./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ss4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ss4.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 cb671fec0d42514b04873418e954f5a2df95ef7f393045434a478c03667a31d2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 13:06:15,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 13:06:15,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 13:06:15,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 13:06:15,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 13:06:15,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 13:06:15,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 13:06:15,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 13:06:15,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 13:06:15,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 13:06:15,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 13:06:15,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 13:06:15,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 13:06:15,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 13:06:15,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 13:06:15,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 13:06:15,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 13:06:15,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 13:06:15,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 13:06:15,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 13:06:15,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 13:06:15,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 13:06:15,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 13:06:15,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 13:06:15,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 13:06:15,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 13:06:15,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 13:06:15,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 13:06:15,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 13:06:16,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 13:06:16,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 13:06:16,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 13:06:16,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 13:06:16,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 13:06:16,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 13:06:16,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 13:06:16,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 13:06:16,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 13:06:16,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 13:06:16,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 13:06:16,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 13:06:16,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 13:06:16,024 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 13:06:16,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 13:06:16,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 13:06:16,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 13:06:16,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 13:06:16,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 13:06:16,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 13:06:16,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 13:06:16,027 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 13:06:16,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 13:06:16,027 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 13:06:16,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 13:06:16,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 13:06:16,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 13:06:16,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 13:06:16,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 13:06:16,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 13:06:16,028 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 13:06:16,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 13:06:16,028 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 13:06:16,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 13:06:16,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 13:06:16,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 13:06:16,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 13:06:16,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:06:16,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 13:06:16,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 13:06:16,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 13:06:16,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 13:06:16,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 13:06:16,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 13:06:16,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 13:06:16,030 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 13:06:16,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 13:06:16,031 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 13:06:16,031 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb671fec0d42514b04873418e954f5a2df95ef7f393045434a478c03667a31d2 [2023-02-18 13:06:16,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 13:06:16,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 13:06:16,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 13:06:16,235 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 13:06:16,235 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 13:06:16,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ss4.c [2023-02-18 13:06:17,222 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 13:06:17,399 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 13:06:17,400 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss4.c [2023-02-18 13:06:17,405 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87bcbb6e/6842215d6d3440fcbe272d19b35b3821/FLAGb056568a7 [2023-02-18 13:06:17,420 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a87bcbb6e/6842215d6d3440fcbe272d19b35b3821 [2023-02-18 13:06:17,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 13:06:17,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 13:06:17,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 13:06:17,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 13:06:17,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 13:06:17,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e537b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17, skipping insertion in model container [2023-02-18 13:06:17,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 13:06:17,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 13:06:17,547 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss4.c[586,599] [2023-02-18 13:06:17,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:06:17,564 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 13:06:17,572 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ss4.c[586,599] [2023-02-18 13:06:17,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 13:06:17,588 INFO L208 MainTranslator]: Completed translation [2023-02-18 13:06:17,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17 WrapperNode [2023-02-18 13:06:17,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 13:06:17,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 13:06:17,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 13:06:17,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 13:06:17,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,609 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-02-18 13:06:17,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 13:06:17,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 13:06:17,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 13:06:17,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 13:06:17,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,631 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 13:06:17,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 13:06:17,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 13:06:17,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 13:06:17,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (1/1) ... [2023-02-18 13:06:17,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 13:06:17,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:06:17,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 13:06:17,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 13:06:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 13:06:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 13:06:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 13:06:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 13:06:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 13:06:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 13:06:17,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 13:06:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 13:06:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 13:06:17,742 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 13:06:17,743 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 13:06:17,845 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 13:06:17,848 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 13:06:17,849 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-18 13:06:17,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:06:17 BoogieIcfgContainer [2023-02-18 13:06:17,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 13:06:17,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 13:06:17,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 13:06:17,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 13:06:17,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 01:06:17" (1/3) ... [2023-02-18 13:06:17,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca9eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:06:17, skipping insertion in model container [2023-02-18 13:06:17,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:06:17" (2/3) ... [2023-02-18 13:06:17,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca9eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:06:17, skipping