./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/condm.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/condm.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 6f961be2104ef3ac444088284f7936b105cc31dfbd8617bc6896bf1b51a5f23d --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:25:44,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:25:44,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:25:44,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:25:44,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:25:44,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:25:44,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:25:44,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:25:44,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:25:44,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:25:44,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:25:44,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:25:44,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:25:44,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:25:44,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:25:44,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:25:44,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:25:44,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:25:44,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:25:44,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:25:44,917 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:25:44,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:25:44,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:25:44,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:25:44,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:25:44,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:25:44,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:25:44,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:25:44,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:25:44,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:25:44,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:25:44,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:25:44,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:25:44,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:25:44,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:25:44,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:25:44,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:25:44,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:25:44,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:25:44,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:25:44,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:25:44,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:25:44,941 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 10:25:44,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:25:44,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:25:44,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:25:44,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:25:44,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:25:44,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:25:44,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:25:44,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:25:44,970 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:25:44,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:25:44,970 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:25:44,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 10:25:44,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:25:44,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:25:44,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:25:44,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:25:44,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:25:44,971 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:25:44,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:25:44,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:25:44,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:25:44,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:25:44,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:25:44,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:25:44,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:25:44,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:25:44,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:25:44,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:25:44,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 10:25:44,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 10:25:44,974 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:25:44,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:25:44,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:25:44,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f961be2104ef3ac444088284f7936b105cc31dfbd8617bc6896bf1b51a5f23d [2022-07-19 10:25:45,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:25:45,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:25:45,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:25:45,278 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:25:45,278 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:25:45,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/condm.c [2022-07-19 10:25:45,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663adc24f/28dcd39fad6b491a96b31df03a3844f4/FLAG0a179ed48 [2022-07-19 10:25:45,695 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:25:45,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/condm.c [2022-07-19 10:25:45,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663adc24f/28dcd39fad6b491a96b31df03a3844f4/FLAG0a179ed48 [2022-07-19 10:25:46,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/663adc24f/28dcd39fad6b491a96b31df03a3844f4 [2022-07-19 10:25:46,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:25:46,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:25:46,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:25:46,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:25:46,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:25:46,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76928860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46, skipping insertion in model container [2022-07-19 10:25:46,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:25:46,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:25:46,341 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/condm.c[588,601] [2022-07-19 10:25:46,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:25:46,373 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:25:46,389 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/condm.c[588,601] [2022-07-19 10:25:46,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:25:46,410 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:25:46,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46 WrapperNode [2022-07-19 10:25:46,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:25:46,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:25:46,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:25:46,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:25:46,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,446 INFO L137 Inliner]: procedures = 16, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2022-07-19 10:25:46,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:25:46,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:25:46,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:25:46,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:25:46,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:25:46,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:25:46,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:25:46,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:25:46,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46" (1/1) ... [2022-07-19 10:25:46,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:25:46,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:25:46,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 10:25:46,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 10:25:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:25:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 10:25:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 10:25:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 10:25:46,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:25:46,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:25:46,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 10:25:46,581 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:25:46,582 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:25:46,715 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:25:46,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:25:46,720 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 10:25:46,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:25:46 BoogieIcfgContainer [2022-07-19 10:25:46,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:25:46,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:25:46,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:25:46,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:25:46,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:25:46" (1/3) ... [2022-07-19 10:25:46,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ffb7268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:25:46, skipping insertion in model container [2022-07-19 10:25:46,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:25:46" (2/3) ... [2022-07-19 10:25:46,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ffb7268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:25:46, skipping insertion in