./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array6_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array6_pattern.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 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 10:28:22,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 10:28:22,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 10:28:22,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 10:28:22,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 10:28:22,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 10:28:22,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 10:28:22,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 10:28:22,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 10:28:22,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 10:28:22,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 10:28:22,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 10:28:22,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 10:28:22,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 10:28:22,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 10:28:22,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 10:28:22,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 10:28:22,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 10:28:22,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 10:28:22,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 10:28:22,952 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 10:28:22,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 10:28:22,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 10:28:22,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 10:28:22,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 10:28:22,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 10:28:22,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 10:28:22,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 10:28:22,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 10:28:22,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 10:28:22,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 10:28:22,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 10:28:22,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 10:28:22,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 10:28:22,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 10:28:22,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 10:28:22,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 10:28:22,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 10:28:22,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 10:28:22,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 10:28:22,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 10:28:22,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 10:28:22,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 10:28:22,994 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 10:28:22,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 10:28:22,994 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 10:28:22,995 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 10:28:22,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 10:28:22,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 10:28:22,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 10:28:22,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 10:28:22,996 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 10:28:22,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 10:28:22,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 10:28:22,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 10:28:22,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 10:28:22,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 10:28:22,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 10:28:22,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 10:28:22,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 10:28:22,998 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 10:28:22,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 10:28:22,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 10:28:22,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 10:28:23,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 10:28:23,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 10:28:23,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 10:28:23,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 10:28:23,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 10:28:23,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 10:28:23,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 10:28:23,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 10:28:23,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 10:28:23,002 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 10:28:23,002 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 10:28:23,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 10:28:23,002 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 [2022-07-22 10:28:23,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 10:28:23,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 10:28:23,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 10:28:23,195 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 10:28:23,197 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 10:28:23,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array6_pattern.c [2022-07-22 10:28:23,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ed4fc53/5814f26cd2d1425faed3a1d5145fa4a7/FLAGe60dadb9b [2022-07-22 10:28:23,586 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 10:28:23,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array6_pattern.c [2022-07-22 10:28:23,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ed4fc53/5814f26cd2d1425faed3a1d5145fa4a7/FLAGe60dadb9b [2022-07-22 10:28:24,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ed4fc53/5814f26cd2d1425faed3a1d5145fa4a7 [2022-07-22 10:28:24,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 10:28:24,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 10:28:24,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 10:28:24,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 10:28:24,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 10:28:24,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3cc1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24, skipping insertion in model container [2022-07-22 10:28:24,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 10:28:24,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 10:28:24,238 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-patterns/array6_pattern.c[1356,1369] [2022-07-22 10:28:24,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 10:28:24,271 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 10:28:24,281 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-patterns/array6_pattern.c[1356,1369] [2022-07-22 10:28:24,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 10:28:24,307 INFO L208 MainTranslator]: Completed translation [2022-07-22 10:28:24,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24 WrapperNode [2022-07-22 10:28:24,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 10:28:24,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 10:28:24,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 10:28:24,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 10:28:24,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,341 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-07-22 10:28:24,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 10:28:24,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 10:28:24,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 10:28:24,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 10:28:24,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 10:28:24,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 10:28:24,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 10:28:24,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 10:28:24,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24" (1/1) ... [2022-07-22 10:28:24,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 10:28:24,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:28:24,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 10:28:24,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 10:28:24,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 10:28:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 10:28:24,431 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 10:28:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 10:28:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 10:28:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 10:28:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 10:28:24,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 10:28:24,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 10:28:24,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 10:28:24,476 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 10:28:24,477 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 10:28:24,591 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 10:28:24,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 10:28:24,595 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 10:28:24,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:28:24 BoogieIcfgContainer [2022-07-22 10:28:24,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 10:28:24,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 10:28:24,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 10:28:24,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 10:28:24,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:28:24" (1/3) ... [2022-07-22 10:28:24,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be80709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:28:24, skipping insertion in model container [2022-07-22 10:28:24,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:28:24" (2/3) ... [2022-07-22 