./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array9_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array9_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 21:51:40,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 21:51:40,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 21:51:40,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 21:51:40,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 21:51:40,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 21:51:40,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 21:51:40,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 21:51:40,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 21:51:40,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 21:51:40,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 21:51:40,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 21:51:40,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 21:51:40,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 21:51:40,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 21:51:40,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 21:51:40,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 21:51:40,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 21:51:40,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 21:51:40,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 21:51:40,761 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 21:51:40,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 21:51:40,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 21:51:40,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 21:51:40,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 21:51:40,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 21:51:40,769 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 21:51:40,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 21:51:40,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 21:51:40,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 21:51:40,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 21:51:40,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 21:51:40,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 21:51:40,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 21:51:40,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 21:51:40,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 21:51:40,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 21:51:40,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 21:51:40,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 21:51:40,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 21:51:40,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 21:51:40,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 21:51:40,778 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 21:51:40,806 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 21:51:40,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 21:51:40,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 21:51:40,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 21:51:40,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 21:51:40,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 21:51:40,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 21:51:40,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 21:51:40,810 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 21:51:40,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 21:51:40,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 21:51:40,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 21:51:40,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 21:51:40,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 21:51:40,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 21:51:40,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 21:51:40,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 21:51:40,812 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 21:51:40,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 21:51:40,813 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 21:51:40,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 21:51:40,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 21:51:40,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 21:51:40,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 21:51:40,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 21:51:40,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 21:51:40,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 21:51:40,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 21:51:40,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 21:51:40,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 21:51:40,815 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 21:51:40,815 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 21:51:40,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 21:51:40,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b [2022-07-20 21:51:41,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 21:51:41,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 21:51:41,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 21:51:41,027 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 21:51:41,028 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 21:51:41,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array9_pattern.c [2022-07-20 21:51:41,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/825820277/2546945357584287981556682eefbafc/FLAG2740e9f98 [2022-07-20 21:51:41,425 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 21:51:41,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array9_pattern.c [2022-07-20 21:51:41,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/825820277/2546945357584287981556682eefbafc/FLAG2740e9f98 [2022-07-20 21:51:41,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/825820277/2546945357584287981556682eefbafc [2022-07-20 21:51:41,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 21:51:41,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 21:51:41,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 21:51:41,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 21:51:41,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 21:51:41,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69973b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41, skipping insertion in model container [2022-07-20 21:51:41,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 21:51:41,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 21:51:41,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array9_pattern.c[1352,1365] [2022-07-20 21:51:41,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 21:51:41,598 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 21:51:41,608 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array9_pattern.c[1352,1365] [2022-07-20 21:51:41,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 21:51:41,629 INFO L208 MainTranslator]: Completed translation [2022-07-20 21:51:41,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41 WrapperNode [2022-07-20 21:51:41,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 21:51:41,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 21:51:41,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 21:51:41,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 21:51:41,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,665 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2022-07-20 21:51:41,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 21:51:41,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 21:51:41,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 21:51:41,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 21:51:41,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 21:51:41,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 21:51:41,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 21:51:41,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 21:51:41,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41" (1/1) ... [2022-07-20 21:51:41,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 21:51:41,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:51:41,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 21:51:41,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 21:51:41,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 21:51:41,748 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 21:51:41,748 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 21:51:41,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 21:51:41,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 21:51:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 21:51:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 21:51:41,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 21:51:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 21:51:41,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 21:51:41,802 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 21:51:41,803 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 21:51:41,939 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 21:51:41,959 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 21:51:41,959 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-20 21:51:41,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:51:41 BoogieIcfgContainer [2022-07-20 21:51:41,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 21:51:41,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 21:51:41,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 21:51:41,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 21:51:41,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:51:41" (1/3) ... [2022-07-20 21:51:41,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a65af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:51:41, skipping insertion in model container [2022-07-20 21:51:41,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:51:41" (2/3) ... [2022-07-20 21:51:41,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a65af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:51:41, skipping insertion in model container [2022-07-20 21:51:41,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:51:41" (3/3) ... [2022-07-20 21:51:41,975 INFO L111 eAbstractionObserver]: Analyzing ICFG array9_pattern.c [2022-07-20 21:51:41,985 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 21:51:41,985 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 21:51:42,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 21:51:42,035 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69a8296c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6ce2f33d [2022-07-20 21:51:42,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 21:51:42,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:51:42,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-20 21:51:42,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:51:42,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:51:42,055 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:51:42,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:51:42,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1127586545, now seen corresponding path program 1 times [2022-07-20 21:51:42,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:51:42,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682771224] [2022-07-20 21:51:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:51:42,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:51:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:51:42,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-20 21:51:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:51:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:51:42,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:51:42,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682771224] [2022-07-20 21:51:42,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682771224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 21:51:42,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 21:51:42,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 21:51:42,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818931471] [2022-07-20 21:51:42,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 21:51:42,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-20 21:51:42,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:51:42,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-20 21:51:42,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 21:51:42,232 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 21:51:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:51:42,247 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2022-07-20 21:51:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-20 21:51:42,249 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-20 21:51:42,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:51:42,254 INFO L225 Difference]: With dead ends: 53 [2022-07-20 21:51:42,254 INFO L226 Difference]: Without dead ends: 24 [2022-07-20 21:51:42,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 21:51:42,260 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 21:51:42,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 21:51:42,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-20 21:51:42,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-07-20 21:51:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:51:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-07-20 21:51:42,289 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2022-07-20 21:51:42,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:51:42,289 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-07-20 21:51:42,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-20 21:51:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-07-20 21:51:42,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-20 21:51:42,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:51:42,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:51:42,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 21:51:42,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:51:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:51:42,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1008571545, now seen corresponding path program 1 times [2022-07-20 21:51:42,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:51:42,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323986444] [2022-07-20 21:51:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:51:42,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:51:42,331 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:51:42,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027626699] [2022-07-20 21:51:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:51:42,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:51:42,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:51:42,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:51:42,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 21:51:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:51:42,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 21:51:42,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:51:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:51:42,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 21:51:42,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:51:42,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323986444] [2022-07-20 21:51:42,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:51:42,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027626699] [2022-07-20 21:51:42,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027626699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 21:51:42,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 21:51:42,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 21:51:42,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956952077] [2022-07-20 21:51:42,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 21:51:42,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 21:51:42,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:51:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 21:51:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-20 21:51:42,475 