model container [2022-07-19 10:25:46,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:25:46" (3/3) ... [2022-07-19 10:25:46,748 INFO L111 eAbstractionObserver]: Analyzing ICFG condm.c [2022-07-19 10:25:46,759 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:25:46,767 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:25:46,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:25:46,809 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@50c97582, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5fa069c [2022-07-19 10:25:46,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:25:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-19 10:25:46,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:25:46,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:25:46,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:25:46,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:25:46,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1828392228, now seen corresponding path program 1 times [2022-07-19 10:25:46,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:25:46,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209023178] [2022-07-19 10:25:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:25:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:25:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:25:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:46,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:25:46,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209023178] [2022-07-19 10:25:46,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209023178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:25:46,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:25:46,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 10:25:46,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380731973] [2022-07-19 10:25:46,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:25:46,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 10:25:46,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:25:46,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 10:25:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:25:46,984 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:46,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:25:46,999 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2022-07-19 10:25:46,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 10:25:47,000 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-07-19 10:25:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:25:47,007 INFO L225 Difference]: With dead ends: 40 [2022-07-19 10:25:47,007 INFO L226 Difference]: Without dead ends: 18 [2022-07-19 10:25:47,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:25:47,014 INFO L413 NwaCegarLoop]: 26 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, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:25:47,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:25:47,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-19 10:25:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-19 10:25:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:47,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-07-19 10:25:47,037 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2022-07-19 10:25:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:25:47,037 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-07-19 10:25:47,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-07-19 10:25:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-19 10:25:47,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:25:47,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:25:47,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 10:25:47,039 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:25:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:25:47,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1148333858, now seen corresponding path program 1 times [2022-07-19 10:25:47,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:25:47,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820351936] [2022-07-19 10:25:47,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:25:47,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:25:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:25:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:47,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:25:47,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820351936] [2022-07-19 10:25:47,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820351936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:25:47,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:25:47,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 10:25:47,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698565524] [2022-07-19 10:25:47,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:25:47,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 10:25:47,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:25:47,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 10:25:47,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:25:47,147 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:47,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:25:47,205 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2022-07-19 10:25:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 10:25:47,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-07-19 10:25:47,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:25:47,207 INFO L225 Difference]: With dead ends: 40 [2022-07-19 10:25:47,207 INFO L226 Difference]: Without dead ends: 29 [2022-07-19 10:25:47,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:25:47,209 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:25:47,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:25:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-19 10:25:47,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-07-19 10:25:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-07-19 10:25:47,214 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2022-07-19 10:25:47,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:25:47,215 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-07-19 10:25:47,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:47,215 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-07-19 10:25:47,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-19 10:25:47,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:25:47,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:25:47,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 10:25:47,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:25:47,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:25:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2142875084, now seen corresponding path program 1 times [2022-07-19 10:25:47,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:25:47,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236953056] [2022-07-19 10:25:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:25:47,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:25:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:25:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:47,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:25:47,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236953056] [2022-07-19 10:25:47,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236953056] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:25:47,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825858741] [2022-07-19 10:25:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:25:47,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:25:47,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:25:47,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:25:47,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 10:25:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:25:47,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-19 10:25:47,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:25:47,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 10:25:47,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-07-19 10:25:47,958 INFO L390 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 40 treesize of output 28 [2022-07-19 10:25:47,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:47,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:25:48,587 INFO L390 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 18 treesize of output 16 [2022-07-19 10:25:48,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-07-19 10:25:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:48,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825858741] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:25:48,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:25:48,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 19 [2022-07-19 10:25:48,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203121020] [2022-07-19 10:25:48,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:25:48,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 10:25:48,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:25:48,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 10:25:48,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2022-07-19 10:25:48,655 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:49,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:25:49,590 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2022-07-19 10:25:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 10:25:49,591 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 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) Word has length 17 [2022-07-19 10:25:49,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:25:49,592 