./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ifeqn2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ifeqn2.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 cb71614531ba069deddebdade1f57f90be50d3de3732c63efbb92b9f6b8c62e1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 01:36:52,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 01:36:52,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 01:36:52,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 01:36:52,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 01:36:52,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 01:36:52,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 01:36:52,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 01:36:52,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 01:36:52,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 01:36:52,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 01:36:52,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 01:36:52,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 01:36:52,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 01:36:52,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 01:36:52,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 01:36:52,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 01:36:52,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 01:36:52,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 01:36:52,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 01:36:52,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 01:36:52,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 01:36:52,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 01:36:52,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 01:36:52,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 01:36:52,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 01:36:52,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 01:36:52,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 01:36:52,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 01:36:52,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 01:36:52,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 01:36:52,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 01:36:52,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 01:36:52,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 01:36:52,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 01:36:52,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 01:36:52,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 01:36:52,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 01:36:52,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 01:36:52,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 01:36:52,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 01:36:52,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 01:36:52,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 01:36:52,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 01:36:52,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 01:36:52,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 01:36:52,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 01:36:52,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 01:36:52,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 01:36:52,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 01:36:52,915 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 01:36:52,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 01:36:52,916 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 01:36:52,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 01:36:52,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 01:36:52,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 01:36:52,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 01:36:52,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 01:36:52,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 01:36:52,916 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 01:36:52,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 01:36:52,917 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 01:36:52,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 01:36:52,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 01:36:52,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 01:36:52,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 01:36:52,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 01:36:52,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 01:36:52,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 01:36:52,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 01:36:52,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 01:36:52,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 01:36:52,919 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 01:36:52,919 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 01:36:52,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 01:36:52,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 01:36:52,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb71614531ba069deddebdade1f57f90be50d3de3732c63efbb92b9f6b8c62e1 [2021-12-17 01:36:53,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 01:36:53,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 01:36:53,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 01:36:53,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 01:36:53,155 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 01:36:53,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ifeqn2.c [2021-12-17 01:36:53,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab41e641/ab3a7f32ba254fc4af7f99e70dce732e/FLAG87e31c1af [2021-12-17 01:36:53,541 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 01:36:53,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn2.c [2021-12-17 01:36:53,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab41e641/ab3a7f32ba254fc4af7f99e70dce732e/FLAG87e31c1af [2021-12-17 01:36:53,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab41e641/ab3a7f32ba254fc4af7f99e70dce732e [2021-12-17 01:36:53,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 01:36:53,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 01:36:53,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 01:36:53,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 01:36:53,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 01:36:53,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:36:53" (1/1) ... [2021-12-17 01:36:53,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63404311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:53, skipping insertion in model container [2021-12-17 01:36:53,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:36:53" (1/1) ... [2021-12-17 01:36:53,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 01:36:53,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 01:36:54,083 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn2.c[589,602] [2021-12-17 01:36:54,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 01:36:54,100 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 01:36:54,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn2.c[589,602] [2021-12-17 01:36:54,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 01:36:54,126 INFO L208 MainTranslator]: Completed translation [2021-12-17 01:36:54,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54 WrapperNode [2021-12-17 01:36:54,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 01:36:54,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 01:36:54,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 01:36:54,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 01:36:54,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54" (1/1) ... [2021-12-17 01:36:54,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54" (1/1) ... [2021-12-17 01:36:54,150 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-12-17 01:36:54,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 01:36:54,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 01:36:54,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 01:36:54,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 01:36:54,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54" (1/1) ... [2021-12-17 01:36:54,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54" (1/1) ... [2021-12-17 01:36:54,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54" (1/1) ... [2021-12-17 01:36:54,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54" (1/1) ... [2021-12-17 01:36:54,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54" (1/1) ... [2021-12-17 01:36:54,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54" (1/1) ... [2021-12-17 01:36:54,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54" (1/1) ... [2021-12-17 01:36:54,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 01:36:54,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 01:36:54,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 01:36:54,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 01:36:54,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54" (1/1) ... [2021-12-17 01:36:54,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 01:36:54,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:36:54,215 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) [2021-12-17 01:36:54,247 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 [2021-12-17 01:36:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 01:36:54,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 01:36:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 01:36:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-17 01:36:54,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 01:36:54,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 01:36:54,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 01:36:54,310 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 01:36:54,311 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 01:36:54,429 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 01:36:54,433 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 01:36:54,434 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-17 