:59,617 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:39:59,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 11:39:59,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:39:59,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:39:59,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:39:59,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1642466588, now seen corresponding path program 2 times [2021-12-14 11:39:59,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:39:59,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405475413] [2021-12-14 11:39:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:39:59,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:39:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:39:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 11:39:59,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:39:59,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405475413] [2021-12-14 11:39:59,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405475413] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 11:39:59,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167021677] [2021-12-14 11:39:59,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 11:39:59,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:39:59,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:39:59,911 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) [2021-12-14 11:39:59,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 11:39:59,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 11:39:59,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 11:39:59,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 11:39:59,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 11:40:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 11:40:00,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 11:40:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 11:40:00,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167021677] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 11:40:00,117 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 11:40:00,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-14 11:40:00,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109106072] [2021-12-14 11:40:00,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 11:40:00,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 11:40:00,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:40:00,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 11:40:00,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-14 11:40:00,120 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) [2021-12-14 11:40:00,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:40:00,263 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2021-12-14 11:40:00,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:40:00,264 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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 30 [2021-12-14 11:40:00,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:40:00,265 INFO L225 Difference]: With dead ends: 134 [2021-12-14 11:40:00,265 INFO L226 Difference]: Without dead ends: 78 [2021-12-14 11:40:00,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-12-14 11:40:00,267 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 87 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:40:00,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 53 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:40:00,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-14 11:40:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2021-12-14 11:40:00,274 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) [2021-12-14 11:40:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2021-12-14 11:40:00,275 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 30 [2021-12-14 11:40:00,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:40:00,275 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2021-12-14 11:40:00,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) [2021-12-14 11:40:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2021-12-14 11:40:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-14 11:40:00,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:40:00,276 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:40:00,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 11:40:00,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-14 11:40:00,500 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:40:00,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:40:00,500 INFO L85 PathProgramCache]: Analyzing trace with hash -396360796, now seen corresponding path program 3 times [2021-12-14 11:40:00,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:40:00,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433869169] [2021-12-14 11:40:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:40:00,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:40:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:40:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 11:40:00,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:40:00,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433869169] [2021-12-14 11:40:00,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433869169] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 11:40:00,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173070980] [2021-12-14 11:40:00,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 11:40:00,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:40:00,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:40:00,575 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) [2021-12-14 11:40:00,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 11:40:00,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-14 11:40:00,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 11:40:00,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 11:40:00,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 11:40:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 11:40:00,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 11:40:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 11:40:00,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173070980] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 11:40:00,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 11:40:00,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-14 11:40:00,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216651547] [2021-12-14 11:40:00,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 11:40:00,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 11:40:00,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:40:00,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 11:40:00,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-14 11:40:00,788 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 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) [2021-12-14 11:40:00,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:40:00,906 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2021-12-14 11:40:00,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:40:00,907 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 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 30 [2021-12-14 11:40:00,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:40:00,909 INFO L225 Difference]: With dead ends: 74 [2021-12-14 11:40:00,910 INFO L226 Difference]: Without dead ends: 57 [2021-12-14 11:40:00,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-12-14 11:40:00,913 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 114 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:40:00,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 43 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:40:00,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-14 11:40:00,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2021-12-14 11:40:00,925 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) [2021-12-14 11:40:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2021-12-14 11:40:00,927 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2021-12-14 11:40:00,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:40:00,928 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2021-12-14 11:40:00,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 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) [2021-12-14 11:40:00,929 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2021-12-14 11:40:00,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 11:40:00,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:40:00,931 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:40:00,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 11:40:01,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:40:01,154 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:40:01,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:40:01,155 INFO L85 PathProgramCache]: Analyzing trace with hash 389318684, now seen corresponding path program 4 times [2021-12-14 11:40:01,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:40:01,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77805859] [2021-12-14 11:40:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:40:01,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:40:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:40:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:40:03,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:40:03,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77805859] [2021-12-14 11:40:03,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77805859] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 11:40:03,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441602125] [2021-12-14 11:40:03,160 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-14 