10:28:24,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be80709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:28:24, skipping insertion in model container [2022-07-22 10:28:24,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:28:24" (3/3) ... [2022-07-22 10:28:24,601 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2022-07-22 10:28:24,620 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 10:28:24,620 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 10:28:24,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 10:28:24,671 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@28a9136a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60bd7cbe [2022-07-22 10:28:24,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 10:28:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:24,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-22 10:28:24,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:28:24,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:28:24,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:28:24,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:28:24,687 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2022-07-22 10:28:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:28:24,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796825194] [2022-07-22 10:28:24,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:28:24,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:28:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:28:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 10:28:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:28:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:28:24,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:28:24,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796825194] [2022-07-22 10:28:24,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796825194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:28:24,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:28:24,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 10:28:24,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359184115] [2022-07-22 10:28:24,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:28:24,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 10:28:24,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:28:24,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 10:28:24,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 10:28:24,809 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 10:28:24,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:28:24,820 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-07-22 10:28:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 10:28:24,821 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-22 10:28:24,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:28:24,825 INFO L225 Difference]: With dead ends: 47 [2022-07-22 10:28:24,825 INFO L226 Difference]: Without dead ends: 21 [2022-07-22 10:28:24,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 10:28:24,829 INFO L413 NwaCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:28:24,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:28:24,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-22 10:28:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-22 10:28:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-07-22 10:28:24,863 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-07-22 10:28:24,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:28:24,863 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-22 10:28:24,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 10:28:24,864 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-07-22 10:28:24,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-22 10:28:24,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:28:24,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:28:24,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 10:28:24,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:28:24,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:28:24,866 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2022-07-22 10:28:24,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:28:24,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344858549] [2022-07-22 10:28:24,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:28:24,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:28:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:28:24,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 10:28:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:28:25,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 10:28:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:28:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:28:25,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:28:25,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344858549] [2022-07-22 10:28:25,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344858549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:28:25,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:28:25,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 10:28:25,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41565555] [2022-07-22 10:28:25,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:28:25,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 10:28:25,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:28:25,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 10:28:25,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 10:28:25,026 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:28:25,049 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-07-22 10:28:25,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 10:28:25,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-07-22 10:28:25,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:28:25,051 INFO L225 Difference]: With dead ends: 26 [2022-07-22 10:28:25,051 INFO L226 Difference]: Without dead ends: 22 [2022-07-22 10:28:25,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 10:28:25,052 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:28:25,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:28:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-22 10:28:25,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-22 10:28:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-22 10:28:25,058 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2022-07-22 10:28:25,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:28:25,059 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-22 10:28:25,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-22 10:28:25,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 10:28:25,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:28:25,061 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:28:25,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 10:28:25,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:28:25,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:28:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2022-07-22 10:28:25,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:28:25,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767848743] [2022-07-22 10:28:25,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:28:25,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:28:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:28:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 10:28:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:28:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 10:28:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:28:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:28:25,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:28:25,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767848743] [2022-07-22 10:28:25,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767848743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:28:25,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:28:25,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 10:28:25,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774180695] [2022-07-22 10:28:25,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:28:25,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 10:28:25,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:28:25,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 10:28:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 10:28:25,191 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:28:25,225 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-07-22 10:28:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 10:28:25,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-07-22 10:28:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:28:25,226 INFO L225 Difference]: With dead ends: 41 [2022-07-22 10:28:25,226 INFO L226 Difference]: Without dead ends: 25 [2022-07-22 10:28:25,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 10:28:25,228 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:28:25,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 55 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:28:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-22 10:28:25,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-07-22 10:28:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-22 10:28:25,236 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2022-07-22 10:28:25,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:28:25,236 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-22 10:28:25,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:25,237 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-22 10:28:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-22 10:28:25,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:28:25,238 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:28:25,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 