01:36:54,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:36:54 BoogieIcfgContainer [2021-12-17 01:36:54,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 01:36:54,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 01:36:54,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 01:36:54,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 01:36:54,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 01:36:53" (1/3) ... [2021-12-17 01:36:54,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51faa1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:36:54, skipping insertion in model container [2021-12-17 01:36:54,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:36:54" (2/3) ... [2021-12-17 01:36:54,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51faa1fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:36:54, skipping insertion in model container [2021-12-17 01:36:54,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:36:54" (3/3) ... [2021-12-17 01:36:54,443 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn2.c [2021-12-17 01:36:54,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 01:36:54,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 01:36:54,483 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 01:36:54,490 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 01:36:54,490 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 01:36:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-17 01:36:54,513 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:36:54,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:36:54,514 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:36:54,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:36:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2021-12-17 01:36:54,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:36:54,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672305667] [2021-12-17 01:36:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:36:54,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:36:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 01:36:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:36:54,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:36:54,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672305667] [2021-12-17 01:36:54,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672305667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 01:36:54,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 01:36:54,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 01:36:54,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284221491] [2021-12-17 01:36:54,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 01:36:54,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 01:36:54,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:36:54,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 01:36:54,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 01:36:54,732 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:54,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:36:54,741 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-12-17 01:36:54,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 01:36:54,743 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-17 01:36:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:36:54,747 INFO L225 Difference]: With dead ends: 42 [2021-12-17 01:36:54,747 INFO L226 Difference]: Without dead ends: 19 [2021-12-17 01:36:54,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 01:36:54,751 INFO L933 BasicCegarLoop]: 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 [2021-12-17 01:36:54,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 01:36:54,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-17 01:36:54,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-17 01:36:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-12-17 01:36:54,770 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-12-17 01:36:54,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:36:54,783 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-12-17 01:36:54,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:54,784 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-12-17 01:36:54,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-17 01:36:54,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:36:54,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:36:54,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 01:36:54,785 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:36:54,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:36:54,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2021-12-17 01:36:54,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:36:54,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633194688] [2021-12-17 01:36:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:36:54,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:36:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 01:36:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:36:54,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:36:54,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633194688] [2021-12-17 01:36:54,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633194688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 01:36:54,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 01:36:54,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 01:36:54,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828413] [2021-12-17 01:36:54,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 01:36:54,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 01:36:54,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:36:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 01:36:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 01:36:54,841 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:36:54,910 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-12-17 01:36:54,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 01:36:54,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-17 01:36:54,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:36:54,914 INFO L225 Difference]: With dead ends: 45 [2021-12-17 01:36:54,914 INFO L226 Difference]: Without dead ends: 31 [2021-12-17 01:36:54,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 01:36:54,915 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:36:54,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 01:36:54,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-17 01:36:54,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-12-17 01:36:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-12-17 01:36:54,920 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-12-17 01:36:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:36:54,920 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-12-17 01:36:54,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-12-17 01:36:54,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-17 01:36:54,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:36:54,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:36:54,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 01:36:54,922 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:36:54,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:36:54,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2021-12-17 01:36:54,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:36:54,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145622799] [2021-12-17 01:36:54,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:36:54,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:36:54,940 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:36:54,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131857519] [2021-12-17 01:36:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:36:54,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:36:54,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:36:54,945 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) [2021-12-17 01:36:54,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 01:36:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 01:36:54,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 01:36:54,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:36:55,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:36:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 01:36:55,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 01:36:55,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:36:55,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145622799] [2021-12-17 01:36:55,121 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:36:55,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131857519] [2021-12-17 01:36:55,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131857519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 01:36:55,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 01:36:55,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 01:36:55,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254959508] [2021-12-17 01:36:55,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 01:36:55,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 01:36:55,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:36:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 01:36:55,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 01:36:55,124 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:55,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:36:55,189 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-12-17 01:36:55,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 01:36:55,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-17 01:36:55,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:36:55,190 INFO L225 Difference]: With dead ends: 40 [2021-12-17 01:36:55,190 INFO L226 Difference]: Without dead ends: 38 [2021-12-17 01:36:55,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-17 01:36:55,191 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 62 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 [2021-12-17 