insertion in model container [2023-02-18 13:06:17,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:06:17" (3/3) ... [2023-02-18 13:06:17,855 INFO L112 eAbstractionObserver]: Analyzing ICFG ss4.c [2023-02-18 13:06:17,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 13:06:17,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 13:06:17,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 13:06:17,898 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d2acd4f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 13:06:17,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 13:06:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 13:06:17,904 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:06:17,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:06:17,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:06:17,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:06:17,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2023-02-18 13:06:17,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:06:17,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821586430] [2023-02-18 13:06:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:06:17,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:06:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:06:18,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:06:18,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821586430] [2023-02-18 13:06:18,018 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 13:06:18,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891920125] [2023-02-18 13:06:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:06:18,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:06:18,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:06:18,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 13:06:18,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 13:06:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:06:18,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 13:06:18,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:06:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:06:18,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 13:06:18,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891920125] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:06:18,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:06:18,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 13:06:18,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989891128] [2023-02-18 13:06:18,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:06:18,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 13:06:18,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:06:18,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 13:06:18,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 13:06:18,173 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:18,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:06:18,183 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2023-02-18 13:06:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 13:06:18,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-18 13:06:18,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:06:18,188 INFO L225 Difference]: With dead ends: 44 [2023-02-18 13:06:18,189 INFO L226 Difference]: Without dead ends: 20 [2023-02-18 13:06:18,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 13:06:18,192 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 [2023-02-18 13:06:18,193 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] [2023-02-18 13:06:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-18 13:06:18,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-18 13:06:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-18 13:06:18,225 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2023-02-18 13:06:18,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:06:18,226 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-18 13:06:18,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:18,226 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-18 13:06:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 13:06:18,226 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:06:18,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:06:18,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 13:06:18,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-18 13:06:18,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:06:18,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:06:18,433 INFO L85 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2023-02-18 13:06:18,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:06:18,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875887311] [2023-02-18 13:06:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:06:18,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:06:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:06:18,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:06:18,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875887311] [2023-02-18 13:06:18,497 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 13:06:18,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376131281] [2023-02-18 13:06:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:06:18,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:06:18,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:06:18,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 13:06:18,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 13:06:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:06:18,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 13:06:18,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:06:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:06:18,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 13:06:18,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376131281] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 13:06:18,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 13:06:18,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 13:06:18,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371521084] [2023-02-18 13:06:18,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 13:06:18,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 13:06:18,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:06:18,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 13:06:18,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 13:06:18,573 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:06:18,608 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2023-02-18 13:06:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 13:06:18,608 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-18 13:06:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:06:18,609 INFO L225 Difference]: With dead ends: 41 [2023-02-18 13:06:18,609 INFO L226 Difference]: Without dead ends: 28 [2023-02-18 13:06:18,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 13:06:18,610 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 30 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 13:06:18,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 12 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 13:06:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-18 13:06:18,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-02-18 13:06:18,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-18 13:06:18,614 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2023-02-18 13:06:18,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:06:18,615 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-18 13:06:18,615 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-18 13:06:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 13:06:18,615 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:06:18,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:06:18,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 13:06:18,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-18 13:06:18,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:06:18,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:06:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2023-02-18 13:06:18,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:06:18,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054757115] [2023-02-18 13:06:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:06:18,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:06:18,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 13:06:18,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868908038] [2023-02-18 13:06:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:06:18,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:06:18,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:06:18,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 13:06:18,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 13:06:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:06:18,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-18 13:06:18,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:06:18,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 13:06:18,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 13:06:18,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-18 13:06:19,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 27 [2023-02-18 13:06:19,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 29 [2023-02-18 13:06:19,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2023-02-18 13:06:19,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 31 [2023-02-18 13:06:19,182 INFO L350 Elim1Store]: Elim1 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 65 treesize of output 37 [2023-02-18 13:06:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:06:19,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:06:21,499 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:06:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:06:21,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:06:21,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054757115] [2023-02-18 13:06:21,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 