INFO L225 Difference]: With dead ends: 76 [2022-07-19 10:25:49,592 INFO L226 Difference]: Without dead ends: 66 [2022-07-19 10:25:49,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=308, Invalid=814, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 10:25:49,594 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 293 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 10:25:49,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 80 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 10:25:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-07-19 10:25:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 37. [2022-07-19 10:25:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-07-19 10:25:49,607 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 17 [2022-07-19 10:25:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:25:49,608 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-07-19 10:25:49,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:49,608 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-07-19 10:25:49,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-19 10:25:49,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:25:49,610 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:25:49,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 10:25:49,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:25:49,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:25:49,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:25:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash -596215012, now seen corresponding path program 1 times [2022-07-19 10:25:49,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:25:49,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394826174] [2022-07-19 10:25:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:25:49,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:25:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:25:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:49,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:25:49,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394826174] [2022-07-19 10:25:49,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394826174] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:25:49,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361945109] [2022-07-19 10:25:49,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:25:49,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:25:49,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:25:49,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:25:49,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 10:25:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:25:49,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 10:25:49,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:25:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:49,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:25:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:50,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361945109] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:25:50,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:25:50,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-07-19 10:25:50,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513193112] [2022-07-19 10:25:50,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:25:50,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 10:25:50,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:25:50,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 10:25:50,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-19 10:25:50,016 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:25:50,104 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2022-07-19 10:25:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 10:25:50,104 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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 20 [2022-07-19 10:25:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:25:50,107 INFO L225 Difference]: With dead ends: 72 [2022-07-19 10:25:50,107 INFO L226 Difference]: Without dead ends: 50 [2022-07-19 10:25:50,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-07-19 10:25:50,111 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:25:50,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 51 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:25:50,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-19 10:25:50,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 34. [2022-07-19 10:25:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-07-19 10:25:50,124 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 20 [2022-07-19 10:25:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:25:50,124 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-07-19 10:25:50,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:50,124 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-07-19 10:25:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 10:25:50,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:25:50,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:25:50,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 10:25:50,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-19 10:25:50,344 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:25:50,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:25:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash -408404582, now seen corresponding path program 2 times [2022-07-19 10:25:50,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:25:50,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320158689] [2022-07-19 10:25:50,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:25:50,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:25:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:25:50,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 10:25:50,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:25:50,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320158689] [2022-07-19 10:25:50,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320158689] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:25:50,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452843010] [2022-07-19 10:25:50,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:25:50,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:25:50,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:25:50,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:25:50,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 10:25:50,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:25:50,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:25:50,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 10:25:50,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:25:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 10:25:50,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:25:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 10:25:50,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452843010] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:25:50,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:25:50,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-07-19 10:25:50,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530005268] [2022-07-19 10:25:50,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:25:50,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 10:25:50,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:25:50,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 10:25:50,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-07-19 10:25:50,853 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:51,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:25:51,216 INFO L93 Difference]: Finished difference Result 153 states and 172 transitions. [2022-07-19 10:25:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 10:25:51,217 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 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 22 [2022-07-19 10:25:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:25:51,218 INFO L225 Difference]: With dead ends: 153 [2022-07-19 10:25:51,218 INFO L226 Difference]: Without dead ends: 141 [2022-07-19 10:25:51,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=286, Invalid=584, Unknown=0, NotChecked=0, Total=870 [2022-07-19 10:25:51,220 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 541 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 10:25:51,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 64 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 10:25:51,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-07-19 10:25:51,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 42. [2022-07-19 10:25:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-07-19 10:25:51,230 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 22 [2022-07-19 10:25:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:25:51,231 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-07-19 10:25:51,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-07-19 10:25:51,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 10:25:51,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:25:51,232 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:25:51,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 10:25:51,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:25:51,446 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:25:51,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:25:51,446 INFO L85 PathProgramCache]: Analyzing trace with hash -311207784, now seen corresponding path program 3 times [2022-07-19 10:25:51,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:25:51,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074265281] [2022-07-19 