01:36:55,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 01:36:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-17 01:36:55,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2021-12-17 01:36:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:55,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-12-17 01:36:55,196 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2021-12-17 01:36:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:36:55,196 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-12-17 01:36:55,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-12-17 01:36:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-17 01:36:55,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:36:55,197 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:36:55,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 01:36:55,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:36:55,414 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:36:55,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:36:55,416 INFO L85 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times [2021-12-17 01:36:55,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:36:55,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335337562] [2021-12-17 01:36:55,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:36:55,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:36:55,457 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:36:55,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1824970550] [2021-12-17 01:36:55,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:36:55,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:36:55,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:36:55,471 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) [2021-12-17 01:36:55,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 01:36:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 01:36:55,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 01:36:55,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:36:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:36:55,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:36:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:36:55,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:36:55,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335337562] [2021-12-17 01:36:55,726 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:36:55,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824970550] [2021-12-17 01:36:55,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824970550] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:36:55,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:36:55,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-17 01:36:55,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232997922] [2021-12-17 01:36:55,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:36:55,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 01:36:55,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:36:55,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 01:36:55,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-17 01:36:55,742 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:55,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:36:55,852 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-12-17 01:36:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 01:36:55,853 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-17 01:36:55,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:36:55,854 INFO L225 Difference]: With dead ends: 70 [2021-12-17 01:36:55,854 INFO L226 Difference]: Without dead ends: 43 [2021-12-17 01:36:55,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-17 01:36:55,855 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:36:55,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 01:36:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-17 01:36:55,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-12-17 01:36:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-12-17 01:36:55,859 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2021-12-17 01:36:55,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:36:55,859 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-12-17 01:36:55,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:55,859 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-12-17 01:36:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 01:36:55,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:36:55,860 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:36:55,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 01:36:56,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-17 01:36:56,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:36:56,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:36:56,078 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times [2021-12-17 01:36:56,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:36:56,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066826510] [2021-12-17 01:36:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:36:56,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:36:56,119 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:36:56,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277021180] [2021-12-17 01:36:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:36:56,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:36:56,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:36:56,120 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) [2021-12-17 01:36:56,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 01:36:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 01:36:56,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-17 01:36:56,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:36:56,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:36:56,318 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-17 01:36:56,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-17 01:36:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 01:36:56,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:36:56,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-12-17 01:36:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 01:36:56,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:36:56,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066826510] [2021-12-17 01:36:56,571 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:36:56,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277021180] [2021-12-17 01:36:56,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277021180] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:36:56,571 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:36:56,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2021-12-17 01:36:56,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271821132] [2021-12-17 01:36:56,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:36:56,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 01:36:56,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:36:56,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 01:36:56,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-17 01:36:56,573 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:36:56,723 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2021-12-17 01:36:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 01:36:56,724 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-17 01:36:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:36:56,725 INFO L225 Difference]: With dead ends: 73 [2021-12-17 01:36:56,725 INFO L226 Difference]: Without dead ends: 61 [2021-12-17 01:36:56,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-12-17 01:36:56,726 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:36:56,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 71 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 80 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2021-12-17 01:36:56,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-17 01:36:56,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 38. [2021-12-17 01:36:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2021-12-17 01:36:56,730 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 24 [2021-12-17 01:36:56,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:36:56,730 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2021-12-17 01:36:56,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:36:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2021-12-17 01:36:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 01:36:56,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:36:56,731 INFO L514 BasicCegarLoop]: 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] [2021-12-17 01:36:56,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 01:36:56,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:36:56,935 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:36:56,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:36:56,935 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times [2021-12-17 01:36:56,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:36:56,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336383109] [2021-12-17 01:36:56,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:36:56,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:36:56,962 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:36:56,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696532492] [2021-12-17 01:36:56,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:36:56,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:36:56,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:36:56,983 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) [2021-12-17 01:36:56,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 01:36:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 01:36:57,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-17 01:36:57,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:36:57,059 INFO L388 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 [2021-12-17 