./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array2_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array2_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 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 10:27:14,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 10:27:14,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 10:27:14,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 10:27:14,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 10:27:14,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 10:27:14,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 10:27:14,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 10:27:14,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 10:27:14,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 10:27:14,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 10:27:14,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 10:27:14,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 10:27:14,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 10:27:14,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 10:27:14,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 10:27:14,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 10:27:14,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 10:27:14,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 10:27:14,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 10:27:14,730 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 10:27:14,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 10:27:14,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 10:27:14,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 10:27:14,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 10:27:14,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 10:27:14,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 10:27:14,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 10:27:14,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 10:27:14,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 10:27:14,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 10:27:14,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 10:27:14,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 10:27:14,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 10:27:14,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 10:27:14,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 10:27:14,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 10:27:14,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 10:27:14,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 10:27:14,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 10:27:14,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 10:27:14,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 10:27:14,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 10:27:14,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 10:27:14,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 10:27:14,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 10:27:14,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 10:27:14,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 10:27:14,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 10:27:14,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 10:27:14,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 10:27:14,782 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 10:27:14,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 10:27:14,783 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 10:27:14,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 10:27:14,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 10:27:14,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 10:27:14,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 10:27:14,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 10:27:14,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 10:27:14,784 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 10:27:14,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 10:27:14,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 10:27:14,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 10:27:14,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 10:27:14,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 10:27:14,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 10:27:14,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 10:27:14,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 10:27:14,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 10:27:14,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 10:27:14,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 10:27:14,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 10:27:14,788 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 10:27:14,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 10:27:14,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 10:27:14,788 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 [2022-07-22 10:27:15,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 10:27:15,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 10:27:15,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 10:27:15,052 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 10:27:15,053 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 10:27:15,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array2_pattern.c [2022-07-22 10:27:15,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc31b9fac/e082e0228f4b48b7888dd8dc1c967637/FLAG80ef9353a [2022-07-22 10:27:15,472 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 10:27:15,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array2_pattern.c [2022-07-22 10:27:15,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc31b9fac/e082e0228f4b48b7888dd8dc1c967637/FLAG80ef9353a [2022-07-22 10:27:15,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc31b9fac/e082e0228f4b48b7888dd8dc1c967637 [2022-07-22 10:27:15,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 10:27:15,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 10:27:15,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 10:27:15,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 10:27:15,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 10:27:15,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:27:15" (1/1) ... [2022-07-22 10:27:15,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667d33bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:15, skipping insertion in model container [2022-07-22 10:27:15,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:27:15" (1/1) ... [2022-07-22 10:27:15,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 10:27:15,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 10:27:16,045 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/array2_pattern.c[1322,1335] [2022-07-22 10:27:16,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 10:27:16,089 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 10:27:16,104 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/array2_pattern.c[1322,1335] [2022-07-22 10:27:16,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 10:27:16,140 INFO L208 MainTranslator]: Completed translation [2022-07-22 10:27:16,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16 WrapperNode [2022-07-22 10:27:16,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 10:27:16,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 10:27:16,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 10:27:16,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 10:27:16,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16" (1/1) ... [2022-07-22 10:27:16,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16" (1/1) ... [2022-07-22 10:27:16,180 INFO L137 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2022-07-22 10:27:16,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 10:27:16,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 10:27:16,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 10:27:16,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 10:27:16,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16" (1/1) ... [2022-07-22 10:27:16,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16" (1/1) ... [2022-07-22 10:27:16,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16" (1/1) ... [2022-07-22 10:27:16,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16" (1/1) ... [2022-07-22 10:27:16,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16" (1/1) ... [2022-07-22 10:27:16,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16" (1/1) ... [2022-07-22 10:27:16,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16" (1/1) ... [2022-07-22 10:27:16,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 10:27:16,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 10:27:16,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 10:27:16,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 10:27:16,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16" (1/1) ... [2022-07-22 10:27:16,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 10:27:16,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:27:16,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 10:27:16,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 10:27:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 10:27:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 10:27:16,292 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 10:27:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 10:27:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 10:27:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 10:27:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 10:27:16,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 10:27:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 10:27:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 10:27:16,346 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 10:27:16,347 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 10:27:16,502 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 10:27:16,506 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 10:27:16,507 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 10:27:16,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:27:16 BoogieIcfgContainer [2022-07-22 10:27:16,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 10:27:16,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 10:27:16,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 10:27:16,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 10:27:16,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:27:15" (1/3) ... [2022-07-22 10:27:16,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a0f440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:27:16, skipping insertion in model container [2022-07-22 10:27:16,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:16" (2/3) ... [2022-07-22 10:27:16,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a0f440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:27:16, skipping insertion in model container [2022-07-22 10:27:16,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:27:16" (3/3) ... [2022-07-22 10:27:16,518 INFO L111 eAbstractionObserver]: Analyzing ICFG array2_pattern.c [2022-07-22 10:27:16,530 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 10:27:16,531 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 10:27:16,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 10:27:16,589 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@5481e8a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@c67bc5e [2022-07-22 10:27:16,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 10:27:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:16,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-22 10:27:16,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:27:16,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:27:16,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:27:16,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:27:16,614 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2022-07-22 10:27:16,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:27:16,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476769984] [2022-07-22 10:27:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:16,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:27:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:27:16,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 