13:06:21,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868908038] [2023-02-18 13:06:21,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868908038] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:06:21,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:06:21,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-02-18 13:06:21,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319554098] [2023-02-18 13:06:21,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:06:21,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-18 13:06:21,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:06:21,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-18 13:06:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=539, Unknown=1, NotChecked=0, Total=650 [2023-02-18 13:06:21,527 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:22,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:06:22,196 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2023-02-18 13:06:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-18 13:06:22,196 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-18 13:06:22,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:06:22,197 INFO L225 Difference]: With dead ends: 49 [2023-02-18 13:06:22,197 INFO L226 Difference]: Without dead ends: 45 [2023-02-18 13:06:22,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=222, Invalid=1109, Unknown=1, NotChecked=0, Total=1332 [2023-02-18 13:06:22,199 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 48 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 13:06:22,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 61 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 13:06:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-18 13:06:22,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2023-02-18 13:06:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2023-02-18 13:06:22,204 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 23 [2023-02-18 13:06:22,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:06:22,205 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2023-02-18 13:06:22,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:22,205 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2023-02-18 13:06:22,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 13:06:22,206 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:06:22,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:06:22,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 13:06:22,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:06:22,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:06:22,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:06:22,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1774307726, now seen corresponding path program 2 times [2023-02-18 13:06:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:06:22,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507862036] [2023-02-18 13:06:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:06:22,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:06:22,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 13:06:22,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975629001] [2023-02-18 13:06:22,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 13:06:22,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:06:22,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:06:22,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 13:06:22,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 13:06:22,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 13:06:22,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:06:22,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 13:06:22,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:06:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 13:06:22,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:06:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 13:06:22,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:06:22,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507862036] [2023-02-18 13:06:22,561 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 13:06:22,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975629001] [2023-02-18 13:06:22,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975629001] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:06:22,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:06:22,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-18 13:06:22,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379743695] [2023-02-18 13:06:22,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:06:22,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 13:06:22,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:06:22,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 13:06:22,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-18 13:06:22,562 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:06:22,668 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2023-02-18 13:06:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 13:06:22,673 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-18 13:06:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:06:22,676 INFO L225 Difference]: With dead ends: 79 [2023-02-18 13:06:22,676 INFO L226 Difference]: Without dead ends: 53 [2023-02-18 13:06:22,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-18 13:06:22,679 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 46 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 13:06:22,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 30 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 13:06:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-18 13:06:22,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 38. [2023-02-18 13:06:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-02-18 13:06:22,693 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2023-02-18 13:06:22,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:06:22,693 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-02-18 13:06:22,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:22,693 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-02-18 13:06:22,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 13:06:22,694 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:06:22,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:06:22,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 13:06:22,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:06:22,899 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:06:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:06:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash 119582130, now seen corresponding path program 3 times [2023-02-18 13:06:22,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:06:22,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939457443] [2023-02-18 13:06:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:06:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:06:22,924 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 13:06:22,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281815134] [2023-02-18 13:06:22,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 13:06:22,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:06:22,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:06:22,930 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) [2023-02-18 13:06:22,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 13:06:22,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-18 13:06:22,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:06:22,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 13:06:22,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:06:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 13:06:23,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:06:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 13:06:23,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:06:23,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939457443] [2023-02-18 13:06:23,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 13:06:23,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281815134] [2023-02-18 13:06:23,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281815134] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:06:23,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:06:23,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-18 13:06:23,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089184652] [2023-02-18 13:06:23,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:06:23,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 13:06:23,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:06:23,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 13:06:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-18 13:06:23,021 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:23,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:06:23,091 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2023-02-18 13:06:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 13:06:23,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-18 13:06:23,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:06:23,092 INFO L225 Difference]: With dead ends: 47 [2023-02-18 13:06:23,092 INFO L226 Difference]: Without dead ends: 35 [2023-02-18 13:06:23,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-18 13:06:23,093 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 53 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 13:06:23,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 17 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 13:06:23,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-18 13:06:23,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-18 13:06:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-02-18 13:06:23,097 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 25 [2023-02-18 13:06:23,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:06:23,097 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-02-18 13:06:23,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:23,097 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-02-18 13:06:23,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 