01:36:57,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:36:57,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:36:57,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-17 01:36:57,226 INFO L388 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 19 treesize of output 18 [2021-12-17 01:36:57,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:36:57,291 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-17 01:36:57,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2021-12-17 01:36:57,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:36:57,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:36:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:36:57,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:36:57,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336383109] [2021-12-17 01:36:57,974 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:36:57,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696532492] [2021-12-17 01:36:57,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696532492] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:36:57,975 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:36:57,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2021-12-17 01:36:57,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65913393] [2021-12-17 01:36:57,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:36:57,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-17 01:36:57,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:36:57,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-17 01:36:57,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-12-17 01:36:57,976 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:37:17,425 INFO L93 Difference]: Finished difference Result 158 states and 187 transitions. [2021-12-17 01:37:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-17 01:37:17,425 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-17 01:37:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:37:17,427 INFO L225 Difference]: With dead ends: 158 [2021-12-17 01:37:17,428 INFO L226 Difference]: Without dead ends: 127 [2021-12-17 01:37:17,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=359, Invalid=1360, Unknown=3, NotChecked=0, Total=1722 [2021-12-17 01:37:17,429 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 171 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 01:37:17,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 178 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 290 Invalid, 0 Unknown, 73 Unchecked, 0.4s Time] [2021-12-17 01:37:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-17 01:37:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 78. [2021-12-17 01:37:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 77 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:17,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2021-12-17 01:37:17,437 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 28 [2021-12-17 01:37:17,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:37:17,451 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2021-12-17 01:37:17,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2021-12-17 01:37:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 01:37:17,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:37:17,452 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:37:17,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 01:37:17,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:17,653 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:37:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:37:17,653 INFO L85 PathProgramCache]: Analyzing trace with hash -849177916, now seen corresponding path program 2 times [2021-12-17 01:37:17,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:37:17,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395064901] [2021-12-17 01:37:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:37:17,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:37:17,673 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:37:17,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999399169] [2021-12-17 01:37:17,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 01:37:17,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:17,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:37:17,675 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) [2021-12-17 01:37:17,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 01:37:17,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 01:37:17,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:37:17,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 01:37:17,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:37:17,781 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-17 01:37:17,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 01:37:17,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:37:17,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395064901] [2021-12-17 01:37:17,782 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:37:17,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999399169] [2021-12-17 01:37:17,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999399169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 01:37:17,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 01:37:17,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 01:37:17,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598922460] [2021-12-17 01:37:17,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 01:37:17,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 01:37:17,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:37:17,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 01:37:17,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-17 01:37:17,784 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:17,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:37:17,855 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2021-12-17 01:37:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 01:37:17,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-17 01:37:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:37:17,858 INFO L225 Difference]: With dead ends: 121 [2021-12-17 01:37:17,858 INFO L226 Difference]: Without dead ends: 80 [2021-12-17 01:37:17,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-17 01:37:17,860 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:37:17,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 01:37:17,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-17 01:37:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2021-12-17 01:37:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 65 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2021-12-17 01:37:17,880 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 30 [2021-12-17 01:37:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:37:17,881 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2021-12-17 01:37:17,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:17,881 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2021-12-17 01:37:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 01:37:17,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:37:17,882 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:37:17,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 01:37:18,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:18,102 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:37:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:37:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1242204926, now seen corresponding path program 3 times [2021-12-17 01:37:18,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:37:18,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311666112] [2021-12-17 01:37:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:37:18,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:37:18,119 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:37:18,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397006994] [2021-12-17 01:37:18,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 01:37:18,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:18,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:37:18,121 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) [2021-12-17 01:37:18,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 01:37:18,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-17 01:37:18,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:37:18,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-17 01:37:18,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:37:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-17 01:37:18,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:37:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-17 01:37:18,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:37:18,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311666112] [2021-12-17 01:37:18,571 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:37:18,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397006994] [2021-12-17 01:37:18,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397006994] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:37:18,571 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:37:18,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-12-17 01:37:18,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246351736] [2021-12-17 01:37:18,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:37:18,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 01:37:18,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:37:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 01:37:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-12-17 01:37:18,573 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:37:18,859 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2021-12-17 01:37:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 01:37:18,860 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-17 01:37:18,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:37:18,861 INFO L225 Difference]: With dead ends: 116 [2021-12-17 01:37:18,861 INFO L226 Difference]: Without dead