10:27:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:27:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:27:16,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:27:16,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476769984] [2022-07-22 10:27:16,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476769984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:27:16,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:27:16,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 10:27:16,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640974628] [2022-07-22 10:27:16,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:27:16,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 10:27:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:27:16,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 10:27:16,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 10:27:16,801 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 10:27:16,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:27:16,818 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-07-22 10:27:16,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 10:27:16,820 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-22 10:27:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:27:16,830 INFO L225 Difference]: With dead ends: 47 [2022-07-22 10:27:16,830 INFO L226 Difference]: Without dead ends: 21 [2022-07-22 10:27:16,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 10:27:16,834 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:27:16,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:27:16,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-22 10:27:16,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-22 10:27:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-07-22 10:27:16,860 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-07-22 10:27:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:27:16,860 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-22 10:27:16,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 10:27:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-07-22 10:27:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-22 10:27:16,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:27:16,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:27:16,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 10:27:16,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:27:16,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:27:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2022-07-22 10:27:16,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:27:16,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428846093] [2022-07-22 10:27:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:16,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:27:16,906 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:27:16,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090040245] [2022-07-22 10:27:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:16,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:27:16,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:27:16,909 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:27:16,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 10:27:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:27:16,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 10:27:16,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:27:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:27:17,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 10:27:17,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:27:17,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428846093] [2022-07-22 10:27:17,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:27:17,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090040245] [2022-07-22 10:27:17,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090040245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:27:17,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:27:17,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 10:27:17,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338289401] [2022-07-22 10:27:17,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:27:17,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 10:27:17,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:27:17,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 10:27:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 10:27:17,075 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:27:17,094 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-07-22 10:27:17,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 10:27:17,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-07-22 10:27:17,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:27:17,096 INFO L225 Difference]: With dead ends: 26 [2022-07-22 10:27:17,096 INFO L226 Difference]: Without dead ends: 22 [2022-07-22 10:27:17,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 10:27:17,097 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:27:17,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:27:17,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-22 10:27:17,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-22 10:27:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-22 10:27:17,102 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2022-07-22 10:27:17,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:27:17,103 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-22 10:27:17,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-22 10:27:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 10:27:17,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:27:17,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:27:17,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 10:27:17,323 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 [2022-07-22 10:27:17,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:27:17,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:27:17,324 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2022-07-22 10:27:17,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:27:17,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037207375] [2022-07-22 10:27:17,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:17,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:27:17,352 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:27:17,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406054697] [2022-07-22 10:27:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:17,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:27:17,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:27:17,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:27:17,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 10:27:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:27:17,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 10:27:17,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:27:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:27:17,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 10:27:17,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:27:17,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037207375] [2022-07-22 10:27:17,515 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:27:17,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406054697] [2022-07-22 10:27:17,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406054697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:27:17,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:27:17,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 10:27:17,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117711170] [2022-07-22 10:27:17,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:27:17,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 10:27:17,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:27:17,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 10:27:17,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 10:27:17,519 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:17,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:27:17,588 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-07-22 10:27:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 10:27:17,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 24 [2022-07-22 10:27:17,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:27:17,589 INFO L225 Difference]: With dead ends: 41 [2022-07-22 10:27:17,589 INFO L226 Difference]: Without dead ends: 25 [2022-07-22 10:27:17,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 10:27:17,591 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:27:17,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 59 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:27:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-22 10:27:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-07-22 10:27:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-22 10:27:17,602 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2022-07-22 10:27:17,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:27:17,602 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-22 10:27:17,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-22 10:27:17,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-22 10:27:17,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:27:17,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:27:17,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 10:27:17,827 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 [2022-07-22 10:27:17,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:27:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:27:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2022-07-22 10:27:17,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:27:17,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469142269] [2022-07-22 10:27:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:17,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:27:17,872 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:27:17,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807416232] [2022-07-22 10:27:17,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:17,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:27:17,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:27:17,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:27:17,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 10:27:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:27:17,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-22 10:27:17,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:27:18,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 10:27:18,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:18,059 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 [2022-07-22 10:27:18,066 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 [2022-07-22 10:27:18,078 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 [2022-07-22 10:27:18,084 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 [2022-07-22 10:27:18,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:18,613 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 175 treesize of output 166 [2022-07-22 10:27:18,625 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 166 treesize of output 158 [2022-07-22 10:27:18,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:18,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:18,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:18,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 201 [2022-07-22 10:27:18,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:18,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2022-07-22 10:27:18,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:18,718 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 0 case distinctions, treesize of input 133 treesize of output 27 [2022-07-22 10:27:18,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:18,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:18,882 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 39 treesize of output 14 [2022-07-22 10:27:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:27:18,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:27:22,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:27:22,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469142269] [2022-07-22 