10:25:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:25:51,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:25:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:25:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:51,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:25:51,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074265281] [2022-07-19 10:25:51,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074265281] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:25:51,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361335860] [2022-07-19 10:25:51,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 10:25:51,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:25:51,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:25:51,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:25:51,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 10:25:51,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 10:25:51,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:25:51,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 10:25:51,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:25:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:25:51,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:25:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 10:25:51,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361335860] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:25:51,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:25:51,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 20 [2022-07-19 10:25:51,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20793532] [2022-07-19 10:25:51,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:25:51,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 10:25:51,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:25:51,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 10:25:51,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-07-19 10:25:51,798 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:52,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:25:52,524 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2022-07-19 10:25:52,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 10:25:52,525 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-19 10:25:52,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:25:52,526 INFO L225 Difference]: With dead ends: 112 [2022-07-19 10:25:52,526 INFO L226 Difference]: Without dead ends: 102 [2022-07-19 10:25:52,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2022-07-19 10:25:52,527 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 272 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 10:25:52,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 171 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 10:25:52,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-19 10:25:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 58. [2022-07-19 10:25:52,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 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) [2022-07-19 10:25:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2022-07-19 10:25:52,539 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 24 [2022-07-19 10:25:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:25:52,540 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2022-07-19 10:25:52,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:25:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2022-07-19 10:25:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-19 10:25:52,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:25:52,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:25:52,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 10:25:52,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:25:52,762 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:25:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:25:52,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1394926352, now seen corresponding path program 1 times [2022-07-19 10:25:52,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:25:52,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648119059] [2022-07-19 10:25:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:25:52,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:25:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:25:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:53,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:25:53,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648119059] [2022-07-19 10:25:53,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648119059] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:25:53,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530549425] [2022-07-19 10:25:53,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:25:53,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:25:53,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:25:53,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:25:53,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 10:25:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:25:53,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-19 10:25:53,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:25:53,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 10:25:53,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:25:53,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-19 10:25:53,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:25:53,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:25:53,359 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:25:53,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 41 [2022-07-19 10:25:53,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:25:53,436 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:25:53,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2022-07-19 10:25:53,778 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:25:53,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31 [2022-07-19 10:25:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:53,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:25:55,208 INFO L390 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 182 treesize of output 170 [2022-07-19 10:25:55,214 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-19 10:25:55,214 INFO L390 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 360 treesize of output 342 [2022-07-19 10:25:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:25:55,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530549425] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:25:55,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:25:55,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 40 [2022-07-19 10:25:55,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625723954] [2022-07-19 10:25:55,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:25:55,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-19 10:25:55,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:25:55,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-19 10:25:55,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1281, Unknown=0, NotChecked=0, Total=1560 [2022-07-19 10:25:55,304 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:26:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:26:04,841 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2022-07-19 10:26:04,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-19 10:26:04,841 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-19 10:26:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:26:04,842 INFO L225 Difference]: With dead ends: 136 [2022-07-19 10:26:04,842 INFO L226 Difference]: Without dead ends: 134 [2022-07-19 10:26:04,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2656 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1328, Invalid=7044, Unknown=0, NotChecked=0, Total=8372 [2022-07-19 10:26:04,845 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 507 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 10:26:04,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 258 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 10:26:04,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-19 10:26:04,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 62. [2022-07-19 10:26:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 61 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:26:04,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2022-07-19 10:26:04,856 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 26 [2022-07-19 10:26:04,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:26:04,856 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2022-07-19 10:26:04,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.725) internal successors, (69), 40 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:26:04,856 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2022-07-19 10:26:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-19 10:26:04,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:26:04,857 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:26:04,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 10:26:05,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:26:05,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:26:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:26:05,072 INFO L85 PathProgramCache]: Analyzing trace with hash -562149382, now seen corresponding path program 4 times [2022-07-19 10:26:05,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:26:05,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266066961] [2022-07-19 