11:40:03,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:40:03,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:40:03,164 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) [2021-12-14 11:40:03,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 11:40:03,234 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-14 11:40:03,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 11:40:03,236 WARN L261 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-14 11:40:03,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 11:40:03,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:03,268 INFO L388 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 18 treesize of output 16 [2021-12-14 11:40:03,282 INFO L388 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 [2021-12-14 11:40:03,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:03,357 INFO L388 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 23 treesize of output 22 [2021-12-14 11:40:03,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:03,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:03,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 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 [2021-12-14 11:40:03,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:03,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:03,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:03,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-12-14 11:40:04,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2021-12-14 11:40:04,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:40:04,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2021-12-14 11:40:04,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 57 [2021-12-14 11:40:04,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:40:04,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:04,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-12-14 11:40:05,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2021-12-14 11:40:05,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:40:05,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2021-12-14 11:40:05,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:40:05,615 INFO L354 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2021-12-14 11:40:05,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 74 [2021-12-14 11:40:05,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:05,968 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-14 11:40:05,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 41 [2021-12-14 11:40:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:40:06,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 11:40:08,243 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_81| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_81| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_257 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_81| 8)) v_ArrVal_257) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (* 2 c_~N~0) 1))))) is different from false [2021-12-14 11:40:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-14 11:40:31,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441602125] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 11:40:31,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 11:40:31,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 26] total 77 [2021-12-14 11:40:31,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298098636] [2021-12-14 11:40:31,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 11:40:31,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-12-14 11:40:31,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:40:31,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-12-14 11:40:31,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=5219, Unknown=26, NotChecked=148, Total=5852 [2021-12-14 11:40:31,409 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 77 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 77 states have internal predecessors, (103), 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) [2021-12-14 11:40:34,650 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8))) (+ (* 2 c_~N~0) 1)) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_81| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_81| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_257 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_81| 8)) v_ArrVal_257) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (* 2 c_~N~0) 1))))) (< 1 c_~N~0) (<= c_~N~0 2) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~b~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse1 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse2 (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|))) (and (= .cse1 4) (= (select .cse2 0) 1) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8))) (+ .cse1 1)) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (= .cse1 (+ 3 (select .cse2 8))) (< (+ |ULTIMATE.start_main_~b~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|)))))) is different from false [2021-12-14 11:40:36,762 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 5) (forall ((|v_ULTIMATE.start_main_~i~0#1_81| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_81| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_257 Int)) (= (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_81| 8)) v_ArrVal_257) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (* 2 c_~N~0) 1))))) (< 1 c_~N~0) (<= c_~N~0 2) (<= |c_ULTIMATE.start_main_~i~0#1| 1) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~b~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse1 (select |c_#memory_int| |ULTIMATE.start_main_~b~0#1.base|))) (and (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 4) (= (select .cse1 0) 1) (= (select .cse1 8) 1) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (< (+ |ULTIMATE.start_main_~b~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|)))) (= (+ (* 2 c_~N~0) 1) (select .cse0 0)))) is different from false [2021-12-14 11:40:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:40:36,894 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2021-12-14 11:40:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-14 11:40:36,894 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 77 states have internal predecessors, (103), 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 [2021-12-14 11:40:36,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:40:36,895 INFO L225 Difference]: With dead ends: 83 [2021-12-14 11:40:36,895 INFO L226 Difference]: Without dead ends: 81 [2021-12-14 11:40:36,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2460 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=562, Invalid=6227, Unknown=29, NotChecked=492, Total=7310 [2021-12-14 11:40:36,899 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 620 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:40:36,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 233 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 373 Invalid, 0 Unknown, 620 Unchecked, 0.3s Time] [2021-12-14 11:40:36,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-14 11:40:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2021-12-14 11:40:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 71 states have internal predecessors, (83), 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) [2021-12-14 11:40:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2021-12-14 11:40:36,906 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 38 [2021-12-14 11:40:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:40:36,907 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2021-12-14 11:40:36,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 1.3376623376623376) internal successors, (103), 77 states have internal predecessors, (103), 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) [2021-12-14 11:40:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2021-12-14 11:40:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-14 11:40:36,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:40:36,908 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:40:36,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-14 11:40:37,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:40:37,111 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:40:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:40:37,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1666934362, now seen corresponding path program 5 times [2021-12-14 11:40:37,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:40:37,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27383466] [2021-12-14 11:40:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:40:37,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:40:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:40:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-14 11:40:37,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:40:37,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27383466] [2021-12-14 11:40:37,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27383466] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 11:40:37,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835597930] [2021-12-14 11:40:37,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-14 11:40:37,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:40:37,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:40:37,196 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) [2021-12-14 11:40:37,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 11:40:37,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-14 11:40:37,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 11:40:37,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 11:40:37,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 11:40:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-14 11:40:37,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 