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:51:42,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:51:42,580 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-07-20 21:51:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 21:51:42,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-07-20 21:51:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:51:42,583 INFO L225 Difference]: With dead ends: 50 [2022-07-20 21:51:42,584 INFO L226 Difference]: Without dead ends: 32 [2022-07-20 21:51:42,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-20 21:51:42,586 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:51:42,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 60 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:51:42,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-20 21:51:42,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-07-20 21:51:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:51:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-07-20 21:51:42,597 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2022-07-20 21:51:42,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:51:42,597 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-07-20 21:51:42,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:51:42,598 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-07-20 21:51:42,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-20 21:51:42,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:51:42,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:51:42,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 21:51:42,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:51:42,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:51:42,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:51:42,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1890411897, now seen corresponding path program 1 times [2022-07-20 21:51:42,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:51:42,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240399339] [2022-07-20 21:51:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:51:42,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:51:42,837 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:51:42,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550007053] [2022-07-20 21:51:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:51:42,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:51:42,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:51:42,843 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:51:42,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 21:51:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:51:42,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-20 21:51:42,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:51:42,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:51:43,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:51:43,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-07-20 21:51:43,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:51:43,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-20 21:51:43,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:51:43,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2022-07-20 21:51:43,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:51:43,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 12 [2022-07-20 21:51:43,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:51:43,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:51:47,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:51:47,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240399339] [2022-07-20 21:51:47,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:51:47,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550007053] [2022-07-20 21:51:47,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550007053] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:51:47,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:51:47,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-07-20 21:51:47,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167912885] [2022-07-20 21:51:47,935 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:51:47,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-20 21:51:47,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:51:47,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-20 21:51:47,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=413, Unknown=2, NotChecked=0, Total=506 [2022-07-20 21:51:47,936 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:51:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:51:48,166 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2022-07-20 21:51:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-20 21:51:48,167 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-07-20 21:51:48,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:51:48,169 INFO L225 Difference]: With dead ends: 70 [2022-07-20 21:51:48,169 INFO L226 Difference]: Without dead ends: 50 [2022-07-20 21:51:48,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=161, Invalid=593, Unknown=2, NotChecked=0, Total=756 [2022-07-20 21:51:48,170 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:51:48,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 148 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 85 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2022-07-20 21:51:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-20 21:51:48,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2022-07-20 21:51:48,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:51:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-07-20 21:51:48,187 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 29 [2022-07-20 21:51:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:51:48,187 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-07-20 21:51:48,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:51:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-07-20 21:51:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-20 21:51:48,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:51:48,189 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:51:48,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 21:51:48,399 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,SelfDestructingSolverStorable2 [2022-07-20 21:51:48,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:51:48,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:51:48,400 INFO L85 PathProgramCache]: Analyzing trace with hash -32099493, now seen corresponding path program 2 times [2022-07-20 21:51:48,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:51:48,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896819265] [2022-07-20 21:51:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:51:48,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:51:48,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:51:48,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447465908] [2022-07-20 21:51:48,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 21:51:48,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:51:48,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:51:48,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:51:48,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 21:51:48,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 21:51:48,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:51:48,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 21:51:48,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:51:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:51:48,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:51:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 21:51:48,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:51:48,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896819265] [2022-07-20 21:51:48,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:51:48,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447465908] [2022-07-20 21:51:48,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447465908] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:51:48,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 21:51:48,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-20 21:51:48,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887002731] [2022-07-20 21:51:48,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 21:51:48,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 21:51:48,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:51:48,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 21:51:48,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-20 21:51:48,576 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:51:48,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:51:48,679 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-07-20 21:51:48,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 21:51:48,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-07-20 21:51:48,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:51:48,680 INFO L225 Difference]: With dead ends: 61 [2022-07-20 21:51:48,680 INFO L226 Difference]: Without dead ends: 40 [2022-07-20 21:51:48,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-20 21:51:48,681 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 46 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:51:48,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 110 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:51:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-20 21:51:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2022-07-20 21:51:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:51:48,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-07-20 21:51:48,685 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 31 [2022-07-20 21:51:48,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:51:48,685 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-07-20 21:51:48,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:51:48,685 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-07-20 21:51:48,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-20 21:51:48,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:51:48,686 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:51:48,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 21:51:48,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:51:48,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:51:48,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:51:48,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1857874167, now seen corresponding path program 3 times [2022-07-20 21:51:48,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:51:48,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228581944] [2022-07-20 21:51:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:51:48,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:51:48,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:51:48,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650903903] [2022-07-20 21:51:48,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-20 21:51:48,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:51:48,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:51:48,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:51:48,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 21:51:48,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-20 21:51:48,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:51:48,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 21:51:48,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:51:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:51:49,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:51:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 21:51:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:51:49,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228581944] [2022-07-20 21:51:49,054 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:51:49,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650903903] [2022-07-20 21:51:49,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650903903] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:51:49,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 21:51:49,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-20 21:51:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321236851] [2022-07-20 21:51:49,055 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 21:51:49,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 21:51:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:51:49,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 21:51:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-20 21:51:49,056 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:51:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:51:49,137 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-07-20 21:51:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 21:51:49,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-07-20 21:51:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:51:49,138 INFO L225 Difference]: With dead ends: 39 [2022-07-20 21:51:49,138 INFO L226 Difference]: Without dead ends: 35 [2022-07-20 21:51:49,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-20 21:51:49,139 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 21:51:49,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 91 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 21:51:49,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-20 21:51:49,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-07-20 21:51:49,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:51:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-07-20 21:51:49,142 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 31 [2022-07-20 21:51:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:51:49,143 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-07-20 21:51:49,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:51:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-07-20 21:51:49,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-20 21:51:49,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:51:49,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:51:49,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-20 21:51:49,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:51:49,361 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:51:49,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:51:49,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1236086951, now seen corresponding path program 4 times [2022-07-20 21:51:49,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:51:49,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061199158] [2022-07-20 21:51:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:51:49,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:51:49,375 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:51:49,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586320024] [2022-07-20 21:51:49,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-20 21:51:49,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:51:49,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:51:49,376 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:51:49,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-20 21:51:49,440 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-20 21:51:49,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:51:49,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-20 21:51:49,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:51:49,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:51:49,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:51:49,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-07-20 21:51:49,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:51:49,512 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-07-20 21:51:49,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2022-07-20 21:51:49,884 INFO L356 Elim1Store]: treesize reduction 35, result has 30.0 percent of original size [2022-07-20 21:51:49,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 52 [2022-07-20 21:51:50,729 INFO L356 Elim1Store]: treesize reduction 108, result has 10.7 percent of original size [2022-07-20 21:51:50,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 59 [2022-07-20 