10:26:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:26:05,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:26:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:26:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:26:06,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:26:06,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266066961] [2022-07-19 10:26:06,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266066961] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:26:06,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828272048] [2022-07-19 10:26:06,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 10:26:06,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:26:06,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:26:06,174 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:26:06,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 10:26:06,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 10:26:06,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:26:06,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-19 10:26:06,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:26:06,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 10:26:06,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:06,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 10:26:06,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:06,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 10:26:06,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:26:06,349 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:26:06,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2022-07-19 10:26:06,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:06,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 10:26:06,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:06,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 10:26:06,528 INFO L390 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 36 treesize of output 24 [2022-07-19 10:26:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:26:06,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:26:21,049 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_145 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (let ((.cse0 (< c_~N~0 0))) (and (forall ((v_ArrVal_147 Int)) (= (+ (- 2) (mod c_~N~0 2)) (+ (mod (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (- 2)))) (or (not .cse0) (= (mod c_~N~0 2) 0) (forall ((v_ArrVal_147 Int)) (< (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))) (or (forall ((v_ArrVal_147 Int)) (let ((.cse1 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (mod .cse1 2) 0) (not (< .cse1 0))))) .cse0))))) is different from false [2022-07-19 10:26:23,268 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_67| Int)) (or (forall ((v_ArrVal_145 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (let ((.cse0 (< c_~N~0 0))) (and (or (forall ((v_ArrVal_147 Int)) (< (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not .cse0) (= (mod c_~N~0 2) 0)) (forall ((v_ArrVal_147 Int)) (= (+ (- 2) (mod c_~N~0 2)) (+ (- 2) (mod (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)))) (or (forall ((v_ArrVal_147 Int)) (let ((.cse1 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (mod .cse1 2) 0) (not (< .cse1 0))))) .cse0))))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_67|)))) is different from false [2022-07-19 10:26:29,995 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_70| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_70|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_67| Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (and (or (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (< (select (store (store (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (<= 0 (+ 1 (div (+ |v_ULTIMATE.start_main_~i~0#1_70| (- 1)) 2)))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (let ((.cse1 (select (store (store (let ((.cse2 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (mod .cse1 2) 0) (not (< .cse1 0))))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (<= 1 (mod (select (store (store (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_67|)))))) is different from false [2022-07-19 10:26:32,295 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_67| Int) (v_ArrVal_140 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int) (|v_ULTIMATE.start_main_~i~0#1_70| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_70|)) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_67|)) (and (or (<= 0 (+ 1 (div (+ |v_ULTIMATE.start_main_~i~0#1_70| (- 1)) 2))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (< (select (store (store (let ((.cse0 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (<= 1 (mod (select (store (store (let ((.cse1 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (let ((.cse2 (select (store (store (let ((.cse3 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< .cse2 0)) (= (mod .cse2 2) 0))))))) is different from false [2022-07-19 10:26:34,942 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_71| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_71|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_67| Int) (v_ArrVal_140 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int) (|v_ULTIMATE.start_main_~i~0#1_70| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_71| 1) |v_ULTIMATE.start_main_~i~0#1_70|)) (and (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (<= 1 (mod (select (store (store (let ((.cse0 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_71| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2))) (or (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (< (select (store (store (let ((.cse1 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_71| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (<= 0 (+ 1 (div (+ |v_ULTIMATE.start_main_~i~0#1_70| (- 1)) 2)))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (let ((.cse2 (select (store (store (let ((.cse3 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_71| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< .cse2 0)) (= (mod .cse2 2) 0))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_67|)))))) is different from false [2022-07-19 10:26:34,975 INFO L390 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 72 treesize of output 68 [2022-07-19 10:26:34,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 788 treesize of output 780 [2022-07-19 10:26:35,085 INFO L390 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 74 treesize of output 70 [2022-07-19 10:26:35,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 896 treesize of output 888 [2022-07-19 10:26:35,354 INFO L390 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 148 treesize of output 140 [2022-07-19 10:26:35,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 823 treesize of output 815 [2022-07-19 10:26:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2022-07-19 10:26:35,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828272048] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:26:35,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:26:35,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 16] total 42 [2022-07-19 10:26:35,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678061368] [2022-07-19 10:26:35,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:26:35,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-19 10:26:35,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:26:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-19 10:26:35,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1119, Unknown=11, NotChecked=370, Total=1722 [2022-07-19 10:26:35,429 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 42 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:26:37,456 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= 1 c_~N~0) (forall ((|v_ULTIMATE.start_main_~i~0#1_71| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_71|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_67| Int) (v_ArrVal_140 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int) (|v_ULTIMATE.start_main_~i~0#1_70| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_71| 1) |v_ULTIMATE.start_main_~i~0#1_70|)) (and (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (<= 1 (mod (select (store (store (let ((.cse0 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_71| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2))) (or (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (< (select (store (store (let ((.cse1 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_71| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse1 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (<= 0 (+ 1 (div (+ |v_ULTIMATE.start_main_~i~0#1_70| (- 1)) 2)))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (let ((.cse2 (select (store (store (let ((.cse3 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_71| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< .cse2 0)) (= (mod .cse2 2) 0))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_67|)))))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) 0)) is different from false [2022-07-19 10:26:39,462 WARN L833 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 0) (<= 1 c_~N~0) (<= (+ (div (* (- 1) |c_ULTIMATE.start_main_~a~0#1.offset|) 4) 1) |c_ULTIMATE.start_main_~i~0#1|) (let ((.cse0 (* 2 (div c_~N~0 2))) (.cse1 (* c_~N~0 2))) (or (< .cse0 c_~N~0) (<= .cse1 (+ .cse0 |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (+ .cse0 3 |c_ULTIMATE.start_main_~i~0#1|) .cse1))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_67| Int) (v_ArrVal_140 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int) (|v_ULTIMATE.start_main_~i~0#1_70| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_70|)) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_67|)) (and (or (<= 0 (+ 1 (div (+ |v_ULTIMATE.start_main_~i~0#1_70| (- 1)) 2))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (< (select (store (store (let ((.cse2 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (<= 1 (mod (select (store (store (let ((.cse3 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (let ((.cse4 (select (store (store (let ((.cse5 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_140) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse5 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< .cse4 0)) (= (mod .cse4 2) 0)))))))) is different from false [2022-07-19 10:26:41,467 WARN L833 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_70| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_70|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_67| Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (and (or (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (< (select (store (store (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (<= 0 (+ 1 (div (+ |v_ULTIMATE.start_main_~i~0#1_70| (- 1)) 2)))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (let ((.cse1 (select (store (store (let ((.cse2 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (mod .cse1 2) 0) (not (< .cse1 0))))) (forall ((v_ArrVal_147 Int) (v_ArrVal_145 Int) (v_ArrVal_142 Int)) (<= 1 (mod (select (store (store (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_70| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_142))) (store .