11:40:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-14 11:40:37,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835597930] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 11:40:37,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 11:40:37,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2021-12-14 11:40:37,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54846105] [2021-12-14 11:40:37,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 11:40:37,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 11:40:37,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:40:37,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 11:40:37,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-12-14 11:40:37,589 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 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) [2021-12-14 11:40:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:40:38,005 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2021-12-14 11:40:38,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-14 11:40:38,006 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 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 [2021-12-14 11:40:38,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:40:38,006 INFO L225 Difference]: With dead ends: 160 [2021-12-14 11:40:38,007 INFO L226 Difference]: Without dead ends: 107 [2021-12-14 11:40:38,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2021-12-14 11:40:38,008 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 237 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:40:38,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 172 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:40:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-14 11:40:38,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2021-12-14 11:40:38,016 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) [2021-12-14 11:40:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2021-12-14 11:40:38,017 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 40 [2021-12-14 11:40:38,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:40:38,017 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2021-12-14 11:40:38,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 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) [2021-12-14 11:40:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2021-12-14 11:40:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-14 11:40:38,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:40:38,018 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:40:38,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 11:40:38,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:40:38,227 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:40:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:40:38,228 INFO L85 PathProgramCache]: Analyzing trace with hash -465930606, now seen corresponding path program 1 times [2021-12-14 11:40:38,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:40:38,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063677479] [2021-12-14 11:40:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:40:38,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:40:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:40:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 11:40:39,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:40:39,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063677479] [2021-12-14 11:40:39,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063677479] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 11:40:39,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089381928] [2021-12-14 11:40:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:40:39,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:40:39,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:40:39,088 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) [2021-12-14 11:40:39,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 11:40:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:40:39,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-14 11:40:39,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 11:40:39,180 INFO L388 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 98 treesize of output 94 [2021-12-14 11:40:39,228 INFO L388 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 [2021-12-14 11:40:39,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:39,306 INFO L388 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 [2021-12-14 11:40:39,380 INFO L388 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 [2021-12-14 11:40:39,408 INFO L388 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 [2021-12-14 11:40:39,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:39,511 INFO L388 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 [2021-12-14 11:40:39,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:39,537 INFO L388 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 [2021-12-14 11:40:39,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:39,584 INFO L388 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 [2021-12-14 11:40:39,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:39,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:39,609 INFO L388 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 [2021-12-14 11:40:39,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:39,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:40:39,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:39,670 INFO L388 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 [2021-12-14 11:40:39,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:39,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:39,760 INFO L388 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 [2021-12-14 11:40:40,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 11:40:40,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 68 treesize of output 40 [2021-12-14 11:40:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-14 11:40:40,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 11:40:51,294 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 11:40:51,294 INFO L388 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 277 treesize of output 226 [2021-12-14 11:40:53,382 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse2 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse5 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|))))) (.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (let ((.cse1 (+ (select (select (store .cse4 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse2 .cse3)))) (let ((.cse0 (select (store .cse2 .cse3 .cse1) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= (mod (+ .cse0 1) (- 2)) 0)) (= .cse1 (+ (* 2 (div (+ (* .cse0 (- 1)) 1) (- 2))) 1)))))))) is different from false [2021-12-14 11:40:55,698 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse2 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse5 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (let ((.cse0 (+ (select (select (store .cse4 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse2 .cse3)))) (let ((.cse1 (select (store .cse2 .cse3 .cse0) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= .cse0 (+ (* 2 (div (+ (* .cse1 (- 1)) 1) (- 2))) 1)) (not (= 0 (mod (+ .cse1 1) (- 2)))))))))) is different from false [2021-12-14 11:40:57,881 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8)) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse2 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse5 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse1 (+ (select .cse2 .cse3) (select (select (store .cse4 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))) (let ((.cse0 (select (store .cse2 .cse3 .cse1) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= (mod (+ .cse0 1) (- 2)) 0)) (= (+ 1 (* 2 (div (+ (* .cse0 (- 1)) 1) (- 2)))) .cse1))))))) is different from false [2021-12-14 11:40:59,941 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_394 (Array Int Int))) (let ((.cse4 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 8) 8) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_394) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_1))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse2 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|))) (store .cse5 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) (select v_arrayElimArr_1 |ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse1 (+ (select .cse2 .cse3) (select (select (store .cse4 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))) (let ((.cse0 (select (store .cse2 .cse3 .cse1) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (+ (* 2 (div (+ (* .cse0 (- 1)) 1) (- 2))) 1) .cse1) (not (= (mod (+ .cse0 1) (- 2)) 0)))))))) is different from false [2021-12-14 11:41:00,024 INFO L354 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2021-12-14 11:41:00,024 INFO L388 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 673 treesize of output 318 [2021-12-14 11:41:00,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2309 treesize of output 2201 [2021-12-14 11:41:00,564 INFO L354 Elim1Store]: treesize reduction 39, result has 68.8 percent of original size [2021-12-14 11:41:00,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3125 treesize of output 2973 [2021-12-14 11:41:00,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:41:00,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:41:00,710 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 11:41:00,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 2432 treesize of output 2118 [2021-12-14 11:41:00,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:41:00,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 11:41:00,827 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 11:41:00,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 1281 treesize of output 1247