21:51:51,064 INFO L356 Elim1Store]: treesize reduction 174, result has 7.0 percent of original size [2022-07-20 21:51:51,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 82 treesize of output 32 [2022-07-20 21:51:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:51:51,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:51:59,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:51:59,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061199158] [2022-07-20 21:51:59,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:51:59,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586320024] [2022-07-20 21:51:59,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586320024] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:51:59,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:51:59,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-20 21:51:59,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44898101] [2022-07-20 21:51:59,485 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:51:59,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-20 21:51:59,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:51:59,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-20 21:51:59,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=928, Unknown=4, NotChecked=0, Total=1122 [2022-07-20 21:51:59,486 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:51:59,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:51:59,831 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2022-07-20 21:51:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-20 21:51:59,839 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-20 21:51:59,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:51:59,840 INFO L225 Difference]: With dead ends: 61 [2022-07-20 21:51:59,840 INFO L226 Difference]: Without dead ends: 57 [2022-07-20 21:51:59,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=257, Invalid=1145, Unknown=4, NotChecked=0, Total=1406 [2022-07-20 21:51:59,841 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:51:59,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 222 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2022-07-20 21:51:59,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-20 21:51:59,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2022-07-20 21:51:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:51:59,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2022-07-20 21:51:59,846 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 33 [2022-07-20 21:51:59,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:51:59,846 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2022-07-20 21:51:59,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 21 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:51:59,846 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2022-07-20 21:51:59,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-20 21:51:59,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:51:59,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:51:59,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-20 21:52:00,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:52:00,069 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:52:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:52:00,069 INFO L85 PathProgramCache]: Analyzing trace with hash -977921513, now seen corresponding path program 1 times [2022-07-20 21:52:00,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:52:00,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146585521] [2022-07-20 21:52:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:52:00,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:52:00,083 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:52:00,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363912064] [2022-07-20 21:52:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:52:00,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:52:00,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:52:00,085 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:52:00,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-20 21:52:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:52:00,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-20 21:52:00,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:52:00,171 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:52:00,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:00,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-20 21:52:00,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-07-20 21:52:00,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:52:00,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:52:00,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:00,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:00,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2022-07-20 21:52:00,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:00,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:00,697 INFO L356 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size [2022-07-20 21:52:00,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 68 [2022-07-20 21:52:01,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:01,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:01,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:01,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:52:01,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 55 [2022-07-20 21:52:04,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:04,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:52:04,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 22 [2022-07-20 21:52:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:52:04,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:52:18,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:52:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146585521] [2022-07-20 21:52:18,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:52:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363912064] [2022-07-20 21:52:18,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363912064] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:52:18,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:52:18,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-07-20 21:52:18,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427041618] [2022-07-20 21:52:18,336 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:52:18,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-20 21:52:18,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:52:18,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-20 21:52:18,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=716, Unknown=9, NotChecked=0, Total=870 [2022-07-20 21:52:18,337 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:52:20,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:52:20,411 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-07-20 21:52:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-20 21:52:20,411 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-07-20 21:52:20,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:52:20,412 INFO L225 Difference]: With dead ends: 65 [2022-07-20 21:52:20,412 INFO L226 Difference]: Without dead ends: 61 [2022-07-20 21:52:20,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=194, Invalid=916, Unknown=12, NotChecked=0, Total=1122 [2022-07-20 21:52:20,413 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:52:20,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 238 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2022-07-20 21:52:20,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-07-20 21:52:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2022-07-20 21:52:20,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:52:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2022-07-20 21:52:20,420 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 33 [2022-07-20 21:52:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:52:20,420 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2022-07-20 21:52:20,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.380952380952381) internal successors, (29), 19 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:52:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2022-07-20 21:52:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-20 21:52:20,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:52:20,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:52:20,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-20 21:52:20,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:52:20,638 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:52:20,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:52:20,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1879614779, now seen corresponding path program 5 times [2022-07-20 21:52:20,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:52:20,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698142344] [2022-07-20 21:52:20,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:52:20,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:52:20,650 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:52:20,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1018441221] [2022-07-20 21:52:20,650 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-20 21:52:20,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:52:20,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:52:20,657 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:52:20,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-20 21:52:20,709 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-20 21:52:20,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:52:20,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 21:52:20,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:52:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:52:20,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:52:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 21:52:20,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:52:20,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698142344] [2022-07-20 21:52:20,829 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:52:20,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018441221] [2022-07-20 21:52:20,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018441221] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:52:20,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 21:52:20,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-20 21:52:20,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784395178] [2022-07-20 21:52:20,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 21:52:20,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 21:52:20,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:52:20,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 21:52:20,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-20 21:52:20,830 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:52:20,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:52:20,921 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2022-07-20 21:52:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-20 21:52:20,929 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-07-20 21:52:20,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:52:20,933 INFO L225 Difference]: With dead ends: 87 [2022-07-20 21:52:20,934 INFO L226 Difference]: Without dead ends: 75 [2022-07-20 21:52:20,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-20 21:52:20,935 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 80 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:52:20,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 117 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:52:20,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-20 21:52:20,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2022-07-20 21:52:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 54 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-20 21:52:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2022-07-20 21:52:20,952 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 35 [2022-07-20 21:52:20,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:52:20,952 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2022-07-20 21:52:20,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:52:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2022-07-20 21:52:20,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-20 21:52:20,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:52:20,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:52:20,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-20 21:52:21,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:52:21,159 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:52:21,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:52:21,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1373135831, now seen corresponding path program 6 times [2022-07-20 21:52:21,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:52:21,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233121002] [2022-07-20 21:52:21,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:52:21,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:52:21,172 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:52:21,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844665800] [2022-07-20 21:52:21,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-20 21:52:21,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:52:21,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:52:21,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:52:21,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-20 21:52:21,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-20 21:52:21,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:52:21,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 21:52:21,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:52:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:52:21,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:52:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 21:52:21,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:52:21,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233121002] [2022-07-20 21:52:21,346 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:52:21,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844665800] [2022-07-20 21:52:21,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844665800] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:52:21,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 21:52:21,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-20 21:52:21,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404680727] [2022-07-20 21:52:21,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 21:52:21,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 21:52:21,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:52:21,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 21:52:21,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-20 21:52:21,348 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:52:21,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:52:21,482 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-07-20 21:52:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 21:52:21,482 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-07-20 21:52:21,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:52:21,483 INFO L225 Difference]: With dead ends: 74 [2022-07-20 21:52:21,483 INFO L226 Difference]: Without dead ends: 70 [2022-07-20 21:52:21,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-20 21:52:21,484 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 76 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:52:21,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 110 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:52:21,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-20 21:52:21,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-07-20 21:52:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-20 21:52:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2022-07-20 21:52:21,490 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 35 [2022-07-20 21:52:21,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:52:21,490 