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_67|)))))) (<= 1 c_~N~0) (<= (+ (div (* (- 1) |c_ULTIMATE.start_main_~a~0#1.offset|) 4) 1) |c_ULTIMATE.start_main_~i~0#1|) (let ((.cse4 (* 2 (div c_~N~0 2))) (.cse5 (* c_~N~0 2))) (or (< .cse4 c_~N~0) (<= .cse5 (+ .cse4 |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (+ .cse4 3 |c_ULTIMATE.start_main_~i~0#1|) .cse5))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0)) is different from false [2022-07-19 10:26:43,953 WARN L833 $PredicateComparison]: unable to prove that (and (= (+ (* 2 (div c_~N~0 2)) 1) c_~N~0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) 1) (forall ((|v_ULTIMATE.start_main_~i~0#1_67| Int)) (or (forall ((v_ArrVal_145 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (let ((.cse0 (< c_~N~0 0))) (and (or (forall ((v_ArrVal_147 Int)) (< (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not .cse0) (= (mod c_~N~0 2) 0)) (forall ((v_ArrVal_147 Int)) (= (+ (- 2) (mod c_~N~0 2)) (+ (- 2) (mod (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)))) (or (forall ((v_ArrVal_147 Int)) (let ((.cse1 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (mod .cse1 2) 0) (not (< .cse1 0))))) .cse0))))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_67|)))) (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= 3 c_~N~0) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0)) is different from false [2022-07-19 10:26:45,960 WARN L833 $PredicateComparison]: unable to prove that (and (= (+ (* 2 (div c_~N~0 2)) 1) c_~N~0) (forall ((v_ArrVal_145 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (let ((.cse0 (< c_~N~0 0))) (and (forall ((v_ArrVal_147 Int)) (= (+ (- 2) (mod c_~N~0 2)) (+ (mod (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (- 2)))) (or (not .cse0) (= (mod c_~N~0 2) 0) (forall ((v_ArrVal_147 Int)) (< (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))) (or (forall ((v_ArrVal_147 Int)) (let ((.cse1 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (mod .cse1 2) 0) (not (< .cse1 0))))) .cse0))))) (<= 3 c_~N~0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0)) is different from false [2022-07-19 10:26:48,045 WARN L833 $PredicateComparison]: unable to prove that (and (= (+ (* 2 (div c_~N~0 2)) 1) c_~N~0) (forall ((|v_ULTIMATE.start_main_~i~0#1_67| Int)) (or (forall ((v_ArrVal_145 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (let ((.cse0 (< c_~N~0 0))) (and (or (forall ((v_ArrVal_147 Int)) (< (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not .cse0) (= (mod c_~N~0 2) 0)) (forall ((v_ArrVal_147 Int)) (= (+ (- 2) (mod c_~N~0 2)) (+ (- 2) (mod (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)))) (or (forall ((v_ArrVal_147 Int)) (let ((.cse1 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (mod .cse1 2) 0) (not (< .cse1 0))))) .cse0))))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_67|)))) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (<= 3 c_~N~0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0)) is different from false [2022-07-19 10:26:50,053 WARN L833 $PredicateComparison]: unable to prove that (and (= (+ (* 2 (div c_~N~0 2)) 1) c_~N~0) (forall ((v_ArrVal_145 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (let ((.cse0 (< c_~N~0 0))) (and (forall ((v_ArrVal_147 Int)) (= (+ (- 2) (mod c_~N~0 2)) (+ (mod (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2) (- 2)))) (or (not .cse0) (= (mod c_~N~0 2) 0) (forall ((v_ArrVal_147 Int)) (< (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0))) (or (forall ((v_ArrVal_147 Int)) (let ((.cse1 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_145) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (mod .cse1 2) 0) (not (< .cse1 0))))) .cse0))))) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (<= 3 c_~N~0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0)) is different from false [2022-07-19 10:26:52,096 WARN L833 $PredicateComparison]: unable to prove that (and (= (+ (* 2 (div c_~N~0 2)) 1) c_~N~0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 1) (<= (+ (div (* (- 1) |c_ULTIMATE.start_main_~a~0#1.offset|) 4) 3) c_~N~0) (forall ((|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (let ((.cse0 (< c_~N~0 0))) (and (or (forall ((v_ArrVal_147 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_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not .cse0) (= (mod c_~N~0 2) 0)) (or (forall ((v_ArrVal_147 Int)) (let ((.cse1 (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_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (mod .cse1 2) 0) (not (< .cse1 0))))) .cse0) (forall ((v_ArrVal_147 Int)) (= (+ (- 2) (mod (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_66| 4)) v_ArrVal_147) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) (+ (- 2) (mod c_~N~0 2)))))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_66|)))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0)) is different from false [2022-07-19 10:26:52,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:26:52,512 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2022-07-19 10:26:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-19 10:26:52,513 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 42 states have internal predecessors, (72), 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 27 [2022-07-19 10:26:52,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:26:52,513 INFO L225 Difference]: With dead ends: 141 [2022-07-19 10:26:52,513 INFO L226 Difference]: Without dead ends: 117 [2022-07-19 10:26:52,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=571, Invalid=3002, Unknown=19, NotChecked=1664, Total=5256 [2022-07-19 10:26:52,515 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 141 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 417 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 10:26:52,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 227 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 331 Invalid, 0 Unknown, 417 Unchecked, 0.2s Time] [2022-07-19 10:26:52,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-19 10:26:52,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 72. [2022-07-19 10:26:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:26:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2022-07-19 10:26:52,529 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 27 [2022-07-19 10:26:52,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:26:52,529 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2022-07-19 10:26:52,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 42 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:26:52,530 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2022-07-19 10:26:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 10:26:52,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:26:52,531 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:26:52,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 10:26:52,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:26:52,740 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:26:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:26:52,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1446324666, now seen corresponding path program 2 times [2022-07-19 10:26:52,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:26:52,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325947662] [2022-07-19 10:26:52,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:26:52,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:26:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:26:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 10:26:52,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:26:52,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325947662] [2022-07-19 10:26:52,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325947662] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:26:52,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765427480] [2022-07-19 10:26:52,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:26:52,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:26:52,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:26:52,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:26:52,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 10:26:52,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:26:52,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:26:52,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 