10:28:25,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:28:25,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:28:25,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2022-07-22 10:28:25,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:28:25,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624754351] [2022-07-22 10:28:25,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:28:25,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:28:25,257 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:28:25,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647719141] [2022-07-22 10:28:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:28:25,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:28:25,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:28:25,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:28:25,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 10:28:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:28:25,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 10:28:25,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:28:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 10:28:25,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:28:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 10:28:25,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:28:25,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624754351] [2022-07-22 10:28:25,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:28:25,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647719141] [2022-07-22 10:28:25,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647719141] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:28:25,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:28:25,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-22 10:28:25,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85834213] [2022-07-22 10:28:25,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:28:25,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 10:28:25,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:28:25,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 10:28:25,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-22 10:28:25,459 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 10:28:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:28:25,673 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-07-22 10:28:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 10:28:25,674 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2022-07-22 10:28:25,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:28:25,677 INFO L225 Difference]: With dead ends: 71 [2022-07-22 10:28:25,677 INFO L226 Difference]: Without dead ends: 43 [2022-07-22 10:28:25,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-07-22 10:28:25,685 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:28:25,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 86 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:28:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-22 10:28:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2022-07-22 10:28:25,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:25,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-07-22 10:28:25,699 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 26 [2022-07-22 10:28:25,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:28:25,699 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-07-22 10:28:25,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 10:28:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-07-22 10:28:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 10:28:25,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:28:25,701 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:28:25,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 10:28:25,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:28:25,916 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:28:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:28:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1559224519, now seen corresponding path program 2 times [2022-07-22 10:28:25,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:28:25,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127018159] [2022-07-22 10:28:25,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:28:25,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:28:25,938 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:28:25,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704135764] [2022-07-22 10:28:25,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:28:25,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:28:25,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:28:25,940 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:28:25,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 10:28:26,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:28:26,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:28:26,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 10:28:26,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:28:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:28:26,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:28:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:28:26,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:28:26,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127018159] [2022-07-22 10:28:26,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:28:26,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704135764] [2022-07-22 10:28:26,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704135764] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:28:26,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:28:26,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-07-22 10:28:26,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356431309] [2022-07-22 10:28:26,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:28:26,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 10:28:26,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:28:26,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 10:28:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-22 10:28:26,132 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 10:28:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:28:26,235 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-07-22 10:28:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 10:28:26,235 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-07-22 10:28:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:28:26,237 INFO L225 Difference]: With dead ends: 39 [2022-07-22 10:28:26,237 INFO L226 Difference]: Without dead ends: 35 [2022-07-22 10:28:26,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-07-22 10:28:26,238 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:28:26,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 95 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:28:26,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-22 10:28:26,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-22 10:28:26,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-07-22 10:28:26,248 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2022-07-22 10:28:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:28:26,248 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-07-22 10:28:26,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 10:28:26,249 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-07-22 10:28:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 10:28:26,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:28:26,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:28:26,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 10:28:26,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:28:26,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:28:26,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:28:26,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 3 times [2022-07-22 10:28:26,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:28:26,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99743939] [2022-07-22 10:28:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:28:26,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:28:26,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:28:26,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801322314] [2022-07-22 10:28:26,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 10:28:26,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:28:26,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:28:26,484 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:28:26,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 10:28:26,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-22 10:28:26,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:28:26,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-22 10:28:26,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:28:26,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 10:28:26,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:26,670 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-22 10:28:26,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-07-22 10:28:26,682 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 33 treesize of output 32 [2022-07-22 10:28:26,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:26,757 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2022-07-22 10:28:26,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:26,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2022-07-22 10:28:26,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:26,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:26,773 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-07-22 10:28:26,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:26,868 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2022-07-22 10:28:26,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:26,893 INFO L356 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2022-07-22 10:28:26,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 34 [2022-07-22 