10:27:22,125 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:27:22,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807416232] [2022-07-22 10:27:22,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807416232] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:27:22,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:27:22,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-07-22 10:27:22,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119447358] [2022-07-22 10:27:22,126 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:27:22,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 10:27:22,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:27:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 10:27:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=233, Unknown=9, NotChecked=0, Total=306 [2022-07-22 10:27:22,128 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:22,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:27:22,195 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-07-22 10:27:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 10:27:22,197 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 states have internal predecessors, (22), 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 26 [2022-07-22 10:27:22,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:27:22,198 INFO L225 Difference]: With dead ends: 43 [2022-07-22 10:27:22,199 INFO L226 Difference]: Without dead ends: 39 [2022-07-22 10:27:22,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=64, Invalid=233, Unknown=9, NotChecked=0, Total=306 [2022-07-22 10:27:22,201 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:27:22,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 127 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2022-07-22 10:27:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-22 10:27:22,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-07-22 10:27:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 10:27:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-07-22 10:27:22,211 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 26 [2022-07-22 10:27:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:27:22,211 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-07-22 10:27:22,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-07-22 10:27:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 10:27:22,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:27:22,213 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] [2022-07-22 10:27:22,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 10:27:22,433 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 [2022-07-22 10:27:22,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:27:22,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:27:22,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1336652411, now seen corresponding path program 2 times [2022-07-22 10:27:22,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:27:22,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625761130] [2022-07-22 10:27:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:22,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:27:22,459 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:27:22,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116486392] [2022-07-22 10:27:22,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:27:22,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:27:22,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:27:22,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:27:22,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 10:27:22,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:27:22,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:27:22,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 10:27:22,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:27:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:27:22,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:27:22,640 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:27:22,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:27:22,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625761130] [2022-07-22 10:27:22,641 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:27:22,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116486392] [2022-07-22 10:27:22,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116486392] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:27:22,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:27:22,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-22 10:27:22,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221848167] [2022-07-22 10:27:22,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:27:22,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 10:27:22,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:27:22,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 10:27:22,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 10:27:22,643 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:27:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:27:22,733 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2022-07-22 10:27:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 10:27:22,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 28 [2022-07-22 10:27:22,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:27:22,735 INFO L225 Difference]: With dead ends: 67 [2022-07-22 10:27:22,735 INFO L226 Difference]: Without dead ends: 57 [2022-07-22 10:27:22,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-22 10:27:22,736 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 52 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:27:22,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 82 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:27:22,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-22 10:27:22,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2022-07-22 10:27:22,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 10:27:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2022-07-22 10:27:22,744 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 28 [2022-07-22 10:27:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:27:22,744 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2022-07-22 10:27:22,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:27:22,745 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2022-07-22 10:27:22,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 10:27:22,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:27:22,746 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] [2022-07-22 10:27:22,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 10:27:22,963 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 [2022-07-22 10:27:22,963 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:27:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:27:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash -178408891, now seen corresponding path program 3 times [2022-07-22 10:27:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:27:22,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845625340] [2022-07-22 10:27:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:22,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:27:22,985 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:27:22,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354176116] [2022-07-22 10:27:22,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 10:27:22,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:27:22,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:27:22,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:27:23,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 10:27:23,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-22 10:27:23,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:27:23,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 10:27:23,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:27:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:27:23,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:27:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:27:23,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:27:23,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845625340] [2022-07-22 10:27:23,178 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:27:23,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354176116] [2022-07-22 10:27:23,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354176116] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:27:23,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:27:23,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-22 10:27:23,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790720978] [2022-07-22 10:27:23,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:27:23,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 10:27:23,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:27:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 10:27:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 10:27:23,181 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:27:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:27:23,296 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-07-22 10:27:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 10:27:23,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 28 [2022-07-22 10:27:23,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:27:23,297 INFO L225 Difference]: With dead ends: 60 [2022-07-22 10:27:23,297 INFO L226 Difference]: Without dead ends: 56 [2022-07-22 10:27:23,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-22 10:27:23,298 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 48 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:27:23,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 83 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:27:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-22 10:27:23,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2022-07-22 10:27:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 10:27:23,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2022-07-22 10:27:23,310 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 28 [2022-07-22 10:27:23,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:27:23,314 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2022-07-22 10:27:23,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:27:23,315 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2022-07-22 10:27:23,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 10:27:23,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:27:23,316 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] [2022-07-22 10:27:23,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 10:27:23,535 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 [2022-07-22 10:27:23,536 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:27:23,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:27:23,536 INFO L85 PathProgramCache]: Analyzing trace with hash 400980999, now seen corresponding path program 4 times [2022-07-22 10:27:23,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:27:23,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937640029] [2022-07-22 10:27:23,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:23,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:27:23,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:27:23,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20633022] [2022-07-22 10:27:23,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 10:27:23,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:27:23,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:27:23,557 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:27:23,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 10:27:23,697 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 10:27:23,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:27:23,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-22 10:27:23,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:27:23,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 10:27:23,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:23,739 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 [2022-07-22 10:27:23,742 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 [2022-07-22 