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2022-07-20 21:52:21,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:52:21,490 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2022-07-20 21:52:21,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-20 21:52:21,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:52:21,491 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:52:21,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-20 21:52:21,691 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,SelfDestructingSolverStorable8 [2022-07-20 21:52:21,692 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:52:21,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:52:21,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1081807417, now seen corresponding path program 7 times [2022-07-20 21:52:21,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:52:21,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319262822] [2022-07-20 21:52:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:52:21,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:52:21,710 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:52:21,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112355036] [2022-07-20 21:52:21,711 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-20 21:52:21,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:52:21,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:52:21,712 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:52:21,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-20 21:52:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:52:21,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-20 21:52:21,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:52:21,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:52:21,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:21,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-20 21:52:21,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:52:21,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-07-20 21:52:21,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:21,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:21,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2022-07-20 21:52:21,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:21,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:21,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:21,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:21,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:21,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:21,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 63 [2022-07-20 21:52:22,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,320 INFO L356 Elim1Store]: treesize reduction 66, result has 40.0 percent of original size [2022-07-20 21:52:22,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 98 [2022-07-20 21:52:22,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:22,534 INFO L356 Elim1Store]: treesize reduction 164, result has 13.7 percent of original size [2022-07-20 21:52:22,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 103 treesize of output 112 [2022-07-20 21:52:23,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 49 [2022-07-20 21:52:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:52:23,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:52:25,663 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_421 Int) (|ULTIMATE.start_main_~index~0#1| Int)) (or (<= (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) v_ArrVal_421))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8))))) (div (+ c_~ARR_SIZE~0 2) 3)) (not (<= v_ArrVal_421 (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))) is different from false [2022-07-20 21:52:25,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:52:25,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319262822] [2022-07-20 21:52:25,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:52:25,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112355036] [2022-07-20 21:52:25,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112355036] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:52:25,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:52:25,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-07-20 21:52:25,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768331202] [2022-07-20 21:52:25,675 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:52:25,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-20 21:52:25,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:52:25,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-20 21:52:25,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=653, Unknown=1, NotChecked=52, Total=812 [2022-07-20 21:52:25,676 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:52:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:52:26,229 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2022-07-20 21:52:26,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-20 21:52:26,229 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-07-20 21:52:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:52:26,230 INFO L225 Difference]: With dead ends: 92 [2022-07-20 21:52:26,230 INFO L226 Difference]: Without dead ends: 88 [2022-07-20 21:52:26,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=148, Invalid=847, Unknown=1, NotChecked=60, Total=1056 [2022-07-20 21:52:26,231 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 34 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 21:52:26,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 214 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 330 Invalid, 0 Unknown, 36 Unchecked, 0.3s Time] [2022-07-20 21:52:26,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-20 21:52:26,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 78. [2022-07-20 21:52:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-20 21:52:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-07-20 21:52:26,239 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 37 [2022-07-20 21:52:26,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:52:26,239 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-07-20 21:52:26,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:52:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-07-20 21:52:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-20 21:52:26,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:52:26,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:52:26,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-20 21:52:26,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-20 21:52:26,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:52:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:52:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash 70690167, now seen corresponding path program 2 times [2022-07-20 21:52:26,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:52:26,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995250473] [2022-07-20 21:52:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:52:26,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:52:26,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:52:26,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411111969] [2022-07-20 21:52:26,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 21:52:26,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:52:26,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:52:26,485 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:52:26,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-20 21:52:26,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 21:52:26,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:52:26,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 72 conjunts are in the unsatisfiable core [2022-07-20 21:52:26,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:52:26,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:52:26,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:26,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-20 21:52:26,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:52:26,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-07-20 21:52:26,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:26,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:26,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2022-07-20 21:52:26,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:26,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:26,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:26,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:26,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:26,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:26,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 83 [2022-07-20 21:52:27,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,283 INFO L356 Elim1Store]: treesize reduction 66, result has 40.0 percent of original size [2022-07-20 21:52:27,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 98 [2022-07-20 21:52:27,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:27,540 INFO L356 Elim1Store]: treesize reduction 106, result has 29.3 percent of original size [2022-07-20 21:52:27,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 130 [2022-07-20 21:52:29,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:29,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:52:29,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:29,055 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:52:29,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 4 disjoint index pairs (out of 45 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 124 treesize of output 124 [2022-07-20 21:52:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:52:29,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:52:30,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:52:30,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995250473] [2022-07-20 21:52:30,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:52:30,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411111969] [2022-07-20 21:52:30,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411111969] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:52:30,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:52:30,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-20 21:52:30,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553056363] [2022-07-20 21:52:30,422 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:52:30,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-20 21:52:30,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:52:30,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-20 21:52:30,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1320, Unknown=0, NotChecked=0, Total=1560 [2022-07-20 21:52:30,424 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:52:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:52:30,912 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2022-07-20 21:52:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-20 21:52:30,912 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-07-20 21:52:30,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:52:30,913 INFO L225 Difference]: With dead ends: 107 [2022-07-20 21:52:30,913 INFO L226 Difference]: Without dead ends: 103 [2022-07-20 21:52:30,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=278, Invalid=1528, Unknown=0, NotChecked=0, Total=1806 [2022-07-20 21:52:30,914 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 20 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 21:52:30,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 341 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 333 Invalid, 0 Unknown, 155 Unchecked, 0.3s Time] [2022-07-20 21:52:30,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-07-20 21:52:30,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89. [2022-07-20 21:52:30,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 76 states have internal predecessors, (88), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-20 21:52:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2022-07-20 21:52:30,924 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 37 [2022-07-20 21:52:30,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:52:30,924 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2022-07-20 21:52:30,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:52:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2022-07-20 21:52:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-20 21:52:30,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:52:30,925 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:52:30,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-20 21:52:31,144 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,SelfDestructingSolverStorable10 [2022-07-20 21:52:31,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:52:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:52:31,145 INFO L85 PathProgramCache]: Analyzing trace with hash 288075803, now seen corresponding path program 8 times [2022-07-20 21:52:31,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:52:31,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610477301] [2022-07-20 21:52:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:52:31,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:52:31,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:52:31,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113322464] [2022-07-20 21:52:31,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 21:52:31,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:52:31,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:52:31,159 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) [2022-07-20 21:52:31,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-20 21:52:31,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 21:52:31,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:52:31,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 21:52:31,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:52:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:52:31,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:52:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 21:52:31,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:52:31,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610477301] [2022-07-20 21:52:31,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:52:31,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113322464] [2022-07-20 21:52:31,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113322464] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:52:31,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 21:52:31,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-20 21:52:31,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037885734] [2022-07-20 21:52:31,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 21:52:31,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-20 21:52:31,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:52:31,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-20 21:52:31,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-20 21:52:31,348 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:52:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:52:31,522 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2022-07-20 21:52:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-20 21:52:31,523 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-07-20 21:52:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:52:31,523 INFO L225 Difference]: With dead ends: 144 [2022-07-20 21:52:31,523 INFO L226 Difference]: Without dead ends: 130 [2022-07-20 21:52:31,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-07-20 21:52:31,524 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 116 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:52:31,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 136 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:52:31,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-07-20 21:52:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2022-07-20 21:52:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 89 states have internal predecessors, (103), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-20 