10:28:26,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:26,911 INFO L356 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2022-07-22 10:28:26,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2022-07-22 10:28:27,378 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-22 10:28:27,379 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 334 treesize of output 217 [2022-07-22 10:28:27,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-07-22 10:28:27,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-22 10:28:27,442 INFO L356 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-07-22 10:28:27,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 176 treesize of output 219 [2022-07-22 10:28:27,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,476 INFO L356 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-07-22 10:28:27,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 160 [2022-07-22 10:28:27,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:27,525 INFO L356 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2022-07-22 10:28:27,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 82 [2022-07-22 10:28:27,588 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-22 10:28:27,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 240 treesize of output 205 [2022-07-22 10:28:27,655 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 28 treesize of output 17 [2022-07-22 10:28:27,668 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 17 treesize of output 11 [2022-07-22 10:28:38,505 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 10:28:38,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 183 treesize of output 143 [2022-07-22 10:28:38,742 INFO L356 Elim1Store]: treesize reduction 86, result has 71.2 percent of original size [2022-07-22 10:28:38,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 25 case distinctions, treesize of input 139 treesize of output 315 [2022-07-22 10:28:38,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:38,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:38,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:38,990 INFO L356 Elim1Store]: treesize reduction 37, result has 85.5 percent of original size [2022-07-22 10:28:38,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 219 treesize of output 376 [2022-07-22 10:28:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:28:56,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:29:02,635 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_218 (Array Int Int)) (|v_ULTIMATE.start_main_~count~0#1_34| Int) (v_ArrVal_213 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~count~0#1_34| 2)) (= (let ((.cse4 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse2 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_218) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_213) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse5 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4)) (select .cse5 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4 4))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4) (+ (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4 4)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse4)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse1 (* |v_ULTIMATE.start_main_~count~0#1_34| 4))) (+ (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|)) (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse2 (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))))) 0) (< (+ |v_ULTIMATE.start_main_~count~0#1_34| 1) c_~ARR_SIZE~0))) is different from false [2022-07-22 10:29:02,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:29:02,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99743939] [2022-07-22 10:29:02,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:29:02,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801322314] [2022-07-22 10:29:02,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801322314] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:29:02,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:29:02,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-07-22 10:29:02,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416514677] [2022-07-22 10:29:02,774 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:29:02,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 10:29:02,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:29:02,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 10:29:02,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=778, Unknown=9, NotChecked=58, Total=992 [2022-07-22 10:29:02,775 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:29:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:29:03,028 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-07-22 10:29:03,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 10:29:03,028 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-22 10:29:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:29:03,029 INFO L225 Difference]: With dead ends: 59 [2022-07-22 10:29:03,029 INFO L226 Difference]: Without dead ends: 55 [2022-07-22 10:29:03,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=176, Invalid=1009, Unknown=9, NotChecked=66, Total=1260 [2022-07-22 10:29:03,030 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:29:03,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 204 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 0 Unknown, 108 Unchecked, 0.1s Time] [2022-07-22 10:29:03,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-22 10:29:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2022-07-22 10:29:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 10:29:03,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-07-22 10:29:03,036 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 34 [2022-07-22 10:29:03,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:29:03,036 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-07-22 10:29:03,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 20 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:29:03,036 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-07-22 10:29:03,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 10:29:03,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:29:03,037 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:29:03,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 10:29:03,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:29:03,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:29:03,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:29:03,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1565541619, now seen corresponding path program 4 times [2022-07-22 10:29:03,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:29:03,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433621805] [2022-07-22 10:29:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:29:03,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:29:03,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:29:03,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036296843] [2022-07-22 10:29:03,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 10:29:03,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:29:03,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:29:03,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:29:03,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 10:29:03,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 10:29:03,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:29:03,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 10:29:03,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:29:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:29:03,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:29:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:29:03,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:29:03,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433621805] [2022-07-22 10:29:03,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:29:03,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036296843] [2022-07-22 10:29:03,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036296843] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:29:03,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:29:03,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-22 10:29:03,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598655131] [2022-07-22 10:29:03,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:29:03,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 10:29:03,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:29:03,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 10:29:03,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-22 10:29:03,527 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:29:03,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:29:03,665 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2022-07-22 10:29:03,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 10:29:03,666 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-07-22 10:29:03,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:29:03,669 INFO L225 Difference]: With dead ends: 87 [2022-07-22 10:29:03,669 INFO L226 Difference]: Without dead ends: 73 [2022-07-22 10:29:03,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-07-22 10:29:03,670 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 88 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:29:03,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 100 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:29:03,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-22 10:29:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2022-07-22 10:29:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 states have internal predecessors, (57), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 10:29:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2022-07-22 10:29:03,690 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 36 [2022-07-22 10:29:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:29:03,690 