13:06:23,098 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:06:23,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:06:23,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 13:06:23,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:06:23,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:06:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:06:23,304 INFO L85 PathProgramCache]: Analyzing trace with hash 666081912, now seen corresponding path program 4 times [2023-02-18 13:06:23,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:06:23,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434023828] [2023-02-18 13:06:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:06:23,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:06:23,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 13:06:23,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437036586] [2023-02-18 13:06:23,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 13:06:23,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:06:23,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:06:23,321 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) [2023-02-18 13:06:23,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 13:06:23,433 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 13:06:23,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:06:23,435 WARN L261 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 81 conjunts are in the unsatisfiable core [2023-02-18 13:06:23,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:06:23,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 13:06:23,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 13:06:23,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-18 13:06:23,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2023-02-18 13:06:23,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 13:06:23,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 88 [2023-02-18 13:06:23,566 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:06:23,566 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:06:23,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 65 [2023-02-18 13:06:23,650 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:06:23,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 45 [2023-02-18 13:06:23,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:06:23,706 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:06:23,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 53 [2023-02-18 13:06:23,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2023-02-18 13:06:23,835 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:06:23,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 53 [2023-02-18 13:06:23,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:06:23,917 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:06:23,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 57 [2023-02-18 13:06:23,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 52 [2023-02-18 13:06:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:06:23,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:06:27,474 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:06:27,475 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:06:27,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:06:27,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 13:06:27,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 80 [2023-02-18 13:06:27,482 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:06:27,482 INFO L350 Elim1Store]: Elim1 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 80 treesize of output 74 [2023-02-18 13:06:27,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:06:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:06:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:06:27,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434023828] [2023-02-18 13:06:27,491 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 13:06:27,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437036586] [2023-02-18 13:06:27,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437036586] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:06:27,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:06:27,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 49 [2023-02-18 13:06:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014632313] [2023-02-18 13:06:27,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:06:27,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-02-18 13:06:27,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:06:27,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-02-18 13:06:27,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2028, Unknown=0, NotChecked=0, Total=2352 [2023-02-18 13:06:27,494 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 49 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:06:29,675 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse91 (+ 1 |c_ULTIMATE.start_main_~i~0#1|)) (.cse89 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse90 (+ 1 0)) (.cse54 (< .cse89 c_~N~0)) (.cse30 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse42 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (.cse25 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse26 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse91)))) (let ((.cse27 (select .cse25 .cse26)) (.cse21 (< (+ .cse91 1) c_~N~0)) (.cse43 (select .cse25 .cse42)) (.cse53 (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) (.cse16 (store .cse25 .cse42 1)) (.cse28 (select .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse0 (not .cse54)) (.cse1 (< (+ .cse90 1) c_~N~0)) (.cse19 (< (+ .cse89 1) c_~N~0)) (.cse20 (not (< .cse90 c_~N~0))) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse90))) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 0))) (.cse17 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse89))) (.cse18 (* c_~N~0 (+ 1 c_~N~0)))) (and (or .cse0 .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int)) (let ((.cse14 (+ |v_ULTIMATE.start_main_~i~0#1_69| 1))) (or (not (>= |v_ULTIMATE.start_main_~i~0#1_69| 0)) (= (let ((.cse3 (let ((.cse15 (store .cse16 .cse17 1))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse15))) (let ((.cse12 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse10 (let ((.cse13 (+ (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_69|)))))) (+ .cse13 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse13)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse14))))))) (let ((.cse7 (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse10)))) (store .cse7 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse9 (select .cse7 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse8 (store .cse9 .cse6 (+ (select .cse9 .cse6) .cse10)))) (store .cse8 .cse5 (+ (select .cse9 .cse5) (select (select (store .cse7 |c_ULTIMATE.start_main_~a~0#1.base| .cse8) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))))))))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (+ 0 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (+ .cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) .cse18) (not (< .cse14 c_~N~0)) (< (+ .cse14 1) c_~N~0)))) .cse19 .cse20) (or .cse20 .cse21 (= (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse25 .cse26 (+ .cse27 .cse28))))) (let ((.cse24 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse22 (+ 0 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (+ .cse22 (select (select (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse24 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse22)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) .cse18)) (or .cse20 (= (let ((.cse29 (+ 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (+ .cse29 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse29)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) .cse18)) (or .cse0 .cse1 (= (let ((.cse32 (let ((.cse37 (+ .cse28 (select .cse25 .cse17)))) (let ((.cse34 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse37)))) (store .cse34 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse36 (select .cse34 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse35 (store .cse36 .cse6 (+ (select .cse36 .cse6) .cse37)))) (store .cse35 .cse5 (+ (select .cse36 .cse5) (select (select (store .cse34 |c_ULTIMATE.start_main_~a~0#1.base| .cse35) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))) (let ((.cse33 (select .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse31 (+ 0 (select (select (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (+ .cse31 (select (select (store .cse32 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse31)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) .cse18) .cse19 .cse20) (or (= (let ((.cse39 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse41 (store .cse25 .cse42 (+ .cse43 .cse28)))) (store .cse41 .cse26 (+ .cse27 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse41) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse40 (select .cse39 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse38 (+ 0 (select (select (store .cse39 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (+ .cse38 (select (select (store .cse39 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse38)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) .cse18) .cse20 .cse21) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int)) (let ((.cse44 (+ |v_ULTIMATE.start_main_~i~0#1_69| 1))) (or (not (>= |v_ULTIMATE.start_main_~i~0#1_69| 0)) (not (< .cse44 c_~N~0)) (= (let ((.cse46 (let ((.cse51 (let ((.cse52 (+ .cse28 (select .cse25 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_69|)))))) (+ .cse52 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse52)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse44))))))) (let ((.cse48 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse51)))) (store .cse48 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse50 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse49 (store .cse50 .cse6 (+ (select .cse50 .cse6) .cse51)))) (store .cse49 .cse5 (+ (select .cse50 .cse5) (select (select (store .cse48 |c_ULTIMATE.start_main_~a~0#1.base| .cse49) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))) (let ((.cse47 (select .cse46 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse45 (+ 0 (select (select (store .cse46 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse47 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (+ .cse45 (select (select (store .cse46 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse47 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse45)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) .cse18) (< (+ .cse44 1) c_~N~0)))) .cse1 .cse20) (or .cse53 .cse54 .cse1 .cse20 (= (let ((.cse56 (let ((.cse61 (+ .cse28 .cse43))) (let ((.cse58 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse30 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse61)))) (store .cse58 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse60 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse59 (store .cse60 .cse6 (+ (select .cse60 .cse6) .cse61)))) (store .cse59 .cse5 (+ (select .cse60 .cse5) (select (select (store .cse58 |c_ULTIMATE.start_main_~a~0#1.base| .cse59) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))) (let ((.cse57 (select .