21:52:31,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 117 transitions. [2022-07-20 21:52:31,536 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 117 transitions. Word has length 39 [2022-07-20 21:52:31,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:52:31,536 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 117 transitions. [2022-07-20 21:52:31,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:52:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 117 transitions. [2022-07-20 21:52:31,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-20 21:52:31,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:52:31,536 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:52:31,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-20 21:52:31,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-20 21:52:31,737 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:52:31,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:52:31,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2118006027, now seen corresponding path program 3 times [2022-07-20 21:52:31,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:52:31,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944130517] [2022-07-20 21:52:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:52:31,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:52:31,762 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:52:31,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551294534] [2022-07-20 21:52:31,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-20 21:52:31,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:52:31,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:52:31,769 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:52:31,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-20 21:52:31,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-20 21:52:31,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:52:31,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 21:52:31,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:52:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:52:31,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:52:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 21:52:32,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:52:32,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944130517] [2022-07-20 21:52:32,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:52:32,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551294534] [2022-07-20 21:52:32,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551294534] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:52:32,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 21:52:32,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-20 21:52:32,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513362127] [2022-07-20 21:52:32,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 21:52:32,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-20 21:52:32,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:52:32,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-20 21:52:32,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-20 21:52:32,017 INFO L87 Difference]: Start difference. First operand 104 states and 117 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:52:32,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:52:32,178 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2022-07-20 21:52:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-20 21:52:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-07-20 21:52:32,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:52:32,179 INFO L225 Difference]: With dead ends: 129 [2022-07-20 21:52:32,179 INFO L226 Difference]: Without dead ends: 125 [2022-07-20 21:52:32,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-07-20 21:52:32,180 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 75 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:52:32,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 112 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:52:32,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-07-20 21:52:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 93. [2022-07-20 21:52:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 80 states have (on average 1.15) internal successors, (92), 80 states have internal predecessors, (92), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-20 21:52:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2022-07-20 21:52:32,190 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 39 [2022-07-20 21:52:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:52:32,190 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2022-07-20 21:52:32,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:52:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2022-07-20 21:52:32,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-20 21:52:32,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:52:32,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:52:32,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-20 21:52:32,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-20 21:52:32,402 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:52:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:52:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1485008409, now seen corresponding path program 9 times [2022-07-20 21:52:32,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:52:32,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820775310] [2022-07-20 21:52:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:52:32,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:52:32,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:52:32,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1357297063] [2022-07-20 21:52:32,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-20 21:52:32,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:52:32,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:52:32,416 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:52:32,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-20 21:52:32,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-20 21:52:32,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:52:32,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-20 21:52:32,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:52:32,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:52:32,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-20 21:52:32,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:52:32,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-07-20 21:52:32,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2022-07-20 21:52:32,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2022-07-20 21:52:32,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-07-20 21:52:32,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-07-20 21:52:32,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2022-07-20 21:52:32,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2022-07-20 21:52:32,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,737 INFO L356 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size [2022-07-20 21:52:32,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 46 [2022-07-20 21:52:32,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,758 INFO L356 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2022-07-20 21:52:32,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 40 [2022-07-20 21:52:32,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 83 [2022-07-20 21:52:32,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,900 INFO L356 Elim1Store]: treesize reduction 70, result has 29.3 percent of original size [2022-07-20 21:52:32,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 35 treesize of output 61 [2022-07-20 21:52:32,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:32,934 INFO L356 Elim1Store]: treesize reduction 130, result has 15.0 percent of original size [2022-07-20 21:52:32,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 103 treesize of output 126 [2022-07-20 21:52:36,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:36,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:36,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:36,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:36,579 INFO L356 Elim1Store]: treesize reduction 177, result has 36.1 percent of original size [2022-07-20 21:52:36,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 106 treesize of output 186 [2022-07-20 21:52:40,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:40,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:40,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:40,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:40,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:52:40,165 INFO L356 Elim1Store]: treesize reduction 297, result has 9.5 percent of original size [2022-07-20 21:52:40,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 7 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 17 case distinctions, treesize of input 149 treesize of output 164 [2022-07-20 21:53:04,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:04,083 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:53:04,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 15 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 10 case distinctions, treesize of input 169 treesize of output 207 [2022-07-20 21:53:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:53:05,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:53:16,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:53:16,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820775310] [2022-07-20 21:53:16,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:53:16,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357297063] [2022-07-20 21:53:16,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357297063] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:53:16,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:53:16,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-07-20 21:53:16,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243865769] [2022-07-20 21:53:16,131 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:53:16,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-20 21:53:16,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:53:16,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-20 21:53:16,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1742, Unknown=15, NotChecked=0, Total=1980 [2022-07-20 21:53:16,132 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 28 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:53:18,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:53:18,042 INFO L93 Difference]: Finished difference Result 121 states and 134 transitions. [2022-07-20 21:53:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-20 21:53:18,042 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 28 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-07-20 21:53:18,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:53:18,043 INFO L225 Difference]: With dead ends: 121 [2022-07-20 21:53:18,043 INFO L226 Difference]: Without dead ends: 117 [2022-07-20 21:53:18,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=292, Invalid=2448, Unknown=16, NotChecked=0, Total=2756 [2022-07-20 21:53:18,044 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:53:18,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 382 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 127 Invalid, 0 Unknown, 242 Unchecked, 0.1s Time] [2022-07-20 21:53:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-20 21:53:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2022-07-20 21:53:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 91 states have internal predecessors, (105), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-20 21:53:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2022-07-20 21:53:18,063 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 41 [2022-07-20 21:53:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:53:18,063 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2022-07-20 21:53:18,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 28 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:53:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2022-07-20 21:53:18,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-20 21:53:18,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:53:18,064 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:53:18,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-20 21:53:18,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-20 21:53:18,265 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:53:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:53:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash 463940055, now seen corresponding path program 4 times [2022-07-20 21:53:18,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:53:18,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539589206] [2022-07-20 21:53:18,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:53:18,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:53:18,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:53:18,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547828049] [2022-07-20 21:53:18,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-20 21:53:18,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:53:18,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:53:18,281 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:53:18,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-20 21:53:18,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-20 21:53:18,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:53:18,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 90 conjunts are in the unsatisfiable core [2022-07-20 21:53:18,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:53:18,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:53:18,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-20 21:53:18,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:53:18,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-07-20 21:53:18,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-07-20 21:53:18,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 73 [2022-07-20 21:53:18,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:18,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 103 [2022-07-20 21:53:19,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:19,307 INFO L356 Elim1Store]: treesize reduction 90, result has 39.6 percent of original size [2022-07-20 21:53:19,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 128 [2022-07-20 21:53:20,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:20,924 INFO L356 Elim1Store]: treesize reduction 144, result has 29.1 percent of original size [2022-07-20 21:53:20,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 13 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 119 treesize of output 166 [2022-07-20 21:53:24,605 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:53:24,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 7 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 8 case distinctions, treesize of input 162 treesize of output 166 [2022-07-20 21:53:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:53:25,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:53:47,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:53:47,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539589206] [2022-07-20 21:53:47,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:53:47,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547828049] [2022-07-20 21:53:47,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547828049] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:53:47,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:53:47,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-07-20 21:53:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205744304] [2022-07-20 21:53:47,020 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:53:47,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-20 21:53:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:53:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-20 