ends: 96 [2021-12-17 01:37:18,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=243, Invalid=627, Unknown=0, NotChecked=0, Total=870 [2021-12-17 01:37:18,862 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 221 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:37:18,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 66 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 01:37:18,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-17 01:37:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 63. [2021-12-17 01:37:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.1290322580645162) internal successors, (70), 62 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:18,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2021-12-17 01:37:18,866 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 30 [2021-12-17 01:37:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:37:18,866 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2021-12-17 01:37:18,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:18,866 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2021-12-17 01:37:18,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-17 01:37:18,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:37:18,867 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:37:18,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 01:37:19,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:19,068 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:37:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:37:19,068 INFO L85 PathProgramCache]: Analyzing trace with hash 877615566, now seen corresponding path program 2 times [2021-12-17 01:37:19,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:37:19,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610127897] [2021-12-17 01:37:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:37:19,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:37:19,080 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:37:19,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180814003] [2021-12-17 01:37:19,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 01:37:19,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:19,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:37:19,089 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) [2021-12-17 01:37:19,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 01:37:19,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 01:37:19,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:37:19,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 01:37:19,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:37:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 01:37:19,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:37:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 01:37:19,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:37:19,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610127897] [2021-12-17 01:37:19,344 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:37:19,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180814003] [2021-12-17 01:37:19,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180814003] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:37:19,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:37:19,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-17 01:37:19,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490068599] [2021-12-17 01:37:19,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:37:19,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 01:37:19,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:37:19,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 01:37:19,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 01:37:19,347 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:37:19,495 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2021-12-17 01:37:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 01:37:19,495 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-17 01:37:19,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:37:19,496 INFO L225 Difference]: With dead ends: 102 [2021-12-17 01:37:19,496 INFO L226 Difference]: Without dead ends: 77 [2021-12-17 01:37:19,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-17 01:37:19,497 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 91 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:37:19,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 62 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 01:37:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-17 01:37:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2021-12-17 01:37:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2021-12-17 01:37:19,501 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 32 [2021-12-17 01:37:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:37:19,501 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2021-12-17 01:37:19,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2021-12-17 01:37:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-17 01:37:19,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:37:19,502 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:37:19,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 01:37:19,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:19,708 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:37:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:37:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1847758638, now seen corresponding path program 4 times [2021-12-17 01:37:19,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:37:19,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195159628] [2021-12-17 01:37:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:37:19,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:37:19,735 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:37:19,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982212040] [2021-12-17 01:37:19,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-17 01:37:19,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:19,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:37:19,737 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) [2021-12-17 01:37:19,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 01:37:19,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-17 01:37:19,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:37:19,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 01:37:19,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:37:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:37:19,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:37:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:37:19,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:37:19,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195159628] [2021-12-17 01:37:19,970 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:37:19,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982212040] [2021-12-17 01:37:19,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982212040] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:37:19,971 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:37:19,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-17 01:37:19,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482447940] [2021-12-17 01:37:19,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:37:19,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 01:37:19,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:37:19,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 01:37:19,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-17 01:37:19,975 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:20,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:37:20,191 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2021-12-17 01:37:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 01:37:20,191 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-17 01:37:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:37:20,192 INFO L225 Difference]: With dead ends: 116 [2021-12-17 01:37:20,192 INFO L226 Difference]: Without dead ends: 103 [2021-12-17 01:37:20,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-12-17 01:37:20,193 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 145 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:37:20,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 96 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 01:37:20,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-17 01:37:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 64. [2021-12-17 01:37:20,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-12-17 01:37:20,197 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 33 [2021-12-17 01:37:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:37:20,197 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-12-17 01:37:20,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-12-17 01:37:20,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-17 01:37:20,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:37:20,198 INFO L514 BasicCegarLoop]: 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] [2021-12-17 01:37:20,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-17 01:37:20,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-17 01:37:20,411 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:37:20,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:37:20,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1646708229, now seen corresponding path program 3 times [2021-12-17 01:37:20,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:37:20,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923479191] [2021-12-17 01:37:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:37:20,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:37:20,425 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:37:20,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1629048863] [2021-12-17 01:37:20,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 01:37:20,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:20,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:37:20,434 