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse55 (+ 0 (select (select (store .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (+ .cse55 (select (select (store .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse55)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) .cse18)) (or .cse53 .cse54 .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int)) (let ((.cse62 (+ |v_ULTIMATE.start_main_~i~0#1_69| 1))) (or (not (>= |v_ULTIMATE.start_main_~i~0#1_69| 0)) (not (< .cse62 c_~N~0)) (= (let ((.cse64 (let ((.cse70 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse16))) (let ((.cse71 (select .cse70 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse69 (let ((.cse72 (+ (select .cse71 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse16 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_69|)))))) (+ .cse72 (select (select (store .cse70 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse71 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse72)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse62))))))) (let ((.cse66 (store .cse70 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse71 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse69)))) (store .cse66 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse68 (select .cse66 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse67 (store .cse68 .cse6 (+ (select .cse68 .cse6) .cse69)))) (store .cse67 .cse5 (+ (select .cse68 .cse5) (select (select (store .cse66 |c_ULTIMATE.start_main_~a~0#1.base| .cse67) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))))) (let ((.cse65 (select .cse64 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse63 (+ 0 (select (select (store .cse64 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse65 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (+ .cse63 (select (select (store .cse64 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse65 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse63)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) .cse18) (< (+ .cse62 1) c_~N~0)))) .cse20) (or .cse1 .cse20 (= (let ((.cse74 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse76 (store .cse25 .cse6 (+ (select .cse25 .cse6) .cse28)))) (store .cse76 .cse5 (+ (select .cse25 .cse5) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse76) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse75 (select .cse74 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse73 (+ 0 (select (select (store .cse74 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse75 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (+ .cse73 (select (select (store .cse74 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse75 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse73)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) .cse18)) (or .cse0 .cse1 .cse19 .cse20 (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int)) (let ((.cse77 (+ |v_ULTIMATE.start_main_~i~0#1_69| 1))) (or (not (>= |v_ULTIMATE.start_main_~i~0#1_69| 0)) (not (< .cse77 c_~N~0)) (< (+ .cse77 1) c_~N~0) (= (let ((.cse79 (let ((.cse88 (store .cse25 .cse17 1))) (let ((.cse85 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse88))) (let ((.cse86 (select .cse85 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse84 (let ((.cse87 (+ (select .cse86 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse88 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_69|)))))) (+ .cse87 (select (select (store .cse85 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse86 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse87)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse77))))))) (let ((.cse81 (store .cse85 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse86 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse84)))) (store .cse81 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse83 (select .cse81 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse82 (store .cse83 .cse6 (+ (select .cse83 .cse6) .cse84)))) (store .cse82 .cse5 (+ (select .cse83 .cse5) (select (select (store .cse81 |c_ULTIMATE.start_main_~a~0#1.base| .cse82) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))))))))) (let ((.cse80 (select .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse78 (+ 0 (select (select (store .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (+ .cse78 (select (select (store .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse78)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))) .cse18))))))))) is different from true [2023-02-18 13:06:37,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-02-18 13:06:40,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-02-18 13:06:42,610 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse33 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse34 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse80 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |c_ULTIMATE.start_main_~i~0#1|)))) (let ((.cse47 (+ .cse33 (select .cse34 .cse80))) (.cse78 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse79 (+ 1 0)) (.cse35 (< .cse78 c_~N~0)) (.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse47))) (.cse0 (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) (let ((.cse40 (not .cse0)) (.cse21 (store .cse34 .cse80 1)) (.cse46 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse7 (not .cse35)) (.cse8 (< (+ .cse79 1) c_~N~0)) (.cse23 (< (+ .cse78 1) c_~N~0)) (.cse1 (not (< .cse79 c_~N~0))) (.cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse79))) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 0))) (.cse22 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse78))) (.cse6 (* c_~N~0 (+ 1 c_~N~0)))) (and (or .cse0 .cse1 (= (let ((.cse2 (+ 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))) (+ .cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))) .cse6)) (or .cse7 .cse8 (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int)) (let ((.cse19 (+ |v_ULTIMATE.start_main_~i~0#1_69| 1))) (or (not (>= |v_ULTIMATE.start_main_~i~0#1_69| 0)) (= (let ((.cse10 (let ((.cse20 (store .cse21 .cse22 1))) (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse20))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse15 (let ((.cse18 (+ (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse20 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_69|)))))) (+ .cse18 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse18)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse19))))))) (let ((.cse12 (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse15)))) (store .cse12 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse14 (select .cse12 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse13 (store .cse14 .cse5 (+ (select .cse14 .cse5) .cse15)))) (store .cse13 .cse4 (+ (select .cse14 .cse4) (select (select (store .cse12 |c_ULTIMATE.start_main_~a~0#1.base| .cse13) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))))))))) (let ((.cse11 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse9 (+ 0 (select (select (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))) (+ .cse9 (select (select (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse9)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))))) .cse6) (not (< .cse19 c_~N~0)) (< (+ .cse19 1) c_~N~0)))) .cse23 .cse1) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int)) (let ((.cse24 (+ |v_ULTIMATE.start_main_~i~0#1_69| 1))) (or (not (>= |v_ULTIMATE.start_main_~i~0#1_69| 0)) (not (< .cse24 c_~N~0)) (= (let ((.cse26 (let ((.cse31 (let ((.cse32 (+ .cse33 (select .cse34 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_69|)))))) (+ .cse32 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse32)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse24))))))) (let ((.cse28 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse31)))) (store .cse28 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse30 (select .cse28 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse29 (store .cse30 .cse5 (+ (select .cse30 .cse5) .cse31)))) (store .cse29 .cse4 (+ (select .cse30 .cse4) (select (select (store .cse28 |c_ULTIMATE.start_main_~a~0#1.base| .cse29) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))) (let ((.cse27 (select .cse26 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse25 (+ 0 (select (select (store .cse26 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))) (+ .cse25 (select (select (store .cse26 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse25)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))))) .cse6) (< (+ .cse24 1) c_~N~0)))) .cse35 .cse8 .cse1) (not (<= c_~N~0 0)) (or .cse35 .cse8 .cse1 (= (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse39 (store .cse34 .cse5 (+ (select .cse34 .cse5) .cse33)))) (store .cse39 .cse4 (+ (select .cse34 .cse4) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse39) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse38 (select .