10:27:23,746 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 [2022-07-22 10:27:23,751 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 [2022-07-22 10:27:23,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:23,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:23,828 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 [2022-07-22 10:27:24,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:24,306 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 193 treesize of output 180 [2022-07-22 10:27:24,312 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 175 treesize of output 165 [2022-07-22 10:27:24,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:24,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:24,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:24,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:24,350 INFO L356 Elim1Store]: treesize reduction 130, result has 0.8 percent of original size [2022-07-22 10:27:24,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 216 [2022-07-22 10:27:24,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:24,417 INFO L356 Elim1Store]: treesize reduction 75, result has 25.7 percent of original size [2022-07-22 10:27:24,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 33 treesize of output 45 [2022-07-22 10:27:24,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-22 10:27:25,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 300 treesize of output 256 [2022-07-22 10:27:25,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:25,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:25,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:25,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:25,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:25,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:25,399 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 10:27:25,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 515 treesize of output 436 [2022-07-22 10:27:25,428 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 10:27:25,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 468 treesize of output 458 [2022-07-22 10:27:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:27:25,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:27:26,036 WARN L833 $PredicateComparison]: unable to prove that (or (let ((.cse5 (<= (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296) 2147483647))) (and (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_265 (Array Int Int))) (= (let ((.cse0 (let ((.cse4 (+ (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse4 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse4) (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse2 .cse3 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse2 .cse3))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4))))) 0)) (not .cse5)) (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_265 (Array Int Int))) (= (let ((.cse7 (let ((.cse10 (+ (- 17179869184) (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse10 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse10) (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse9 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse8 .cse9 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse8 .cse9))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse7) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse6 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse6 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse7 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4))))) 0)) .cse5))) (not (< 1 c_~ARR_SIZE~0))) is different from false [2022-07-22 10:27:37,051 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 10:27:37,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:27:37,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937640029] [2022-07-22 10:27:37,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:27:37,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20633022] [2022-07-22 10:27:37,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20633022] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:27:37,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:27:37,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-07-22 10:27:37,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332503904] [2022-07-22 10:27:37,058 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:27:37,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 10:27:37,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:27:37,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 10:27:37,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=426, Unknown=5, NotChecked=42, Total=552 [2022-07-22 10:27:37,059 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 16 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:38,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:27:38,971 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2022-07-22 10:27:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 10:27:38,971 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 16 states have internal predecessors, (26), 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 30 [2022-07-22 10:27:38,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:27:38,972 INFO L225 Difference]: With dead ends: 79 [2022-07-22 10:27:38,972 INFO L226 Difference]: Without dead ends: 75 [2022-07-22 10:27:38,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=100, Invalid=548, Unknown=6, NotChecked=48, Total=702 [2022-07-22 10:27:38,974 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 10:27:38,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 170 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 117 Unchecked, 0.8s Time] [2022-07-22 10:27:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-22 10:27:38,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2022-07-22 10:27:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 10:27:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2022-07-22 10:27:38,988 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 30 [2022-07-22 10:27:38,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:27:38,989 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2022-07-22 10:27:38,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 16 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:27:38,989 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2022-07-22 10:27:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 10:27:38,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:27:38,995 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] [2022-07-22 10:27:39,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 10:27:39,218 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 [2022-07-22 10:27:39,218 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:27:39,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:27:39,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1151083191, now seen corresponding path program 5 times [2022-07-22 10:27:39,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:27:39,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061703677] [2022-07-22 10:27:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:39,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:27:39,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:27:39,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703796798] [2022-07-22 10:27:39,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 10:27:39,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:27:39,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:27:39,255 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:27:39,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 10:27:39,326 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-22 10:27:39,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:27:39,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 10:27:39,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:27:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:27:40,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:27:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:27:40,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:27:40,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061703677] [2022-07-22 10:27:40,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:27:40,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703796798] [2022-07-22 10:27:40,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703796798] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:27:40,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:27:40,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-22 10:27:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541278357] [2022-07-22 10:27:40,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:27:40,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 10:27:40,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:27:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 10:27:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 10:27:40,820 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:27:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:27:42,527 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-07-22 10:27:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 10:27:42,528 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 32 [2022-07-22 10:27:42,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:27:42,529 INFO L225 Difference]: With dead ends: 103 [2022-07-22 10:27:42,529 INFO L226 Difference]: Without dead ends: 91 [2022-07-22 10:27:42,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-07-22 10:27:42,530 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 10:27:42,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 106 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 10:27:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-22 10:27:42,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2022-07-22 10:27:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 10:27:42,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2022-07-22 10:27:42,543 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 32 [2022-07-22 10:27:42,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:27:42,544 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2022-07-22 10:27:42,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:27:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2022-07-22 10:27:42,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 10:27:42,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:27:42,545 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] [2022-07-22 10:27:42,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 10:27:42,747 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 [2022-07-22 10:27:42,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:27:42,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:27:42,748 INFO L85 PathProgramCache]: Analyzing trace with hash -475590135, now seen corresponding path program 6 times [2022-07-22 10:27:42,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:27:42,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811652703] [2022-07-22 10:27:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:42,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:27:42,768 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:27:42,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888046711] [2022-07-22 10:27:42,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 10:27:42,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:27:42,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:27:42,774 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:27:42,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 10:27:42,910 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-22 10:27:42,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:27:42,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 10:27:42,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:27:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:27:43,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:27:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:27:44,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:27:44,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811652703] [2022-07-22 10:27:44,416 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:27:44,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888046711] [2022-07-22 