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) [2021-12-17 01:37:20,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-17 01:37:20,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-17 01:37:20,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:37:20,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-17 01:37:20,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:37:20,664 INFO L388 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 [2021-12-17 01:37:20,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:37:20,763 INFO L388 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 56 treesize of output 49 [2021-12-17 01:37:20,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:20,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:20,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:20,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-17 01:37:20,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:20,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-12-17 01:37:20,864 INFO L388 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 56 treesize of output 49 [2021-12-17 01:37:20,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:20,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:20,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:20,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-17 01:37:20,885 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 01:37:20,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:20,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-12-17 01:37:21,055 INFO L388 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 19 treesize of output 18 [2021-12-17 01:37:21,156 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-17 01:37:21,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 137 treesize of output 125 [2021-12-17 01:37:21,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:37:21,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 153 [2021-12-17 01:37:21,220 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 01:37:21,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 48 [2021-12-17 01:37:21,395 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-17 01:37:21,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 70 [2021-12-17 01:37:21,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 83 [2021-12-17 01:37:21,426 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 01:37:21,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:21,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 39 [2021-12-17 01:37:21,681 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-17 01:37:21,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 52 treesize of output 32 [2021-12-17 01:37:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:37:21,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:37:23,902 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-17 01:37:23,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 228 treesize of output 176 [2021-12-17 01:37:23,911 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-17 01:37:23,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 164 [2021-12-17 01:37:23,921 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-17 01:37:23,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 132 [2021-12-17 01:37:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:37:24,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:37:24,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923479191] [2021-12-17 01:37:24,004 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:37:24,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629048863] [2021-12-17 01:37:24,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629048863] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:37:24,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:37:24,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 39 [2021-12-17 01:37:24,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114020497] [2021-12-17 01:37:24,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:37:24,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-17 01:37:24,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:37:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-17 01:37:24,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1161, Unknown=1, NotChecked=0, Total=1482 [2021-12-17 01:37:24,006 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 39 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:37:37,339 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2021-12-17 01:37:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-17 01:37:37,339 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-17 01:37:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:37:37,340 INFO L225 Difference]: With dead ends: 98 [2021-12-17 01:37:37,340 INFO L226 Difference]: Without dead ends: 96 [2021-12-17 01:37:37,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=442, Invalid=1719, Unknown=1, NotChecked=0, Total=2162 [2021-12-17 01:37:37,341 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 59 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 01:37:37,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 112 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 192 Invalid, 0 Unknown, 440 Unchecked, 0.2s Time] [2021-12-17 01:37:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-17 01:37:37,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2021-12-17 01:37:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1294117647058823) internal successors, (96), 85 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2021-12-17 01:37:37,346 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 34 [2021-12-17 01:37:37,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:37:37,346 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2021-12-17 01:37:37,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 39 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2021-12-17 01:37:37,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-17 01:37:37,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:37:37,347 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:37:37,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-17 01:37:37,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:37,552 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:37:37,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:37:37,553 INFO L85 PathProgramCache]: Analyzing trace with hash -653025448, now seen corresponding path program 4 times [2021-12-17 01:37:37,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:37:37,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966575995] [2021-12-17 01:37:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:37:37,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:37:37,565 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:37:37,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141595072] [2021-12-17 01:37:37,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-17 01:37:37,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:37,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:37:37,567 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) [2021-12-17 01:37:37,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-17 01:37:37,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-17 01:37:37,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:37:37,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 01:37:37,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:37:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 01:37:37,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:37:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 01:37:37,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:37:37,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966575995] [2021-12-17 01:37:37,829 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:37:37,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141595072] [2021-12-17 01:37:37,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141595072] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:37:37,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:37:37,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-12-17 01:37:37,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117177867] [2021-12-17 01:37:37,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:37:37,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 01:37:37,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:37:37,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 01:37:37,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-12-17 01:37:37,831 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:37:38,075 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2021-12-17 01:37:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 01:37:38,076 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-17 01:37:38,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:37:38,077 INFO L225 Difference]: With dead ends: 120 [2021-12-17 01:37:38,077 INFO L226 Difference]: Without dead ends: 99 [2021-12-17 01:37:38,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2021-12-17 01:37:38,078 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 144 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 01:37:38,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 100 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 01:37:38,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-17 01:37:38,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 61. [2021-12-17 01:37:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 60 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:38,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-12-17 01:37:38,083 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 34 [2021-12-17 01:37:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:37:38,085 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-12-17 01:37:38,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:38,085 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-12-17 