21:53:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1461, Unknown=9, NotChecked=0, Total=1722 [2022-07-20 21:53:47,021 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:53:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:53:48,401 INFO L93 Difference]: Finished difference Result 149 states and 170 transitions. [2022-07-20 21:53:48,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-20 21:53:48,402 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-07-20 21:53:48,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:53:48,402 INFO L225 Difference]: With dead ends: 149 [2022-07-20 21:53:48,402 INFO L226 Difference]: Without dead ends: 145 [2022-07-20 21:53:48,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=288, Invalid=1682, Unknown=10, NotChecked=0, Total=1980 [2022-07-20 21:53:48,403 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 243 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 21:53:48,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 354 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 400 Invalid, 0 Unknown, 243 Unchecked, 0.4s Time] [2022-07-20 21:53:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-20 21:53:48,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 117. [2022-07-20 21:53:48,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 100 states have (on average 1.16) internal successors, (116), 100 states have internal predecessors, (116), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 21:53:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 132 transitions. [2022-07-20 21:53:48,423 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 132 transitions. Word has length 41 [2022-07-20 21:53:48,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:53:48,423 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 132 transitions. [2022-07-20 21:53:48,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 27 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:53:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 132 transitions. [2022-07-20 21:53:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 21:53:48,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:53:48,425 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:53:48,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-20 21:53:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:53:48,639 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:53:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:53:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2111753712, now seen corresponding path program 1 times [2022-07-20 21:53:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:53:48,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657886014] [2022-07-20 21:53:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:53:48,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:53:48,648 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:53:48,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124139870] [2022-07-20 21:53:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:53:48,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:53:48,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:53:48,650 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:53:48,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-20 21:53:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:53:48,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-20 21:53:48,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:53:48,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:53:48,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:48,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-07-20 21:53:48,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:53:48,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:48,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-07-20 21:53:49,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:49,200 INFO L356 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-07-20 21:53:49,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 52 [2022-07-20 21:53:49,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:53:49,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:49,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2022-07-20 21:53:49,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:49,538 INFO L356 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-07-20 21:53:49,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 52 [2022-07-20 21:53:50,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:53:50,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:50,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:53:50,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 56 [2022-07-20 21:53:50,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:53:50,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 20 [2022-07-20 21:53:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-20 21:53:50,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:54:00,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:54:00,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657886014] [2022-07-20 21:54:00,112 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:54:00,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124139870] [2022-07-20 21:54:00,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124139870] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:54:00,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:54:00,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-07-20 21:54:00,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523017336] [2022-07-20 21:54:00,112 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:54:00,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-20 21:54:00,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:54:00,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-20 21:54:00,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=851, Unknown=3, NotChecked=0, Total=992 [2022-07-20 21:54:00,113 INFO L87 Difference]: Start difference. First operand 117 states and 132 transitions. Second operand has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 21 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:54:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:54:01,401 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2022-07-20 21:54:01,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-20 21:54:01,402 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 21 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-07-20 21:54:01,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:54:01,402 INFO L225 Difference]: With dead ends: 141 [2022-07-20 21:54:01,402 INFO L226 Difference]: Without dead ends: 131 [2022-07-20 21:54:01,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=256, Invalid=1300, Unknown=4, NotChecked=0, Total=1560 [2022-07-20 21:54:01,403 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 21:54:01,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 304 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 215 Invalid, 0 Unknown, 167 Unchecked, 0.3s Time] [2022-07-20 21:54:01,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-20 21:54:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2022-07-20 21:54:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.1574074074074074) internal successors, (125), 108 states have internal predecessors, (125), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-20 21:54:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 143 transitions. [2022-07-20 21:54:01,420 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 143 transitions. Word has length 43 [2022-07-20 21:54:01,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:54:01,420 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 143 transitions. [2022-07-20 21:54:01,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.434782608695652) internal successors, (33), 21 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:54:01,420 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 143 transitions. [2022-07-20 21:54:01,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 21:54:01,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:54:01,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:54:01,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-20 21:54:01,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-20 21:54:01,621 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:54:01,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:54:01,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1853588274, now seen corresponding path program 1 times [2022-07-20 21:54:01,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:54:01,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231931708] [2022-07-20 21:54:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:54:01,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:54:01,630 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:54:01,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422684708] [2022-07-20 21:54:01,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:54:01,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:54:01,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:54:01,632 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:54:01,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-20 21:54:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:54:01,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-20 21:54:01,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:54:01,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:54:01,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:01,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-07-20 21:54:01,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:54:01,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:01,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-07-20 21:54:02,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:02,183 INFO L356 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-07-20 21:54:02,183 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 52 [2022-07-20 21:54:02,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:02,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:02,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:02,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 56 [2022-07-20 21:54:08,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:08,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:08,378 INFO L356 Elim1Store]: treesize reduction 60, result has 36.8 percent of original size [2022-07-20 21:54:08,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 85 [2022-07-20 21:54:10,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:10,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:10,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:10,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:10,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:10,880 INFO L356 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2022-07-20 21:54:10,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2022-07-20 21:54:11,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:11,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:11,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:11,322 INFO L356 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2022-07-20 21:54:11,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 70 treesize of output 38 [2022-07-20 21:54:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:54:11,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:54:26,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:54:26,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231931708] [2022-07-20 21:54:26,517 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:54:26,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422684708] [2022-07-20 21:54:26,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422684708] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:54:26,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:54:26,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-07-20 21:54:26,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078448680] [2022-07-20 21:54:26,518 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:54:26,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-20 21:54:26,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:54:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-20 21:54:26,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1122, Unknown=20, NotChecked=0, Total=1332 [2022-07-20 21:54:26,519 INFO L87 Difference]: Start difference. First operand 127 states and 143 transitions. Second operand has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 24 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:54:33,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:54:33,132 INFO L93 Difference]: Finished difference Result 149 states and 169 transitions. [2022-07-20 21:54:33,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-20 21:54:33,133 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 24 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43 [2022-07-20 21:54:33,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:54:33,134 INFO L225 Difference]: With dead ends: 149 [2022-07-20 21:54:33,134 INFO L226 Difference]: Without dead ends: 139 [2022-07-20 21:54:33,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=234, Invalid=1460, Unknown=28, NotChecked=0, Total=1722 [2022-07-20 21:54:33,135 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:54:33,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 241 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 130 Invalid, 0 Unknown, 199 Unchecked, 0.1s Time] [2022-07-20 21:54:33,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-20 21:54:33,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2022-07-20 21:54:33,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 102 states have (on average 1.1568627450980393) internal successors, (118), 102 states have internal predecessors, (118), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-20 21:54:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2022-07-20 21:54:33,154 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 43 [2022-07-20 21:54:33,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:54:33,154 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2022-07-20 21:54:33,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 24 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:54:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2022-07-20 21:54:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 21:54:33,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:54:33,155 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:54:33,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-20 21:54:33,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-20 21:54:33,356 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:54:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:54:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1892898994, now seen corresponding path program 2 times [2022-07-20 21:54:33,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:54:33,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328219140] [2022-07-20 21:54:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:54:33,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:54:33,368 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:54:33,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016559520] [2022-07-20 21:54:33,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 21:54:33,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:54:33,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:54:33,369 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:54:33,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-20 21:54:33,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 21:54:33,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:54:33,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 71 conjunts are in the unsatisfiable core [2022-07-20 21:54:33,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:54:33,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:54:33,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:33,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-07-20 