10:27:44,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888046711] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:27:44,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:27:44,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-22 10:27:44,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285400116] [2022-07-22 10:27:44,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:27:44,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 10:27:44,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:27:44,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 10:27:44,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 10:27:44,418 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:27:46,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:27:46,420 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2022-07-22 10:27:46,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 10:27:46,420 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 32 [2022-07-22 10:27:46,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:27:46,421 INFO L225 Difference]: With dead ends: 90 [2022-07-22 10:27:46,421 INFO L226 Difference]: Without dead ends: 86 [2022-07-22 10:27:46,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-22 10:27:46,422 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 53 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 10:27:46,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 164 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 10:27:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-22 10:27:46,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2022-07-22 10:27:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 10:27:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2022-07-22 10:27:46,433 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 32 [2022-07-22 10:27:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:27:46,433 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2022-07-22 10:27:46,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:27:46,433 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2022-07-22 10:27:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 10:27:46,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:27:46,435 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:27:46,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-22 10:27:46,639 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 [2022-07-22 10:27:46,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:27:46,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:27:46,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2113032700, now seen corresponding path program 1 times [2022-07-22 10:27:46,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:27:46,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719900110] [2022-07-22 10:27:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:46,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:27:46,662 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:27:46,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588805349] [2022-07-22 10:27:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:27:46,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:27:46,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:27:46,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:27:46,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 10:27:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:27:46,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-22 10:27:46,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:27:47,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 10:27:47,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:47,415 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 [2022-07-22 10:27:47,435 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 [2022-07-22 10:27:47,470 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 [2022-07-22 10:27:47,504 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 [2022-07-22 10:27:50,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:50,358 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 179 treesize of output 170 [2022-07-22 10:27:50,380 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 170 treesize of output 162 [2022-07-22 10:27:50,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:50,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:50,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:50,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 201 [2022-07-22 10:27:50,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:50,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-07-22 10:27:50,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:50,644 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 0 case distinctions, treesize of input 133 treesize of output 27 [2022-07-22 10:27:51,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:51,910 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 175 treesize of output 166 [2022-07-22 10:27:51,934 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 166 treesize of output 158 [2022-07-22 10:27:51,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:51,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:51,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:51,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 201 [2022-07-22 10:27:51,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:51,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2022-07-22 10:27:52,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:27:52,054 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 0 case distinctions, treesize of input 106 treesize of output 20 [2022-07-22 10:27:53,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:53,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:27:53,005 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 46 treesize of output 19 [2022-07-22 10:27:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 10:27:53,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:27:54,210 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (<= (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296) 2147483647))) (and (or (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_449 (Array Int Int))) (= (let ((.cse0 (let ((.cse3 (+ (- 17179869184) (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_447) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse3 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_449) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse3)))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse1 .cse2 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse1 .cse2))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0)) .cse4) (or (not .cse4) (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_449 (Array Int Int))) (= (let ((.cse7 (let ((.cse8 (+ (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_447) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse8 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_449) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse8)))))) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse6 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse5 .cse6 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse5 .cse6))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse7) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 0))))) is different from false [2022-07-22 10:27:59,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:27:59,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719900110] [2022-07-22 10:27:59,375 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:27:59,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588805349] [2022-07-22 10:27:59,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588805349] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:27:59,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:27:59,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-07-22 10:27:59,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168958421] [2022-07-22 10:27:59,375 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:27:59,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 10:27:59,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:27:59,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 10:27:59,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=4, NotChecked=32, Total=342 [2022-07-22 10:27:59,380 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 13 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:01,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:28:01,948 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-07-22 10:28:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 10:28:01,948 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 13 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-22 10:28:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:28:01,949 INFO L225 Difference]: With dead ends: 81 [2022-07-22 10:28:01,949 INFO L226 Difference]: Without dead ends: 57 [2022-07-22 10:28:01,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=4, NotChecked=42, Total=552 [2022-07-22 10:28:01,950 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 10:28:01,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 132 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 50 Unchecked, 0.6s Time] [2022-07-22 10:28:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-22 10:28:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-07-22 10:28:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-22 10:28:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2022-07-22 10:28:01,959 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 34 [2022-07-22 10:28:01,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:28:01,959 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2022-07-22 10:28:01,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 13 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2022-07-22 10:28:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 10:28:01,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:28:01,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:28:01,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 10:28:02,179 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 [2022-07-22 10:28:02,179 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:28:02,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:28:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 7 times [2022-07-22 10:28:02,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:28:02,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508780487] [2022-07-22 10:28:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:28:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:28:02,201 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:28:02,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111827259] [2022-07-22 10:28:02,211 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 10:28:02,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:28:02,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:28:02,213 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:28:02,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 10:28:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:28:02,394 WARN L261 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-22 10:28:02,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:28:02,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 10:28:02,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:02,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-22 10:28:02,890 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 [2022-07-22 10:28:02,909 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 [2022-07-22 10:28:03,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:03,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:03,628 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 [2022-07-22 10:28:04,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:04,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:04,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:04,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:04,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:04,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:04,772 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 [2022-07-22 10:28:09,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:09,070 