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2022-07-22 10:29:03,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:29:03,691 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2022-07-22 10:29:03,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 10:29:03,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:29:03,695 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:29:03,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 10:29:03,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:29:03,913 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:29:03,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:29:03,914 INFO L85 PathProgramCache]: Analyzing trace with hash -956776499, now seen corresponding path program 5 times [2022-07-22 10:29:03,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:29:03,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760670124] [2022-07-22 10:29:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:29:03,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:29:03,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:29:03,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024760100] [2022-07-22 10:29:03,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 10:29:03,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:29:03,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:29:03,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:29:03,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 10:29:04,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-22 10:29:04,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:29:04,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 10:29:04,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:29:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:29:04,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:29:04,193 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:29:04,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:29:04,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760670124] [2022-07-22 10:29:04,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:29:04,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024760100] [2022-07-22 10:29:04,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024760100] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:29:04,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:29:04,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-22 10:29:04,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564200] [2022-07-22 10:29:04,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:29:04,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 10:29:04,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:29:04,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 10:29:04,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-22 10:29:04,194 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:29:04,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:29:04,365 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2022-07-22 10:29:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 10:29:04,366 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-07-22 10:29:04,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:29:04,366 INFO L225 Difference]: With dead ends: 72 [2022-07-22 10:29:04,366 INFO L226 Difference]: Without dead ends: 68 [2022-07-22 10:29:04,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-07-22 10:29:04,367 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 41 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:29:04,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 149 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:29:04,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-22 10:29:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2022-07-22 10:29:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 10:29:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-07-22 10:29:04,373 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 36 [2022-07-22 10:29:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:29:04,374 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-07-22 10:29:04,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:29:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-07-22 10:29:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 10:29:04,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:29:04,375 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:29:04,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 10:29:04,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:29:04,587 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:29:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:29:04,588 INFO L85 PathProgramCache]: Analyzing trace with hash -285980785, now seen corresponding path program 6 times [2022-07-22 10:29:04,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:29:04,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133635491] [2022-07-22 10:29:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:29:04,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:29:04,597 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:29:04,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726036844] [2022-07-22 10:29:04,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 10:29:04,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:29:04,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:29:04,607 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:29:04,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 10:29:04,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-07-22 10:29:04,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:29:04,815 WARN L261 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-22 10:29:04,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:29:04,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 10:29:04,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:04,851 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-22 10:29:04,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2022-07-22 10:29:04,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-07-22 10:29:04,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-07-22 10:29:04,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:04,929 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-07-22 10:29:04,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:04,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2022-07-22 10:29:04,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:04,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:04,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2022-07-22 10:29:05,024 INFO L356 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-07-22 10:29:05,025 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 88 [2022-07-22 10:29:05,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 45 [2022-07-22 10:29:05,043 INFO L356 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2022-07-22 10:29:05,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 75 [2022-07-22 10:29:05,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2022-07-22 10:29:05,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 40 [2022-07-22 10:29:05,102 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 22 treesize of output 11 [2022-07-22 10:29:05,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-07-22 10:29:05,192 INFO L356 Elim1Store]: treesize reduction 40, result has 11.1 percent of original size [2022-07-22 10:29:05,192 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 191 treesize of output 138 [2022-07-22 10:29:05,213 INFO L356 Elim1Store]: treesize reduction 64, result has 7.2 percent of original size [2022-07-22 10:29:05,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 143 [2022-07-22 10:29:05,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 94 [2022-07-22 10:29:05,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 90 [2022-07-22 10:29:05,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2022-07-22 10:29:05,253 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 15 treesize of output 11 [2022-07-22 10:29:05,777 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-22 10:29:05,777 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 419 treesize of output 280 [2022-07-22 10:29:05,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-07-22 10:29:05,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-22 10:29:05,865 INFO L356 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-07-22 10:29:05,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 275 treesize of output 298 [2022-07-22 10:29:05,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:05,988 INFO L356 Elim1Store]: treesize reduction 166, result has 21.7 percent of original size [2022-07-22 10:29:05,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 89 treesize of output 136 [2022-07-22 10:29:05,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:06,086 INFO L356 Elim1Store]: treesize reduction 307, result has 13.0 percent of original size [2022-07-22 10:29:06,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 195 treesize of output 248 [2022-07-22 10:29:06,196 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 17 treesize of output 11 [2022-07-22 10:29:06,202 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 46 treesize of output 32 [2022-07-22 10:29:08,184 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 10:29:08,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 336 treesize of output 254 [2022-07-22 10:29:08,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:08,451 INFO L356 Elim1Store]: treesize reduction 62, result has 79.0 percent of original size [2022-07-22 10:29:08,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 11 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 25 case distinctions, treesize of input 259 treesize of output 433 [2022-07-22 10:29:08,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:08,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:08,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:08,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:08,628 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 10:29:08,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 14 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 22 case distinctions, treesize of input 328 treesize of output 502 [2022-07-22 10:29:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:29:36,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:30:04,355 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_457 (Array Int Int)) (|v_ULTIMATE.start_main_~count~0#1_75| Int) (v_ArrVal_455 (Array Int Int))) (or (not (<= |v_ULTIMATE.start_main_~count~0#1_75| 3)) (= (let ((.cse4 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse2 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_455) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse5 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4)) (select .cse5 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse4 4))))))) (let ((.cse1 (* |v_ULTIMATE.start_main_~count~0#1_75| 4)) (.