10:26:52,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:26:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 10:26:52,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:26:52,957 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 10:26:52,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765427480] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:26:52,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:26:52,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-07-19 10:26:52,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343318974] [2022-07-19 10:26:52,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:26:52,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 10:26:52,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:26:52,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 10:26:52,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-07-19 10:26:52,959 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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) [2022-07-19 10:26:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:26:53,060 INFO L93 Difference]: Finished difference Result 125 states and 137 transitions. [2022-07-19 10:26:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 10:26:53,060 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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 [2022-07-19 10:26:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:26:53,061 INFO L225 Difference]: With dead ends: 125 [2022-07-19 10:26:53,061 INFO L226 Difference]: Without dead ends: 91 [2022-07-19 10:26:53,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-07-19 10:26:53,062 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:26:53,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 65 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:26:53,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-19 10:26:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2022-07-19 10:26:53,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 70 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:26:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2022-07-19 10:26:53,077 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 30 [2022-07-19 10:26:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:26:53,077 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2022-07-19 10:26:53,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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) [2022-07-19 10:26:53,078 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2022-07-19 10:26:53,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-19 10:26:53,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:26:53,079 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:26:53,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 10:26:53,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:26:53,295 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:26:53,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:26:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1857271344, now seen corresponding path program 1 times [2022-07-19 10:26:53,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:26:53,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901190911] [2022-07-19 10:26:53,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:26:53,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:26:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:26:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:26:54,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:26:54,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901190911] [2022-07-19 10:26:54,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901190911] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:26:54,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573638162] [2022-07-19 10:26:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:26:54,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:26:54,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:26:54,400 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 10:26:54,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 10:26:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:26:54,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-19 10:26:54,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:26:54,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 10:26:54,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:54,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-07-19 10:26:54,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:54,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:54,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:54,585 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:26:54,586 INFO L390 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 1 case distinctions, treesize of input 32 treesize of output 34 [2022-07-19 10:26:54,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:26:54,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:54,650 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:26:54,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 41 [2022-07-19 10:26:54,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:54,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:26:54,719 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:26:54,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 43 [2022-07-19 10:26:54,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:54,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:54,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:26:54,790 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:26:54,790 INFO L390 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 1 case distinctions, treesize of input 36 treesize of output 38 [2022-07-19 10:26:55,135 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 10:26:55,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 56 [2022-07-19 10:26:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:26:55,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:26:58,321 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_94| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_94|)) (and (forall ((v_ArrVal_207 Int)) (let ((.cse4 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse0 (select .cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (let ((.cse1 (mod .cse0 2))) (or (and (< .cse0 0) (not (= .cse1 0))) (let ((.cse2 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse3 (mod .cse2 2))) (and (or (<= 0 .cse2) (= .cse3 0)) (= .cse1 .cse3))))))))) (forall ((v_ArrVal_207 Int)) (let ((.cse6 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse7 (select .cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (let ((.cse5 (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (< .cse5 0) (not (= (mod .cse5 2) 0)))) (= (mod .cse7 2) 0) (not (< .cse7 0))))))))) is different from false [2022-07-19 10:27:55,470 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_94| Int)) (or (not (<= (+ 2 |c_ULTIMATE.start_main_~i~0#1|) |v_ULTIMATE.start_main_~i~0#1_94|)) (and (forall ((v_ArrVal_207 Int)) (let ((.cse2 (store (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse4 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (store .cse3 .cse4 (+ (select .cse3 .cse4) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse0 (select .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (mod .cse0 2) 0) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (< .cse1 0) (not (= (mod .cse1 2) 0)))) (not (< .cse0 0)))))) (forall ((v_ArrVal_207 Int)) (let ((.cse9 (store (let ((.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse11 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (store .cse10 .cse11 (+ (select .cse10 .cse11) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse6 (select .cse9 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (let ((.cse5 (mod .cse6 2))) (or (and (not (= .cse5 0)) (< .cse6 0)) (let ((.cse8 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse7 (mod .cse8 2))) (and (= .cse7 .cse5) (or (<= 0 .cse8) (= .cse7 0))))))))))))) is different from false [2022-07-19 10:28:31,081 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_98| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_98|)) (forall ((v_ArrVal_201 Int) (|v_ULTIMATE.start_main_~i~0#1_94| Int)) (or (and (forall ((v_ArrVal_207 Int)) (let ((.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse3 (store (let ((.cse6 (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_98| 4)) v_ArrVal_201))) (store (store .cse6 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse5 (+ (select .cse6 .cse5) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse4 (select .cse3 .cse5))) (let ((.cse0 (mod .cse4 2))) (or (let ((.cse2 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse1 (mod .cse2 2))) (and (= .cse0 .cse1) (or (<= 0 .cse2) (= .cse1 0))))) (and (not (= .cse0 0)) (< .cse4 0)))))))) (forall ((v_ArrVal_207 Int)) (let ((.cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse9 (store (let ((.cse11 (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_98| 4)) v_ArrVal_201))) (store (store .cse11 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse11 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse10 (+ (select .cse11 .cse10) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse7 (select .cse9 .cse10))) (or (not (< .cse7 0)) (= (mod .cse7 2) 0) (let ((.cse8 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (< .cse8 0) (not (= (mod .cse8 2) 0)))))))))) (not (<= 2 |v_ULTIMATE.start_main_~i~0#1_94|)))))) is different from false [2022-07-19 10:28:40,543 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_98| Int) (|v_ULTIMATE.start_main_~i~0#1_94| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_98|)) (not (<= 2 |v_ULTIMATE.start_main_~i~0#1_94|)) (and (forall ((v_ArrVal_201 Int) (v_ArrVal_207 Int)) (let ((.