21:54:33,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:54:33,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:33,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-07-20 21:54:33,881 INFO L356 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2022-07-20 21:54:33,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 44 [2022-07-20 21:54:34,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:34,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2022-07-20 21:54:38,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:38,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:38,376 INFO L356 Elim1Store]: treesize reduction 122, result has 29.9 percent of original size [2022-07-20 21:54:38,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 74 [2022-07-20 21:54:39,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:39,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:39,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:39,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:39,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:39,952 INFO L356 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2022-07-20 21:54:39,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 75 treesize of output 78 [2022-07-20 21:54:43,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:43,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:43,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:43,078 INFO L356 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2022-07-20 21:54:43,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 70 treesize of output 38 [2022-07-20 21:54:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 14 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:54:43,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:54:44,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:54:44,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328219140] [2022-07-20 21:54:44,235 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:54:44,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016559520] [2022-07-20 21:54:44,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016559520] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:54:44,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:54:44,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-07-20 21:54:44,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558785263] [2022-07-20 21:54:44,235 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:54:44,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-20 21:54:44,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:54:44,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-20 21:54:44,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1157, Unknown=14, NotChecked=0, Total=1332 [2022-07-20 21:54:44,236 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 24 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:54:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:54:45,736 INFO L93 Difference]: Finished difference Result 152 states and 170 transitions. [2022-07-20 21:54:45,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-20 21:54:45,737 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 24 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43 [2022-07-20 21:54:45,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:54:45,737 INFO L225 Difference]: With dead ends: 152 [2022-07-20 21:54:45,737 INFO L226 Difference]: Without dead ends: 142 [2022-07-20 21:54:45,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=202, Invalid=1423, Unknown=15, NotChecked=0, Total=1640 [2022-07-20 21:54:45,738 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:54:45,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 373 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 149 Invalid, 0 Unknown, 321 Unchecked, 0.1s Time] [2022-07-20 21:54:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-07-20 21:54:45,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2022-07-20 21:54:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 116 states have (on average 1.1551724137931034) internal successors, (134), 116 states have internal predecessors, (134), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-20 21:54:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 154 transitions. [2022-07-20 21:54:45,761 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 154 transitions. Word has length 43 [2022-07-20 21:54:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:54:45,761 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 154 transitions. [2022-07-20 21:54:45,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 24 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:54:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 154 transitions. [2022-07-20 21:54:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 21:54:45,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:54:45,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:54:45,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-20 21:54:45,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-20 21:54:45,963 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:54:45,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:54:45,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1634733556, now seen corresponding path program 1 times [2022-07-20 21:54:45,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:54:45,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551102614] [2022-07-20 21:54:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:54:45,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:54:45,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:54:45,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112213591] [2022-07-20 21:54:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:54:45,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:54:45,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:54:45,973 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:54:45,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-20 21:54:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:54:46,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 81 conjunts are in the unsatisfiable core [2022-07-20 21:54:46,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:54:46,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:54:46,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:46,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-20 21:54:46,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-07-20 21:54:46,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:54:46,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:54:46,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:46,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:46,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-07-20 21:54:46,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:46,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:46,636 INFO L356 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size [2022-07-20 21:54:46,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 68 [2022-07-20 21:54:47,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:47,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:47,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:54:47,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:47,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 60 [2022-07-20 21:54:48,346 INFO L356 Elim1Store]: treesize reduction 89, result has 31.0 percent of original size [2022-07-20 21:54:48,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 67 treesize of output 93 [2022-07-20 21:54:48,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-20 21:54:48,747 INFO L356 Elim1Store]: treesize reduction 214, result has 15.7 percent of original size [2022-07-20 21:54:48,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 92 treesize of output 67 [2022-07-20 21:54:49,123 INFO L356 Elim1Store]: treesize reduction 104, result has 14.0 percent of original size [2022-07-20 21:54:49,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 48 treesize of output 36 [2022-07-20 21:54:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:54:49,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:55:00,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:55:00,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551102614] [2022-07-20 21:55:00,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:55:00,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112213591] [2022-07-20 21:55:00,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112213591] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:55:00,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:55:00,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-20 21:55:00,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097163589] [2022-07-20 21:55:00,414 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:55:00,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-20 21:55:00,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:55:00,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-20 21:55:00,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1066, Unknown=5, NotChecked=0, Total=1260 [2022-07-20 21:55:00,415 INFO L87 Difference]: Start difference. First operand 137 states and 154 transitions. Second operand has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 23 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:55:00,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:55:00,491 INFO L93 Difference]: Finished difference Result 151 states and 169 transitions. [2022-07-20 21:55:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-20 21:55:00,492 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 23 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43 [2022-07-20 21:55:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:55:00,492 INFO L225 Difference]: With dead ends: 151 [2022-07-20 21:55:00,492 INFO L226 Difference]: Without dead ends: 141 [2022-07-20 21:55:00,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=189, Invalid=1066, Unknown=5, NotChecked=0, Total=1260 [2022-07-20 21:55:00,493 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 20 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:55:00,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 255 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 103 Unchecked, 0.1s Time] [2022-07-20 21:55:00,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-07-20 21:55:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2022-07-20 21:55:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 116 states have (on average 1.1551724137931034) internal successors, (134), 116 states have internal predecessors, (134), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-20 21:55:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 154 transitions. [2022-07-20 21:55:00,514 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 154 transitions. Word has length 43 [2022-07-20 21:55:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:55:00,514 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 154 transitions. [2022-07-20 21:55:00,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 23 states have internal predecessors, (37), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-20 21:55:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 154 transitions. [2022-07-20 21:55:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 21:55:00,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:55:00,514 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:55:00,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-20 21:55:00,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:55:00,715 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:55:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:55:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1217172475, now seen corresponding path program 10 times [2022-07-20 21:55:00,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:55:00,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664658614] [2022-07-20 21:55:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:55:00,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:55:00,725 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:55:00,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809889025] [2022-07-20 21:55:00,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-20 21:55:00,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:55:00,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:55:00,726 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:55:00,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-20 21:55:00,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-20 21:55:00,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:55:00,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-20 21:55:00,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:55:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:55:00,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:55:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 21:55:01,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:55:01,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664658614] [2022-07-20 21:55:01,021 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:55:01,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809889025] [2022-07-20 21:55:01,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809889025] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:55:01,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 21:55:01,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-07-20 21:55:01,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572068924] [2022-07-20 21:55:01,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 21:55:01,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-20 21:55:01,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:55:01,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-20 21:55:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-07-20 21:55:01,022 INFO L87 Difference]: Start difference. First operand 137 states and 154 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:55:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:55:01,441 INFO L93 Difference]: Finished difference Result 207 states and 225 transitions. [2022-07-20 21:55:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-20 21:55:01,442 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-07-20 21:55:01,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:55:01,443 INFO L225 Difference]: With dead ends: 207 [2022-07-20 21:55:01,443 INFO L226 Difference]: Without dead ends: 191 [2022-07-20 21:55:01,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2022-07-20 21:55:01,444 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 177 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 21:55:01,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 193 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 21:55:01,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-20 21:55:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 152. [2022-07-20 21:55:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 129 states have (on average 1.1550387596899225) internal successors, (149), 129 states have internal predecessors, (149), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-20 21:55:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 171 transitions. [2022-07-20 21:55:01,467 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 171 transitions. Word has length 43 [2022-07-20 21:55:01,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:55:01,467 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 171 transitions. [2022-07-20 21:55:01,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:55:01,468 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 171 transitions. [2022-07-20 21:55:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-20 21:55:01,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:55:01,468 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:55:01,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-20 21:55:01,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:55:01,673 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:55:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:55:01,673 