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4) (+ (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse4 4)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse4)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse1)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse1)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)))))) 0) (< (+ |v_ULTIMATE.start_main_~count~0#1_75| 1) c_~ARR_SIZE~0))) is different from false [2022-07-22 10:30:04,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:30:04,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133635491] [2022-07-22 10:30:04,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:30:04,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726036844] [2022-07-22 10:30:04,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726036844] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:30:04,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:30:04,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-22 10:30:04,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499860254] [2022-07-22 10:30:04,535 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:30:04,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 10:30:04,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:30:04,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 10:30:04,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=938, Unknown=15, NotChecked=64, Total=1190 [2022-07-22 10:30:04,556 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:30:05,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:30:05,129 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-07-22 10:30:05,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 10:30:05,130 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-22 10:30:05,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:30:05,131 INFO L225 Difference]: With dead ends: 91 [2022-07-22 10:30:05,131 INFO L226 Difference]: Without dead ends: 87 [2022-07-22 10:30:05,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=222, Invalid=1249, Unknown=15, NotChecked=74, Total=1560 [2022-07-22 10:30:05,132 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 10:30:05,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 216 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 221 Invalid, 0 Unknown, 119 Unchecked, 0.3s Time] [2022-07-22 10:30:05,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-22 10:30:05,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2022-07-22 10:30:05,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 states have internal predecessors, (72), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 10:30:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2022-07-22 10:30:05,145 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 38 [2022-07-22 10:30:05,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:30:05,146 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2022-07-22 10:30:05,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 21 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:30:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2022-07-22 10:30:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-22 10:30:05,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:30:05,149 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:30:05,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 10:30:05,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:30:05,353 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:30:05,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:30:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash 103605969, now seen corresponding path program 7 times [2022-07-22 10:30:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:30:05,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504328372] [2022-07-22 10:30:05,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:30:05,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:30:05,363 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:30:05,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034010394] [2022-07-22 10:30:05,363 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 10:30:05,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:30:05,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:30:05,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:30:05,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 10:30:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:30:05,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 10:30:05,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:30:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:30:05,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:30:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:30:05,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:30:05,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504328372] [2022-07-22 10:30:05,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:30:05,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034010394] [2022-07-22 10:30:05,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034010394] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:30:05,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:30:05,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-07-22 10:30:05,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457272500] [2022-07-22 10:30:05,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:30:05,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 10:30:05,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:30:05,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 10:30:05,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-07-22 10:30:05,624 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:30:05,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:30:05,862 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2022-07-22 10:30:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 10:30:05,862 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-07-22 10:30:05,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:30:05,863 INFO L225 Difference]: With dead ends: 123 [2022-07-22 10:30:05,863 INFO L226 Difference]: Without dead ends: 107 [2022-07-22 10:30:05,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2022-07-22 10:30:05,864 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 97 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:30:05,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 145 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:30:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-22 10:30:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84. [2022-07-22 10:30:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 71 states have internal predecessors, (78), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 10:30:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2022-07-22 10:30:05,875 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 40 [2022-07-22 10:30:05,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:30:05,896 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2022-07-22 10:30:05,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:30:05,896 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2022-07-22 10:30:05,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-22 10:30:05,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:30:05,898 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:30:05,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 10:30:06,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:30:06,099 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:30:06,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:30:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1011334033, now seen corresponding path program 8 times [2022-07-22 10:30:06,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:30:06,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139261251] [2022-07-22 10:30:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:30:06,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:30:06,109 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:30:06,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464604686] [2022-07-22 10:30:06,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:30:06,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:30:06,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:30:06,111 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) [2022-07-22 10:30:06,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 10:30:06,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:30:06,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:30:06,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 10:30:06,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:30:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:30:06,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:30:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:30:06,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:30:06,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139261251] [2022-07-22 