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse2 (store (let ((.cse4 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_201))) (store (store .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse3 (+ (select .cse4 .cse3) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse0 (select .cse2 .cse3))) (or (not (< .cse0 0)) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (not (= (mod .cse1 2) 0)) (< .cse1 0))) (= (mod .cse0 2) 0)))))) (forall ((v_ArrVal_201 Int) (v_ArrVal_207 Int)) (let ((.cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse9 (store (let ((.cse11 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_201))) (store (store .cse11 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse11 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse10 (+ (select .cse11 .cse10) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse6 (select .cse9 .cse10))) (let ((.cse5 (mod .cse6 2))) (or (and (not (= .cse5 0)) (< .cse6 0)) (let ((.cse8 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse7 (mod .cse8 2))) (and (= .cse7 .cse5) (or (= .cse7 0) (<= 0 .cse8)))))))))))))) is different from false [2022-07-19 10:29:21,537 INFO L390 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 628 treesize of output 592 [2022-07-19 10:29:21,562 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-19 10:29:21,562 INFO L390 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 6018 treesize of output 5882 [2022-07-19 10:29:43,955 INFO L390 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 420 treesize of output 396 [2022-07-19 10:29:43,967 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-19 10:29:43,968 INFO L390 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 1924 treesize of output 1 [2022-07-19 10:29:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-07-19 10:29:44,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573638162] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:29:44,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:29:44,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 55 [2022-07-19 10:29:44,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103490528] [2022-07-19 10:29:44,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:29:44,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-07-19 10:29:44,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:29:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-07-19 10:29:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=2233, Unknown=48, NotChecked=404, Total=2970 [2022-07-19 10:29:44,094 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 55 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 55 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:29:46,315 WARN L833 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) 0) 0) (<= 1 c_~N~0) (forall ((|v_ULTIMATE.start_main_~i~0#1_98| Int) (|v_ULTIMATE.start_main_~i~0#1_94| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_98|)) (not (<= 2 |v_ULTIMATE.start_main_~i~0#1_94|)) (and (forall ((v_ArrVal_201 Int) (v_ArrVal_207 Int)) (let ((.cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse2 (store (let ((.cse4 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_201))) (store (store .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse3 (+ (select .cse4 .cse3) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse0 (select .cse2 .cse3))) (or (not (< .cse0 0)) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (not (= (mod .cse1 2) 0)) (< .cse1 0))) (= (mod .cse0 2) 0)))))) (forall ((v_ArrVal_201 Int) (v_ArrVal_207 Int)) (let ((.cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse9 (store (let ((.cse11 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_201))) (store (store .cse11 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse11 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse10 (+ (select .cse11 .cse10) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse6 (select .cse9 .cse10))) (let ((.cse5 (mod .cse6 2))) (or (and (not (= .cse5 0)) (< .cse6 0)) (let ((.cse8 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse7 (mod .cse8 2))) (and (= .cse7 .cse5) (or (= .cse7 0) (<= 0 .cse8)))))))))))))) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~i~0#1| 1)) is different from false [2022-07-19 10:29:48,323 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= (select .cse0 0) 0) (<= 1 c_~N~0) (forall ((|v_ULTIMATE.start_main_~i~0#1_98| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_98|)) (forall ((v_ArrVal_201 Int) (|v_ULTIMATE.start_main_~i~0#1_94| Int)) (or (and (forall ((v_ArrVal_207 Int)) (let ((.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse4 (store (let ((.cse7 (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_98| 4)) v_ArrVal_201))) (store (store .cse7 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse6 (+ (select .cse7 .cse6) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse5 (select .cse4 .cse6))) (let ((.cse1 (mod .cse5 2))) (or (let ((.cse3 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse2 (mod .cse3 2))) (and (= .cse1 .cse2) (or (<= 0 .cse3) (= .cse2 0))))) (and (not (= .cse1 0)) (< .cse5 0)))))))) (forall ((v_ArrVal_207 Int)) (let ((.cse11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse10 (store (let ((.cse12 (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_98| 4)) v_ArrVal_201))) (store (store .cse12 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse11 (+ (select .cse12 .cse11) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse8 (select .cse10 .cse11))) (or (not (< .cse8 0)) (= (mod .cse8 2) 0) (let ((.cse9 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (< .cse9 0) (not (= (mod .cse9 2) 0)))))))))) (not (<= 2 |v_ULTIMATE.start_main_~i~0#1_94|)))))) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (select .cse0 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) 0) (<= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from false [2022-07-19 10:29:52,653 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= (select .cse0 0) 0) (or (= (select .cse0 (+ (* c_~N~0 4) |c_ULTIMATE.start_main_~a~0#1.offset| (- 8))) 0) (< 3 c_~N~0)) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_98| Int) (|v_ULTIMATE.start_main_~i~0#1_94| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_98|)) (not (<= 2 |v_ULTIMATE.start_main_~i~0#1_94|)) (and (forall ((v_ArrVal_201 Int) (v_ArrVal_207 Int)) (let ((.cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse3 (store (let ((.cse5 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_201))) (store (store .cse5 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse5 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse4 (+ (select .cse5 .cse4) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse1 (select .cse3 .cse4))) (or (not (< .cse1 0)) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (not (= (mod .cse2 2) 0)) (< .cse2 0))) (= (mod .cse1 2) 0)))))) (forall ((v_ArrVal_201 Int) (v_ArrVal_207 Int)) (let ((.cse11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse10 (store (let ((.cse12 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) 0) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_201))) (store (store .cse12 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse11 (+ (select .cse12 .cse11) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse7 (select .cse10 .cse11))) (let ((.cse6 (mod .cse7 2))) (or (and (not (= .cse6 0)) (< .cse7 0)) (let ((.cse9 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse8 (mod .cse9 2))) (and (= .cse8 .cse6) (or (= .cse8 0) (<= 0 .cse9)))))))))))))) (<= 3 c_~N~0) (or (< 2 |c_ULTIMATE.start_main_~i~0#1|) (and (<= 1 c_~N~0) (= (select .cse0 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) (- 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) 0))) (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0) (= 0 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0))) is different from false [2022-07-19 10:29:54,787 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (= (select .cse0 0) 0) (or (= (select .cse0 (+ (* c_~N~0 4) |c_ULTIMATE.start_main_~a~0#1.offset| (- 8))) 0) (< 3 c_~N~0)) (<= 3 c_~N~0) (forall ((|v_ULTIMATE.start_main_~i~0#1_98| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_98|)) (forall ((v_ArrVal_201 Int) (|v_ULTIMATE.start_main_~i~0#1_94| Int)) (or (and (forall ((v_ArrVal_207 Int)) (let ((.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse4 (store (let ((.cse7 (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_98| 4)) v_ArrVal_201))) (store (store .cse7 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse6 (+ (select .cse7 .cse6) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse5 (select .cse4 .cse6))) (let ((.cse1 (mod .cse5 2))) (or (let ((.cse3 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse2 (mod .cse3 2))) (and (= .cse1 .cse2) (or (<= 0 .cse3) (= .cse2 0))))) (and (not (= .cse1 0)) (< .cse5 0)))))))) (forall ((v_ArrVal_207 Int)) (let ((.cse11 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse10 (store (let ((.cse12 (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_98| 4)) v_ArrVal_201))) (store (store .cse12 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) .cse11 (+ (select .cse12 .cse11) 1))) (+ (* |v_ULTIMATE.start_main_~i~0#1_94| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_207))) (let ((.cse8 (select .cse10 .cse11))) (or (not (< .cse8 0)) (= (mod .cse8 2) 0) (let ((.cse9 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (< .cse9 0) (not (= (mod .cse9 2) 0)))))))))) (not (<= 2 |v_ULTIMATE.start_main_~i~0#1_94|)))))) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0))) is different from false