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 211 treesize of output 194 [2022-07-22 10:28:09,108 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 184 treesize of output 172 [2022-07-22 10:28:09,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:09,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:09,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:09,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:09,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:09,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:09,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:09,273 INFO L244 Elim1Store]: Index analysis took 139 ms [2022-07-22 10:28:09,350 INFO L356 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2022-07-22 10:28:09,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 148 treesize of output 226 [2022-07-22 10:28:09,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:09,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:09,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:09,862 INFO L356 Elim1Store]: treesize reduction 115, result has 26.3 percent of original size [2022-07-22 10:28:09,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 40 treesize of output 63 [2022-07-22 10:28:09,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:10,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:10,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:10,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:10,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:10,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:10,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:10,140 INFO L244 Elim1Store]: Index analysis took 154 ms [2022-07-22 10:28:10,630 INFO L356 Elim1Store]: treesize reduction 203, result has 21.3 percent of original size [2022-07-22 10:28:10,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 150 treesize of output 102 [2022-07-22 10:28:17,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:28:17,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:17,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:17,721 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:28:17,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:17,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:17,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:28:17,917 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 10:28:17,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 4 disjoint index pairs (out of 55 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 192 treesize of output 137 [2022-07-22 10:28:20,086 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:28:20,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:28:34,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:28:34,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508780487] [2022-07-22 10:28:34,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:28:34,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111827259] [2022-07-22 10:28:34,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111827259] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:28:34,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:28:34,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-07-22 10:28:34,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823723522] [2022-07-22 10:28:34,039 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:28:34,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 10:28:34,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:28:34,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 10:28:34,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=948, Unknown=3, NotChecked=0, Total=1122 [2022-07-22 10:28:34,041 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 24 states, 24 states have (on average 1.25) internal successors, (30), 22 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:38,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:28:38,199 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2022-07-22 10:28:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 10:28:38,200 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 22 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-07-22 10:28:38,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:28:38,201 INFO L225 Difference]: With dead ends: 92 [2022-07-22 10:28:38,201 INFO L226 Difference]: Without dead ends: 88 [2022-07-22 10:28:38,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=213, Invalid=1116, Unknown=3, NotChecked=0, Total=1332 [2022-07-22 10:28:38,203 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 10:28:38,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 174 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 154 Invalid, 0 Unknown, 125 Unchecked, 2.2s Time] [2022-07-22 10:28:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-22 10:28:38,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2022-07-22 10:28:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-22 10:28:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2022-07-22 10:28:38,216 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 34 [2022-07-22 10:28:38,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:28:38,217 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2022-07-22 10:28:38,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.25) internal successors, (30), 22 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:28:38,217 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2022-07-22 10:28:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 10:28:38,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:28:38,217 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:28:38,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 10:28:38,417 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 [2022-07-22 10:28:38,418 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:28:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:28:38,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1565541619, now seen corresponding path program 8 times [2022-07-22 10:28:38,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:28:38,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226854619] [2022-07-22 10:28:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:28:38,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:28:38,447 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:28:38,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727864119] [2022-07-22 10:28:38,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:28:38,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:28:38,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:28:38,449 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) [2022-07-22 10:28:38,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 10:28:38,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:28:38,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:28:38,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 10:28:38,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:28:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:28:40,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:28:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:28:41,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:28:41,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226854619] [2022-07-22 10:28:41,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:28:41,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727864119] [2022-07-22 10:28:41,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727864119] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:28:41,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:28:41,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-22 10:28:41,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434743090] [2022-07-22 10:28:41,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:28:41,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 10:28:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:28:41,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 10:28:41,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-22 10:28:41,614 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:28:45,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:28:45,168 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2022-07-22 10:28:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 10:28:45,172 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-07-22 10:28:45,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:28:45,173 INFO L225 Difference]: With dead ends: 113 [2022-07-22 10:28:45,173 INFO L226 Difference]: Without dead ends: 99 [2022-07-22 10:28:45,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-07-22 10:28:45,173 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 86 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 10:28:45,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 139 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 10:28:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-22 10:28:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2022-07-22 10:28:45,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 10:28:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-07-22 10:28:45,185 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 36 [2022-07-22 10:28:45,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:28:45,185 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-07-22 10:28:45,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:28:45,186 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-07-22 10:28:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 10:28:45,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:28:45,186 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:28:45,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 10:28:45,388 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 [2022-07-22 10:28:45,389 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:28:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:28:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash -956776499, now seen corresponding path program 9 times [2022-07-22 10:28:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:28:45,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801942930] [2022-07-22 10:28:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:28:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:28:45,403 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:28:45,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681863747] [2022-07-22 10:28:45,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 10:28:45,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:28:45,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:28:45,405 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) [2022-07-22 10:28:45,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 10:28:45,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-22 10:28:45,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:28:45,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 10:28:45,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:28:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:28:47,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:28:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:28:48,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:28:48,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801942930] [2022-07-22 10:28:48,621 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:28:48,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681863747] [2022-07-22 10:28:48,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681863747] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:28:48,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:28:48,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-22 10:28:48,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104550755] [2022-07-22 10:28:48,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:28:48,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 10:28:48,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:28:48,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 10:28:48,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-22 10:28:48,623 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:28:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:28:52,461 