01:37:38,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-17 01:37:38,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:37:38,086 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:37:38,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-17 01:37:38,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-17 01:37:38,303 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:37:38,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:37:38,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1259217666, now seen corresponding path program 5 times [2021-12-17 01:37:38,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:37:38,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975806133] [2021-12-17 01:37:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:37:38,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:37:38,323 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:37:38,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784147053] [2021-12-17 01:37:38,323 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-17 01:37:38,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:38,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:37:38,336 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) [2021-12-17 01:37:38,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-17 01:37:39,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-17 01:37:39,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:37:39,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-17 01:37:39,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:37:39,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:37:39,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-12-17 01:37:39,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:39,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:39,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:39,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-17 01:37:39,335 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 01:37:39,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:39,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-12-17 01:37:39,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-12-17 01:37:39,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:39,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:39,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:39,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-17 01:37:39,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:39,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2021-12-17 01:37:39,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:39,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-17 01:37:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 01:37:39,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:37:39,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-12-17 01:37:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-17 01:37:39,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:37:39,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975806133] [2021-12-17 01:37:39,974 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:37:39,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784147053] [2021-12-17 01:37:39,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784147053] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:37:39,975 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:37:39,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-12-17 01:37:39,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768725476] [2021-12-17 01:37:39,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:37:39,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-17 01:37:39,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:37:39,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-17 01:37:39,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-12-17 01:37:39,976 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:40,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:37:40,280 INFO L93 Difference]: Finished difference Result 109 states and 116 transitions. [2021-12-17 01:37:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 01:37:40,281 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-17 01:37:40,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:37:40,281 INFO L225 Difference]: With dead ends: 109 [2021-12-17 01:37:40,281 INFO L226 Difference]: Without dead ends: 107 [2021-12-17 01:37:40,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2021-12-17 01:37:40,282 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 101 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 01:37:40,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 130 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 203 Invalid, 0 Unknown, 76 Unchecked, 0.2s Time] [2021-12-17 01:37:40,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-17 01:37:40,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 73. [2021-12-17 01:37:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0972222222222223) internal successors, (79), 72 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2021-12-17 01:37:40,286 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 36 [2021-12-17 01:37:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:37:40,286 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2021-12-17 01:37:40,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:37:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2021-12-17 01:37:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-17 01:37:40,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:37:40,287 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:37:40,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-17 01:37:40,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-17 01:37:40,498 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:37:40,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:37:40,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1129715953, now seen corresponding path program 5 times [2021-12-17 01:37:40,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:37:40,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591001437] [2021-12-17 01:37:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:37:40,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:37:40,512 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:37:40,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424109483] [2021-12-17 01:37:40,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-17 01:37:40,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:37:40,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:37:40,514 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) [2021-12-17 01:37:40,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-17 01:37:40,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-17 01:37:40,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:37:40,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-17 01:37:40,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:37:40,783 INFO L388 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 [2021-12-17 01:37:40,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:37:40,882 INFO L388 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 108 treesize of output 97 [2021-12-17 01:37:40,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:37:40,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 131 [2021-12-17 01:37:40,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 76 [2021-12-17 01:37:40,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:40,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2021-12-17 01:37:41,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-17 01:37:41,116 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-17 01:37:41,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 149 treesize of output 135 [2021-12-17 01:37:41,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:37:41,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 156 [2021-12-17 01:37:41,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 29 [2021-12-17 01:37:41,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:37:41,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:41,282 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-12-17 01:37:41,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 56 [2021-12-17 01:37:41,674 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-12-17 01:37:41,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 82 treesize of output 42 [2021-12-17 01:37:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:37:41,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:37:51,044 INFO L354 Elim1Store]: treesize reduction 74, result has 28.2 percent of original size [2021-12-17 01:37:51,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 14596 treesize of output 11168 [2021-12-17 01:37:51,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:37:51,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 857 treesize of output 813 [2021-12-17 01:37:51,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:37:51,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:37:51,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:37:51,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 302 [2021-12-17 01:37:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:37:51,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:37:51,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591001437] [2021-12-17 01:37:51,296 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:37:51,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424109483] [2021-12-17 01:37:51,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424109483] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:37:51,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:37:51,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 34 [2021-12-17 01:37:51,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797453149] [2021-12-17 01:37:51,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:37:51,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-17 01:37:51,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:37:51,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-17 