10:30:06,360 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:30:06,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464604686] [2022-07-22 10:30:06,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464604686] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:30:06,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:30:06,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-07-22 10:30:06,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119404714] [2022-07-22 10:30:06,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:30:06,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 10:30:06,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:30:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 10:30:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-07-22 10:30:06,362 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:30:06,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:30:06,595 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2022-07-22 10:30:06,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 10:30:06,595 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2022-07-22 10:30:06,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:30:06,596 INFO L225 Difference]: With dead ends: 106 [2022-07-22 10:30:06,596 INFO L226 Difference]: Without dead ends: 102 [2022-07-22 10:30:06,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2022-07-22 10:30:06,597 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 76 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:30:06,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 155 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:30:06,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-22 10:30:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2022-07-22 10:30:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 10:30:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2022-07-22 10:30:06,616 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 40 [2022-07-22 10:30:06,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:30:06,616 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2022-07-22 10:30:06,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:30:06,616 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2022-07-22 10:30:06,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 10:30:06,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:30:06,618 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:30:06,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-22 10:30:06,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 10:30:06,835 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:30:06,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:30:06,835 INFO L85 PathProgramCache]: Analyzing trace with hash -943992564, now seen corresponding path program 1 times [2022-07-22 10:30:06,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:30:06,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87870047] [2022-07-22 10:30:06,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:30:06,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:30:06,845 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:30:06,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384391306] [2022-07-22 10:30:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:30:06,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:30:06,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:30:06,848 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:30:06,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 10:30:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:30:07,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 94 conjunts are in the unsatisfiable core [2022-07-22 10:30:07,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:30:07,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 10:30:07,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,104 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-22 10:30:07,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-07-22 10:30:07,123 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 33 treesize of output 32 [2022-07-22 10:30:07,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2022-07-22 10:30:07,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:07,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:07,237 INFO L356 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2022-07-22 10:30:07,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 86 treesize of output 81 [2022-07-22 10:30:07,556 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-22 10:30:07,556 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 112 [2022-07-22 10:30:07,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 41 [2022-07-22 10:30:07,586 INFO L356 Elim1Store]: treesize reduction 50, result has 16.7 percent of original size [2022-07-22 10:30:07,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 106 [2022-07-22 10:30:07,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,597 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:07,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 49 [2022-07-22 10:30:07,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:07,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:07,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:07,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:07,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-07-22 10:30:07,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 80 [2022-07-22 10:30:07,648 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 17 treesize of output 11 [2022-07-22 10:30:08,131 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-22 10:30:08,131 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 370 treesize of output 247 [2022-07-22 10:30:08,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-07-22 10:30:08,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-22 10:30:08,186 INFO L356 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-07-22 10:30:08,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 174 treesize of output 217 [2022-07-22 10:30:08,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:08,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:08,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:08,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 51 [2022-07-22 10:30:08,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:08,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,230 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:08,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 124 [2022-07-22 10:30:08,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 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 66 treesize of output 62 [2022-07-22 10:30:08,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-07-22 10:30:08,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,321 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:08,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 47 [2022-07-22 10:30:08,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:08,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:08,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:08,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:08,917 INFO L356 Elim1Store]: treesize reduction 48, result has 12.7 percent of original size [2022-07-22 10:30:08,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 189 treesize of output 119 [2022-07-22 10:30:08,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:08,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:08,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 62 [2022-07-22 10:30:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:30:08,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:30:09,357 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_733 (Array Int Int)) (v_ArrVal_732 (Array Int Int))) (= (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse1 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_732) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_733) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse4 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3)) (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3 4))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse3)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) 2 (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)))))) 2)) is different from false [2022-07-22 10:30:16,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:30:16,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87870047] [2022-07-22 10:30:16,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:30:16,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384391306] [2022-07-22 10:30:16,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384391306] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:30:16,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:30:16,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-07-22 10:30:16,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489736049] [2022-07-22 10:30:16,480 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:30:16,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 10:30:16,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:30:16,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 10:30:16,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=873, Unknown=8, NotChecked=60, Total=1056 [2022-07-22 10:30:16,481 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 10:30:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:30:16,885 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-07-22 10:30:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 10:30:16,885 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2022-07-22 10:30:16,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:30:16,886 INFO L225 Difference]: With dead ends: 108 [2022-07-22 10:30:16,886 INFO L226 Difference]: Without dead ends: 96 [2022-07-22 