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse36 (+ 0 (select (select (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse38 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))) (+ .cse36 (select (select (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse38 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse36)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))))) .cse6)) (or .cse40 .cse35 .cse8 .cse1 (= (let ((.cse42 (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse45 (store .cse46 .cse5 (+ (select .cse46 .cse5) .cse47)))) (store .cse45 .cse4 (+ (select .cse46 .cse4) (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse45) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse43 (select .cse42 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse41 (+ 0 (select (select (store .cse42 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse43 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))) (+ .cse41 (select (select (store .cse42 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse43 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse41)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))))) .cse6)) (or .cse40 .cse35 .cse8 (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int)) (let ((.cse48 (+ |v_ULTIMATE.start_main_~i~0#1_69| 1))) (or (not (>= |v_ULTIMATE.start_main_~i~0#1_69| 0)) (not (< .cse48 c_~N~0)) (= (let ((.cse50 (let ((.cse56 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse21))) (let ((.cse57 (select .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse55 (let ((.cse58 (+ (select .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse21 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_69|)))))) (+ .cse58 (select (select (store .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse58)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse48))))))) (let ((.cse52 (store .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse55)))) (store .cse52 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse54 (select .cse52 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse53 (store .cse54 .cse5 (+ (select .cse54 .cse5) .cse55)))) (store .cse53 .cse4 (+ (select .cse54 .cse4) (select (select (store .cse52 |c_ULTIMATE.start_main_~a~0#1.base| .cse53) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))))) (let ((.cse51 (select .cse50 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse49 (+ 0 (select (select (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))) (+ .cse49 (select (select (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse49)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))))) .cse6) (< (+ .cse48 1) c_~N~0)))) .cse1) (or .cse7 .cse8 (= (let ((.cse60 (let ((.cse65 (+ .cse47 (select .cse46 .cse22)))) (let ((.cse62 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse65)))) (store .cse62 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse64 (select .cse62 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse63 (store .cse64 .cse5 (+ (select .cse64 .cse5) .cse65)))) (store .cse63 .cse4 (+ (select .cse64 .cse4) (select (select (store .cse62 |c_ULTIMATE.start_main_~a~0#1.base| .cse63) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))) (let ((.cse61 (select .cse60 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse59 (+ 0 (select (select (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse61 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))) (+ .cse59 (select (select (store .cse60 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse61 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse59)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))))) .cse6) .cse23 .cse1) (or .cse7 .cse8 .cse23 .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_69| Int)) (let ((.cse66 (+ |v_ULTIMATE.start_main_~i~0#1_69| 1))) (or (not (>= |v_ULTIMATE.start_main_~i~0#1_69| 0)) (not (< .cse66 c_~N~0)) (< (+ .cse66 1) c_~N~0) (= (let ((.cse68 (let ((.cse77 (store .cse34 .cse22 1))) (let ((.cse74 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse77))) (let ((.cse75 (select .cse74 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse73 (let ((.cse76 (+ (select .cse75 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse77 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_69|)))))) (+ .cse76 (select (select (store .cse74 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse75 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse76)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse66))))))) (let ((.cse70 (store .cse74 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse75 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse73)))) (store .cse70 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse72 (select .cse70 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse71 (store .cse72 .cse5 (+ (select .cse72 .cse5) .cse73)))) (store .cse71 .cse4 (+ (select .cse72 .cse4) (select (select (store .cse70 |c_ULTIMATE.start_main_~a~0#1.base| .cse71) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))))))))) (let ((.cse69 (select .cse68 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse67 (+ 0 (select (select (store .cse68 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse69 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))) (+ .cse67 (select (select (store .cse68 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse69 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse67)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))))) .cse6))))))))))) is different from true [2023-02-18 13:06:46,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-02-18 13:06:53,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-02-18 13:07:41,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-02-18 13:09:09,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-02-18 13:09:13,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:09:13,114 INFO L93 Difference]: Finished difference Result 150 states and 171 transitions. [2023-02-18 13:09:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-02-18 13:09:13,116 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-18 13:09:13,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:09:13,117 INFO L225 Difference]: With dead ends: 150 [2023-02-18 13:09:13,117 INFO L226 Difference]: Without dead ends: 126 [2023-02-18 13:09:13,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3901 ImplicationChecksByTransitivity, 125.2s TimeCoverageRelationStatistics Valid=1741, Invalid=10921, Unknown=2, NotChecked=446, Total=13110 [2023-02-18 13:09:13,121 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 269 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 545 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 44.1s IncrementalHoareTripleChecker+Time [2023-02-18 13:09:13,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 94 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 764 Invalid, 2 Unknown, 24 Unchecked, 44.1s Time] [2023-02-18 13:09:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-18 13:09:13,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 70. [2023-02-18 13:09:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.144927536231884) internal successors, (79), 69 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:09:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2023-02-18 13:09:13,157 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 31 [2023-02-18 13:09:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:09:13,157 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2023-02-18 13:09:13,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:09:13,157 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2023-02-18 13:09:13,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 13:09:13,158 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:09:13,158 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:09:13,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 13:09:13,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:09:13,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:09:13,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:09:13,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2091001604, now seen corresponding path program 5 times [2023-02-18 13:09:13,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:09:13,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409576884] [2023-02-18 13:09:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:09:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:09:13,382 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 13:09:13,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171059999] [2023-02-18 13:09:13,383 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 13:09:13,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:09:13,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:09:13,384 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) [2023-02-18 13:09:13,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 13:09:13,495 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-02-18 13:09:13,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:09:13,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 13:09:13,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:09:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 13:09:13,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:09:13,566 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 13:09:13,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:09:13,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409576884] [2023-02-18 13:09:13,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 13:09:13,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171059999] [2023-02-18 13:09:13,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171059999] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:09:13,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:09:13,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-02-18 13:09:13,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931037432] [2023-02-18 13:09:13,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:09:13,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 13:09:13,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:09:13,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 13:09:13,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-02-18 13:09:13,568 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:09:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:09:13,766 