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2022-07-22 10:28:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 10:28:52,462 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-07-22 10:28:52,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:28:52,462 INFO L225 Difference]: With dead ends: 98 [2022-07-22 10:28:52,462 INFO L226 Difference]: Without dead ends: 94 [2022-07-22 10:28:52,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-07-22 10:28:52,468 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 52 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 10:28:52,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 167 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 10:28:52,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-22 10:28:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2022-07-22 10:28:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 states have internal predecessors, (74), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 10:28:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2022-07-22 10:28:52,480 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 36 [2022-07-22 10:28:52,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:28:52,480 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2022-07-22 10:28:52,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 10:28:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2022-07-22 10:28:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 10:28:52,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:28:52,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:28:52,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 10:28:52,687 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 [2022-07-22 10:28:52,687 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:28:52,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:28:52,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2067066744, now seen corresponding path program 2 times [2022-07-22 10:28:52,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:28:52,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958387081] [2022-07-22 10:28:52,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:28:52,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:28:52,699 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:28:52,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727485589] [2022-07-22 10:28:52,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:28:52,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:28:52,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:28:52,701 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) [2022-07-22 10:28:52,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 10:28:52,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:28:52,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:28:52,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 88 conjunts are in the unsatisfiable core [2022-07-22 10:28:52,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:28:53,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 10:28:53,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:53,346 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 [2022-07-22 10:28:53,399 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 [2022-07-22 10:28:53,426 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 [2022-07-22 10:28:54,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:54,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:54,567 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 [2022-07-22 10:28:59,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:59,763 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 197 treesize of output 184 [2022-07-22 10:28:59,795 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 179 treesize of output 169 [2022-07-22 10:28:59,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:59,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:59,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:59,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:28:59,928 INFO L244 Elim1Store]: Index analysis took 101 ms [2022-07-22 10:28:59,985 INFO L356 Elim1Store]: treesize reduction 130, result has 0.8 percent of original size [2022-07-22 10:28:59,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 216 [2022-07-22 10:29:00,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:00,662 INFO L356 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-07-22 10:29:00,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 37 treesize of output 49 [2022-07-22 10:29:00,701 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-22 10:29:27,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:27,229 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 502 treesize of output 425 [2022-07-22 10:29:27,269 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 439 treesize of output 409 [2022-07-22 10:29:27,290 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:29:27,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:27,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:27,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:27,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:27,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:27,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:27,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:27,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:27,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:29:27,504 INFO L244 Elim1Store]: Index analysis took 145 ms [2022-07-22 10:29:28,097 INFO L356 Elim1Store]: treesize reduction 387, result has 14.4 percent of original size [2022-07-22 10:29:28,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 891 treesize of output 862 [2022-07-22 10:29:28,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:28,345 INFO L244 Elim1Store]: Index analysis took 179 ms [2022-07-22 10:29:29,956 INFO L356 Elim1Store]: treesize reduction 128, result has 33.3 percent of original size [2022-07-22 10:29:29,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 case distinctions, treesize of input 652 treesize of output 692 [2022-07-22 10:29:31,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:31,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:31,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:31,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:31,946 INFO L244 Elim1Store]: Index analysis took 135 ms [2022-07-22 10:29:32,665 INFO L356 Elim1Store]: treesize reduction 142, result has 32.1 percent of original size [2022-07-22 10:29:32,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 423 treesize of output 347 [2022-07-22 10:29:46,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:29:46,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:29:48,370 INFO L356 Elim1Store]: treesize reduction 46, result has 70.3 percent of original size [2022-07-22 10:29:48,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 14 case distinctions, treesize of input 180 treesize of output 186 [2022-07-22 10:29:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:29:57,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:30:04,198 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse8 (<= (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296) 2147483647))) (and (or (forall ((|v_ULTIMATE.start_main_~count~0#1_106| Int)) (or (not (< |v_ULTIMATE.start_main_~count~0#1_106| c_~ARR_SIZE~0)) (= (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse7 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse6 .cse7 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse6 .cse7))))))) (let ((.cse1 (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse5 (+ (- 17179869184) (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store .cse4 .cse5 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse4 .cse5)))))) (let ((.cse0 (select (store .cse3 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse2 (* 4 |v_ULTIMATE.start_main_~count~0#1_106|))) (+ (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 (+ .cse2 |c_ULTIMATE.start_main_~#array1~0#1.offset|)) (select .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))))) 0) (< (+ |v_ULTIMATE.start_main_~count~0#1_106| 1) c_~ARR_SIZE~0))) .cse8) (or (forall ((|v_ULTIMATE.start_main_~count~0#1_106| Int)) (or (not (< |v_ULTIMATE.start_main_~count~0#1_106| c_~ARR_SIZE~0)) (= (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse15 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse16 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse15 .cse16 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse15 .cse16))))))) (let ((.cse9 (let ((.cse13 (select .cse12 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse14 (+ (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store .cse13 .cse14 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse13 .cse14)))))) (let ((.cse10 (* 4 |v_ULTIMATE.start_main_~count~0#1_106|)) (.cse11 (select (store .cse12 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse9) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse9 (+ .cse10 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (select .cse11 (+ .cse10 |c_ULTIMATE.start_main_~#array1~0#1.offset|)) (select .cse11 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse9 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 0) (< (+ |v_ULTIMATE.start_main_~count~0#1_106| 1) c_~ARR_SIZE~0))) (not .cse8)))) is different from false [2022-07-22 10:30:20,912 WARN L233 SmtUtils]: Spent 14.48s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 10:30:20,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:30:20,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958387081] [2022-07-22 10:30:20,913 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:30:20,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727485589] [2022-07-22 10:30:20,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727485589] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:30:20,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:30:20,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-07-22 10:30:20,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792143226] [2022-07-22 10:30:20,914 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:30:20,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 10:30:20,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:30:20,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 10:30:20,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=726, Unknown=5, NotChecked=56, Total=930 [2022-07-22 10:30:20,915 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 20 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 10:30:30,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:30:30,436 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2022-07-22 10:30:30,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 10:30:30,436 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 20 states have internal predecessors, (32), 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 38 [2022-07-22 10:30:30,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:30:30,437 INFO L225 Difference]: With dead ends: 103 [2022-07-22 10:30:30,437 INFO L226 Difference]: Without dead ends: 93 [2022-07-22 10:30:30,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 67.3s TimeCoverageRelationStatistics Valid=205, Invalid=1054, Unknown=5, NotChecked=68, Total=1332 [2022-07-22 10:30:30,438 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 10:30:30,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 248 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 102 Invalid, 0 Unknown, 187 Unchecked, 1.4s Time] [2022-07-22 10:30:30,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-22 10:30:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2022-07-22 10:30:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-22 10:30:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2022-07-22 10:30:30,461 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 38 [2022-07-22 10:30:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:30:30,461 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2022-07-22 10:30:30,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 20 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 10:30:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2022-07-22 10:30:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 10:30:30,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:30:30,464 