INFO L85 PathProgramCache]: Analyzing trace with hash -335060907, now seen corresponding path program 5 times [2022-07-20 21:55:01,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:55:01,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675636049] [2022-07-20 21:55:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:55:01,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:55:01,684 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:55:01,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41884876] [2022-07-20 21:55:01,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-20 21:55:01,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:55:01,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:55:01,685 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:55:01,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-20 21:55:01,815 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-07-20 21:55:01,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:55:01,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-20 21:55:01,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:55:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:55:01,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:55:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-20 21:55:01,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:55:01,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675636049] [2022-07-20 21:55:01,996 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:55:01,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41884876] [2022-07-20 21:55:01,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41884876] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:55:01,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 21:55:01,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-07-20 21:55:01,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227549674] [2022-07-20 21:55:01,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 21:55:01,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-20 21:55:01,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:55:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-20 21:55:01,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-07-20 21:55:01,997 INFO L87 Difference]: Start difference. First operand 152 states and 171 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:55:02,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:55:02,284 INFO L93 Difference]: Finished difference Result 190 states and 206 transitions. [2022-07-20 21:55:02,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-20 21:55:02,284 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-07-20 21:55:02,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:55:02,285 INFO L225 Difference]: With dead ends: 190 [2022-07-20 21:55:02,285 INFO L226 Difference]: Without dead ends: 186 [2022-07-20 21:55:02,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2022-07-20 21:55:02,286 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 104 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 21:55:02,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 177 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 21:55:02,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-20 21:55:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 141. [2022-07-20 21:55:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 120 states have (on average 1.15) internal successors, (138), 120 states have internal predecessors, (138), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-20 21:55:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 158 transitions. [2022-07-20 21:55:02,309 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 158 transitions. Word has length 43 [2022-07-20 21:55:02,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:55:02,309 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 158 transitions. [2022-07-20 21:55:02,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-20 21:55:02,309 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 158 transitions. [2022-07-20 21:55:02,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-20 21:55:02,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:55:02,310 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:55:02,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-20 21:55:02,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-20 21:55:02,513 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:55:02,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:55:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2118573319, now seen corresponding path program 11 times [2022-07-20 21:55:02,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:55:02,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963654435] [2022-07-20 21:55:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:55:02,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:55:02,532 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:55:02,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345870808] [2022-07-20 21:55:02,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-20 21:55:02,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:55:02,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:55:02,541 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:55:02,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-20 21:55:02,709 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-07-20 21:55:02,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:55:02,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-20 21:55:02,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:55:02,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:55:02,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-20 21:55:02,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:55:02,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-07-20 21:55:02,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-07-20 21:55:02,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2022-07-20 21:55:02,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-07-20 21:55:02,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 61 [2022-07-20 21:55:02,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2022-07-20 21:55:02,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:02,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 76 [2022-07-20 21:55:03,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 69 [2022-07-20 21:55:03,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2022-07-20 21:55:03,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2022-07-20 21:55:03,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2022-07-20 21:55:03,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 89 [2022-07-20 21:55:03,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 61 [2022-07-20 21:55:03,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:03,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 124 [2022-07-20 21:55:04,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:04,965 INFO L356 Elim1Store]: treesize reduction 114, result has 39.4 percent of original size [2022-07-20 21:55:04,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 5 case distinctions, treesize of input 102 treesize of output 158 [2022-07-20 21:55:07,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:07,320 INFO L356 Elim1Store]: treesize reduction 130, result has 11.6 percent of original size [2022-07-20 21:55:07,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 27 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 6 case distinctions, treesize of input 150 treesize of output 168 [2022-07-20 21:55:21,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:21,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:21,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:21,598 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:55:21,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 14 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 95 [2022-07-20 21:55:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:55:21,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:55:36,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:55:36,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963654435] [2022-07-20 21:55:36,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-20 21:55:36,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345870808] [2022-07-20 21:55:36,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345870808] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:55:36,190 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-20 21:55:36,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-07-20 21:55:36,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542513048] [2022-07-20 21:55:36,190 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-20 21:55:36,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-20 21:55:36,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:55:36,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-20 21:55:36,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1995, Unknown=16, NotChecked=0, Total=2256 [2022-07-20 21:55:36,191 INFO L87 Difference]: Start difference. First operand 141 states and 158 transitions. Second operand has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 31 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:55:41,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:55:41,929 INFO L93 Difference]: Finished difference Result 182 states and 206 transitions. [2022-07-20 21:55:41,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-20 21:55:41,930 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 31 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-20 21:55:41,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:55:41,930 INFO L225 Difference]: With dead ends: 182 [2022-07-20 21:55:41,931 INFO L226 Difference]: Without dead ends: 178 [2022-07-20 21:55:41,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=308, Invalid=2429, Unknown=19, NotChecked=0, Total=2756 [2022-07-20 21:55:41,932 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 42 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 346 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 21:55:41,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 327 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 396 Invalid, 0 Unknown, 346 Unchecked, 0.7s Time] [2022-07-20 21:55:41,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-07-20 21:55:41,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 157. [2022-07-20 21:55:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 134 states have (on average 1.1567164179104477) internal successors, (155), 134 states have internal predecessors, (155), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-20 21:55:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 177 transitions. [2022-07-20 21:55:41,960 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 177 transitions. Word has length 45 [2022-07-20 21:55:41,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:55:41,960 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 177 transitions. [2022-07-20 21:55:41,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 31 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-20 21:55:41,960 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 177 transitions. [2022-07-20 21:55:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-20 21:55:41,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:55:41,961 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:55:41,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-20 21:55:42,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-20 21:55:42,165 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:55:42,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:55:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash 182249271, now seen corresponding path program 6 times [2022-07-20 21:55:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:55:42,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067126755] [2022-07-20 21:55:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:55:42,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:55:42,175 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-20 21:55:42,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478652736] [2022-07-20 21:55:42,176 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-20 21:55:42,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:55:42,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:55:42,177 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 21:55:42,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-20 21:55:42,389 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-07-20 21:55:42,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:55:42,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 91 conjunts are in the unsatisfiable core [2022-07-20 21:55:42,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:55:42,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-20 21:55:42,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:42,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-20 21:55:42,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-07-20 21:55:42,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:55:42,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-20 21:55:42,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:42,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2022-07-20 21:55:42,516 INFO L356 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-07-20 21:55:42,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-07-20 21:55:42,535 INFO L356 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-07-20 21:55:42,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 58 [2022-07-20 21:55:42,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:42,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 61 [2022-07-20 21:55:42,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2022-07-20 21:55:42,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:42,723 INFO L356 Elim1Store]: treesize reduction 32, result has 28.9 percent of original size [2022-07-20 21:55:42,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 43 [2022-07-20 21:55:42,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:42,751 INFO L356 Elim1Store]: treesize reduction 32, result has 28.9 percent of original size [2022-07-20 21:55:42,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 43 [2022-07-20 21:55:43,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 81 [2022-07-20 21:55:43,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,043 INFO L356 Elim1Store]: treesize reduction 45, result has 22.4 percent of original size [2022-07-20 21:55:43,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 58 [2022-07-20 21:55:43,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,083 INFO L356 Elim1Store]: treesize reduction 83, result has 13.5 percent of original size [2022-07-20 21:55:43,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 118 [2022-07-20 21:55:43,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 101 [2022-07-20 21:55:43,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 63 [2022-07-20 21:55:43,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,482 INFO L356 Elim1Store]: treesize reduction 58, result has 18.3 percent of original size [2022-07-20 21:55:43,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 73 [2022-07-20 21:55:43,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:43,537 INFO L356 Elim1Store]: treesize reduction 58, result has 18.3 percent of original size [2022-07-20 21:55:43,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 73 [2022-07-20 21:55:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:45,536 INFO L356 Elim1Store]: treesize reduction 195, result has 41.6 percent of original size [2022-07-20 21:55:45,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 124 treesize of output 234 [2022-07-20 21:55:48,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:55:48,131 INFO L356 Elim1Store]: treesize reduction 283, result has 25.9 percent of original size [2022-07-20 21:55:48,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 17 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 14 case distinctions, treesize of input 192 treesize of output 272