INFO L93 Difference]: Finished difference Result 158 states and 180 transitions. [2023-02-18 13:09:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 13:09:13,766 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-18 13:09:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:09:13,767 INFO L225 Difference]: With dead ends: 158 [2023-02-18 13:09:13,767 INFO L226 Difference]: Without dead ends: 110 [2023-02-18 13:09:13,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2023-02-18 13:09:13,768 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 128 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 13:09:13,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 48 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 13:09:13,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-02-18 13:09:13,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 88. [2023-02-18 13:09:13,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 87 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:09:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2023-02-18 13:09:13,784 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 35 [2023-02-18 13:09:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:09:13,784 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2023-02-18 13:09:13,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:09:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2023-02-18 13:09:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 13:09:13,785 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:09:13,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:09:13,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 13:09:13,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:09:13,992 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:09:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:09:13,992 INFO L85 PathProgramCache]: Analyzing trace with hash 236928956, now seen corresponding path program 6 times [2023-02-18 13:09:13,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:09:13,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334369950] [2023-02-18 13:09:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:09:13,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:09:14,025 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 13:09:14,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197865306] [2023-02-18 13:09:14,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 13:09:14,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:09:14,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:09:14,036 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) [2023-02-18 13:09:14,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 13:09:14,102 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-02-18 13:09:14,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:09:14,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 13:09:14,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:09:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-18 13:09:14,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:09:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-18 13:09:14,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:09:14,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334369950] [2023-02-18 13:09:14,164 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 13:09:14,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197865306] [2023-02-18 13:09:14,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197865306] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:09:14,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:09:14,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-18 13:09:14,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958559263] [2023-02-18 13:09:14,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:09:14,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 13:09:14,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:09:14,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 13:09:14,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-18 13:09:14,166 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:09:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:09:14,282 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2023-02-18 13:09:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 13:09:14,283 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-18 13:09:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:09:14,283 INFO L225 Difference]: With dead ends: 97 [2023-02-18 13:09:14,284 INFO L226 Difference]: Without dead ends: 81 [2023-02-18 13:09:14,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-02-18 13:09:14,285 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 66 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 13:09:14,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 20 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 13:09:14,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-18 13:09:14,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2023-02-18 13:09:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 69 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:09:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2023-02-18 13:09:14,305 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 35 [2023-02-18 13:09:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:09:14,306 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2023-02-18 13:09:14,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:09:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2023-02-18 13:09:14,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-18 13:09:14,311 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:09:14,311 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:09:14,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-18 13:09:14,517 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,SelfDestructingSolverStorable7 [2023-02-18 13:09:14,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:09:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:09:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash 315843584, now seen corresponding path program 7 times [2023-02-18 13:09:14,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:09:14,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054129629] [2023-02-18 13:09:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:09:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:09:14,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 13:09:14,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349701103] [2023-02-18 13:09:14,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 13:09:14,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:09:14,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:09:14,543 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) [2023-02-18 13:09:14,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 13:09:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 13:09:14,624 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 97 conjunts are in the unsatisfiable core [2023-02-18 13:09:14,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:09:14,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 13:09:14,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-18 13:09:14,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-18 13:09:14,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2023-02-18 13:09:14,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 56 [2023-02-18 13:09:14,700 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:09:14,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 57 [2023-02-18 13:09:14,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:09:14,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:09:14,731 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:09:14,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 59 [2023-02-18 13:09:14,765 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 90 treesize of output 61 [2023-02-18 13:09:14,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:09:14,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:09:14,822 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:09:14,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 65 [2023-02-18 13:09:14,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:09:14,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:09:14,868 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:09:14,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 70 [2023-02-18 13:09:14,921 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 97 treesize of output 78 [2023-02-18 13:09:14,951 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 83 treesize of output 84 [2023-02-18 13:09:14,985 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:09:14,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 67 [2023-02-18 13:09:15,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:09:15,046 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:09:15,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:09:15,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 69 [2023-02-18 13:09:15,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 73 [2023-02-18 13:09:15,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 57 [2023-02-18 13:09:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:09:15,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:12:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 13:12:26,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:12:26,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054129629] [2023-02-18 13:12:26,738 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 13:12:26,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349701103] [2023-02-18 13:12:26,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349701103] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:12:26,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:12:26,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2023-02-18 13:12:26,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722998004] [2023-02-18 