10:30:16,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=140, Invalid=1116, Unknown=8, NotChecked=68, Total=1332 [2022-07-22 10:30:16,886 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 10:30:16,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 308 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 124 Invalid, 0 Unknown, 214 Unchecked, 0.2s Time] [2022-07-22 10:30:16,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-07-22 10:30:16,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2022-07-22 10:30:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 79 states have internal predecessors, (86), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-22 10:30:16,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2022-07-22 10:30:16,897 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 42 [2022-07-22 10:30:16,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:30:16,897 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2022-07-22 10:30:16,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 21 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 10:30:16,898 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2022-07-22 10:30:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 10:30:16,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:30:16,898 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:30:16,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 10:30:17,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:30:17,116 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:30:17,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:30:17,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1282630227, now seen corresponding path program 9 times [2022-07-22 10:30:17,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:30:17,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29783048] [2022-07-22 10:30:17,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:30:17,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:30:17,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:30:17,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669461216] [2022-07-22 10:30:17,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 10:30:17,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:30:17,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:30:17,135 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:30:17,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 10:30:17,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-07-22 10:30:17,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:30:17,433 WARN L261 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 108 conjunts are in the unsatisfiable core [2022-07-22 10:30:17,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:30:17,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 10:30:17,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,461 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-22 10:30:17,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-07-22 10:30:17,468 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 33 treesize of output 32 [2022-07-22 10:30:17,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,539 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 67 [2022-07-22 10:30:17,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2022-07-22 10:30:17,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-22 10:30:17,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2022-07-22 10:30:17,646 INFO L356 Elim1Store]: treesize reduction 32, result has 13.5 percent of original size [2022-07-22 10:30:17,646 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 101 treesize of output 82 [2022-07-22 10:30:17,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 41 [2022-07-22 10:30:17,665 INFO L356 Elim1Store]: treesize reduction 49, result has 9.3 percent of original size [2022-07-22 10:30:17,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 71 [2022-07-22 10:30:17,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 34 [2022-07-22 10:30:17,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-07-22 10:30:17,713 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 20 treesize of output 9 [2022-07-22 10:30:17,716 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 9 treesize of output 5 [2022-07-22 10:30:17,801 INFO L356 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-07-22 10:30:17,801 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 108 [2022-07-22 10:30:17,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 45 [2022-07-22 10:30:17,839 INFO L356 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2022-07-22 10:30:17,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 84 [2022-07-22 10:30:17,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,891 INFO L356 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2022-07-22 10:30:17,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 56 [2022-07-22 10:30:17,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,939 INFO L356 Elim1Store]: treesize reduction 90, result has 22.4 percent of original size [2022-07-22 10:30:17,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 50 [2022-07-22 10:30:17,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:17,950 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 71 [2022-07-22 10:30:17,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:17,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:17,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:17,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:17,963 INFO L356 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-07-22 10:30:17,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 71 treesize of output 36 [2022-07-22 10:30:18,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-07-22 10:30:18,255 INFO L356 Elim1Store]: treesize reduction 30, result has 14.3 percent of original size [2022-07-22 10:30:18,255 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 122 [2022-07-22 10:30:18,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 45 [2022-07-22 10:30:18,279 INFO L356 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2022-07-22 10:30:18,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 92 [2022-07-22 10:30:18,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:18,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:18,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:18,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:18,331 INFO L356 Elim1Store]: treesize reduction 127, result has 17.0 percent of original size [2022-07-22 10:30:18,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 63 [2022-07-22 10:30:18,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:18,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:18,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:18,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:18,382 INFO L356 Elim1Store]: treesize reduction 133, result has 16.4 percent of original size [2022-07-22 10:30:18,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 67 [2022-07-22 10:30:18,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-07-22 10:30:19,349 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-22 10:30:19,350 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 393 treesize of output 266 [2022-07-22 10:30:19,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-07-22 10:30:19,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-22 10:30:19,446 INFO L356 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-07-22 10:30:19,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 212 treesize of output 249 [2022-07-22 10:30:19,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,575 INFO L356 Elim1Store]: treesize reduction 220, result has 19.4 percent of original size [2022-07-22 10:30:19,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 69 treesize of output 125 [2022-07-22 10:30:19,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:19,734 INFO L356 Elim1Store]: treesize reduction 373, result has 12.4 percent of original size [2022-07-22 10:30:19,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 122 treesize of output 227 [2022-07-22 10:30:19,871 INFO L356 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-07-22 10:30:19,872 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 2 case distinctions, treesize of input 190 treesize of output 165 [2022-07-22 10:30:31,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 769 treesize of output 615 [2022-07-22 10:30:31,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:31,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:35,971 INFO L356 Elim1Store]: treesize reduction 171, result has 90.2 percent of original size [2022-07-22 10:30:35,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 10 disjoint index pairs (out of 171 index pairs), introduced 17 new quantified variables, introduced 150 case distinctions, treesize of input 742 treesize of output 2183 [2022-07-22 10:30:36,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:36,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:30:36,291 INFO L244 Elim1Store]: Index analysis took 253 ms [2022-07-22 10:30:39,980 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 10:30:39,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 19 disjoint index pairs (out of 171 index pairs), introduced 17 new quantified variables, introduced 141 case distinctions, treesize of input 1361 treesize of output 2543 [2022-07-22 10:30:40,072 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 576 treesize of output 572 [2022-07-22 10:30:40,174 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 572 treesize of output 566 [2022-07-22 10:30:40,263 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 566 treesize of output 564 [2022-07-22 10:30:40,351 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 564 treesize of output 562 [2022-07-22 10:30:40,439 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 562 treesize of output 560 [2022-07-22 10:30:40,528 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 560 treesize of output 558