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:30:30,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 10:30:30,679 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 [2022-07-22 10:30:30,679 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:30:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:30:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash -285980785, now seen corresponding path program 10 times [2022-07-22 10:30:30,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:30:30,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538567880] [2022-07-22 10:30:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:30:30,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:30:30,698 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:30:30,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923393434] [2022-07-22 10:30:30,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 10:30:30,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:30:30,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:30:30,712 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) [2022-07-22 10:30:30,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 10:30:31,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 10:30:31,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:30:31,016 WARN L261 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 102 conjunts are in the unsatisfiable core [2022-07-22 10:30:31,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:30:31,237 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 10:30:31,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:31,794 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 [2022-07-22 10:30:31,845 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 [2022-07-22 10:30:31,872 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 [2022-07-22 10:30:32,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:32,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:32,902 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 [2022-07-22 10:30:34,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:34,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:34,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:34,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:34,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:34,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:34,337 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 72 treesize of output 67 [2022-07-22 10:30:35,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:35,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:35,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:35,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:35,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:35,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:35,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:35,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:36,039 INFO L244 Elim1Store]: Index analysis took 144 ms [2022-07-22 10:30:36,039 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 96 treesize of output 97 [2022-07-22 10:30:43,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,550 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 229 treesize of output 208 [2022-07-22 10:30:43,579 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 179 [2022-07-22 10:30:43,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:43,845 INFO L244 Elim1Store]: Index analysis took 236 ms [2022-07-22 10:30:43,954 INFO L356 Elim1Store]: treesize reduction 270, result has 0.4 percent of original size [2022-07-22 10:30:43,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 155 treesize of output 236 [2022-07-22 10:30:43,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:44,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:44,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:44,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:44,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:44,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:30:44,176 INFO L244 Elim1Store]: Index analysis took 189 ms [2022-07-22 10:30:44,995 INFO L356 Elim1Store]: treesize reduction 155, result has 26.5 percent of original size [2022-07-22 10:30:44,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 47 treesize of output 81 [2022-07-22 10:30:45,122 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-22 10:31:09,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 920 treesize of output 794 [2022-07-22 10:31:09,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:09,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:09,841 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:31:09,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:09,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:31:09,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:09,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:09,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:09,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:09,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:09,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:09,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:09,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:31:10,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:31:10,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:31:10,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:31:10,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 10:31:10,234 INFO L244 Elim1Store]: Index analysis took 103 ms [2022-07-22 10:31:10,637 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 10:31:10,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 1084 treesize of output 1098 [2022-07-22 10:31:10,788 INFO L244 Elim1Store]: Index analysis took 102 ms [2022-07-22 10:31:11,132 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 10:31:11,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1197 treesize of output 1165 [2022-07-22 10:31:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:24,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:31:30,174 WARN L833 $PredicateComparison]: unable to prove that (or (not (< 3 c_~ARR_SIZE~0)) (let ((.cse0 (<= (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296) 2147483647))) (and (or (not .cse0) (forall ((v_ArrVal_877 (Array Int Int)) (v_ArrVal_871 (Array Int Int))) (= (let ((.cse2 (let ((.cse5 (+ (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_877) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse5 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_871) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse5) (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse4 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse3 .cse4 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse3 .cse4))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4))))) 0))) (or (forall ((v_ArrVal_877 (Array Int Int)) (v_ArrVal_871 (Array Int Int))) (= (let ((.cse6 (let ((.cse10 (+ (- 17179869184) (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_877) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse10 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_871) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse10)))))) (let ((.cse7 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse9 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse8 .cse9 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse8 .cse9))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse6) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse6 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse6 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse7 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse7 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse6 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse6 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse7 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse7 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12))))) 0)) .cse0)))) is different from false [2022-07-22 10:31:36,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:36,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538567880] [2022-07-22 10:31:36,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:31:36,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923393434] [2022-07-22 10:31:36,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923393434] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:31:36,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:31:36,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-22 10:31:36,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690723489] [2022-07-22 10:31:36,066 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:31:36,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 10:31:36,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:36,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 10:31:36,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1107, Unknown=1, NotChecked=68, Total=1332 [2022-07-22 10:31:36,068 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 25 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:31:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:31:40,357 INFO L93 Difference]: Finished difference Result 122 states and 133 transitions. [2022-07-22 10:31:40,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 10:31:40,358 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 25 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-07-22 10:31:40,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:31:40,359 INFO L225 Difference]: With dead ends: 122 [2022-07-22 10:31:40,359 INFO L226 Difference]: Without dead ends: 118 [2022-07-22 10:31:40,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=183, Invalid=1302, Unknown=1, NotChecked=74, Total=1560 [2022-07-22 10:31:40,360 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 10:31:40,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 222 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 189 Invalid, 0 Unknown, 201 Unchecked, 2.4s Time] [2022-07-22 10:31:40,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-22 10:31:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 101. [2022-07-22 10:31:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 84 states have internal predecessors, (93), 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) [2022-07-22 10:31:40,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2022-07-22 10:31:40,373 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 38 [2022-07-22 10:31:40,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:31:40,374 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2022-07-22 10:31:40,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 25 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:31:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2022-07-22 10:31:40,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-22 10:31:40,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:40,374 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:40,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 10:31:40,575 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 [2022-07-22 10:31:40,575 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash 103605969, now seen corresponding path program 11 times [2022-07-22 10:31:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:40,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032976848] [2022-07-22 10:31:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:40,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:40,594 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:31:40,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781019096] [2022-07-22 10:31:40,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 10:31:40,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:40,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:31:40,596 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) [2022-07-22 10:31:40,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 10:31:40,729 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-22 10:31:40,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:31:40,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 10:31:40,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:31:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:43,070 INFO L328 TraceCheckSpWp]: Computing backward predicates...