13:12:26,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:12:26,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-18 13:12:26,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:12:26,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-18 13:12:26,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2839, Unknown=31, NotChecked=0, Total=3080 [2023-02-18 13:12:26,740 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:13:39,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-18 13:13:40,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-18 13:13:42,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-18 13:13:47,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2023-02-18 13:13:50,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-18 13:13:51,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-18 13:13:53,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-18 13:14:08,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2023-02-18 13:14:10,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2023-02-18 13:14:30,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-18 13:14:32,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0, 1] [2023-02-18 13:14:35,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-18 13:14:50,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:14:50,753 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2023-02-18 13:14:50,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-18 13:14:50,754 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-02-18 13:14:50,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:14:50,754 INFO L225 Difference]: With dead ends: 91 [2023-02-18 13:14:50,754 INFO L226 Difference]: Without dead ends: 63 [2023-02-18 13:14:50,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 276.6s TimeCoverageRelationStatistics Valid=304, Invalid=4080, Unknown=38, NotChecked=0, Total=4422 [2023-02-18 13:14:50,755 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.2s IncrementalHoareTripleChecker+Time [2023-02-18 13:14:50,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 165 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1480 Invalid, 3 Unknown, 0 Unchecked, 59.2s Time] [2023-02-18 13:14:50,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-18 13:14:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2023-02-18 13:14:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.098360655737705) internal successors, (67), 61 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:14:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2023-02-18 13:14:50,768 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 39 [2023-02-18 13:14:50,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:14:50,768 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2023-02-18 13:14:50,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:14:50,768 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2023-02-18 13:14:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-18 13:14:50,769 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:14:50,769 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:14:50,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 13:14:50,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:14:50,970 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:14:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:14:50,970 INFO L85 PathProgramCache]: Analyzing trace with hash -702683966, now seen corresponding path program 8 times [2023-02-18 13:14:50,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:14:50,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501111432] [2023-02-18 13:14:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:14:50,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:14:51,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 13:14:51,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185234972] [2023-02-18 13:14:51,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 13:14:51,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:14:51,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:14:51,020 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) [2023-02-18 13:14:51,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 13:14:51,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 13:14:51,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:14:51,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 13:14:51,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:14:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-18 13:14:51,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 13:14:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-18 13:14:51,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 13:14:51,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501111432] [2023-02-18 13:14:51,166 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 13:14:51,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185234972] [2023-02-18 13:14:51,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185234972] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 13:14:51,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 13:14:51,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2023-02-18 13:14:51,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731498975] [2023-02-18 13:14:51,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 13:14:51,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 13:14:51,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 13:14:51,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 13:14:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-02-18 13:14:51,167 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:14:51,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 13:14:51,312 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2023-02-18 13:14:51,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 13:14:51,313 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-02-18 13:14:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 13:14:51,313 INFO L225 Difference]: With dead ends: 71 [2023-02-18 13:14:51,313 INFO L226 Difference]: Without dead ends: 51 [2023-02-18 13:14:51,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-02-18 13:14:51,314 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 86 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 13:14:51,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 26 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 13:14:51,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-18 13:14:51,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2023-02-18 13:14:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:14:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2023-02-18 13:14:51,321 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 41 [2023-02-18 13:14:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 13:14:51,321 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2023-02-18 13:14:51,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 13:14:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2023-02-18 13:14:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-18 13:14:51,322 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 13:14:51,322 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 13:14:51,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-18 13:14:51,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-18 13:14:51,527 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 13:14:51,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 13:14:51,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1719679608, now seen corresponding path program 9 times [2023-02-18 13:14:51,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 13:14:51,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686377001] [2023-02-18 13:14:51,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 13:14:51,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 13:14:51,550 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 13:14:51,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142541846] [2023-02-18 13:14:51,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 13:14:51,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 13:14:51,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 13:14:51,552 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 13:14:51,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 13:14:51,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-18 13:14:51,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 13:14:51,772 WARN L261 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 124 conjunts are in the unsatisfiable core [2023-02-18 13:14:51,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 13:14:51,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-18 13:14:51,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:14:51,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-18 13:14:51,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:14:51,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2023-02-18 13:14:51,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:14:51,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 13:14:51,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 130 [2023-02-18 13:14:51,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:14:51,850 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 13:14:51,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 146 treesize of output 252 [2023-02-18 13:14:52,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:14:52,635 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:14:52,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:14:52,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:14:52,636 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 13:14:52,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:14:52,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 13:14:52,680 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 13:14:52,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 72 select indices, 72 select index equivalence classes, 7 disjoint index pairs (out of 2556 index pairs), introduced 69 new quantified variables, introduced 2464 case distinctions, treesize of input 2824 treesize of output 43393