01:37:51,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 01:37:51,297 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:38:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:38:01,890 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2021-12-17 01:38:01,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-17 01:38:01,890 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-17 01:38:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:38:01,890 INFO L225 Difference]: With dead ends: 94 [2021-12-17 01:38:01,890 INFO L226 Difference]: Without dead ends: 70 [2021-12-17 01:38:01,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=262, Invalid=1378, Unknown=0, NotChecked=0, Total=1640 [2021-12-17 01:38:01,891 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 01:38:01,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 132 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 302 Invalid, 0 Unknown, 150 Unchecked, 2.4s Time] [2021-12-17 01:38:01,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-17 01:38:01,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 51. [2021-12-17 01:38:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:38:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-12-17 01:38:01,895 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 38 [2021-12-17 01:38:01,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:38:01,895 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-12-17 01:38:01,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 34 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:38:01,895 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-12-17 01:38:01,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-17 01:38:01,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:38:01,898 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:38:01,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-17 01:38:02,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-17 01:38:02,107 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:38:02,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:38:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash 173090424, now seen corresponding path program 6 times [2021-12-17 01:38:02,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:38:02,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128535431] [2021-12-17 01:38:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:38:02,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:38:02,122 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:38:02,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806702892] [2021-12-17 01:38:02,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-17 01:38:02,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:38:02,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:38:02,132 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) [2021-12-17 01:38:02,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-17 01:38:02,590 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-17 01:38:02,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:38:02,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-17 01:38:02,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:38:02,611 INFO L388 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 [2021-12-17 01:38:02,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:38:02,689 INFO L388 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 108 treesize of output 97 [2021-12-17 01:38:02,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:38:02,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 131 [2021-12-17 01:38:02,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 54 [2021-12-17 01:38:02,729 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 01:38:02,820 INFO L388 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 123 treesize of output 108 [2021-12-17 01:38:02,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:38:02,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 146 [2021-12-17 01:38:02,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 72 [2021-12-17 01:38:02,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:02,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 53 [2021-12-17 01:38:03,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,126 INFO L388 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 54 treesize of output 56 [2021-12-17 01:38:03,253 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-17 01:38:03,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 175 treesize of output 155 [2021-12-17 01:38:03,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:38:03,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 156 [2021-12-17 01:38:03,271 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 01:38:03,285 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 01:38:03,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 65 [2021-12-17 01:38:03,498 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-17 01:38:03,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 198 [2021-12-17 01:38:03,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 199 [2021-12-17 01:38:03,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 157 [2021-12-17 01:38:03,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:38:03,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:38:03,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:38:03,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 01:38:03,739 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-12-17 01:38:03,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 113 treesize of output 96 [2021-12-17 01:38:04,047 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-12-17 01:38:04,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 123 treesize of output 55 [2021-12-17 01:38:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:38:04,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:38:35,509 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse50 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4294967295) 4294967296))) (let ((.cse9 (< 2147483647 .cse50)) (.cse0 (<= .cse50 2147483647)) (.cse24 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (and (or .cse0 (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse8 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4294967295) 4294967296) 8))) (let ((.cse5 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (.cse3 (select .cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse8 (- 34359738368)))) (.cse6 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse8 (- 34359738368))))) (let ((.cse4 (store .cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse5) (+ .cse3 .cse6))) (.cse2 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8))) (let ((.cse1 (store .cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2) v_ArrVal_486))) (or (= (select (store .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296) 8)) v_ArrVal_487) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) 5) (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse1) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (< v_ArrVal_486 (+ .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse4) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse5)) .cse6))))))))) (or .cse9 (forall ((v_ArrVal_486 Int)) (or (< v_ArrVal_486 (let ((.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse14 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4294967295) 4294967296) 8))) (let ((.cse12 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse14))) (.cse13 (select .cse10 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse14)))) (+ (let ((.cse11 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store .cse10 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse11) (+ .cse12 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse11))) .cse12 .cse13)))) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (< 2147483647 .cse15) (forall ((v_ArrVal_487 Int)) (let ((.cse17 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8))) (let ((.cse16 (store (let ((.cse18 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (let ((.cse19 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4294967295) 4294967296) 8))) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse19)) (select .cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse19)))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse17) v_ArrVal_486))) (or (= (select (store .cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296) 8)) v_ArrVal_487) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) 5) (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse16) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|))))))))) (or (forall ((v_ArrVal_487 Int)) (let ((.cse21 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8))) (let ((.cse20 (store (let ((.cse22 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse22 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (let ((.cse23 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4294967295) 4294967296) 8))) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse23)) (select .cse22 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse23)))))) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse21 (- 34359738368)) v_ArrVal_486))) (or (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse20) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse21 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))))) (= (select (store .cse20 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296) 8)) v_ArrVal_487) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) 5))))) (<= .cse15 2147483647)))))))) (< 2147483647 .cse24)) (or (and (or (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse31 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse32 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4294967295) 4294967296) 8))) (let ((.cse30 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (.cse27 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse32))) (.cse28 (select .cse31 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse32)))) (let ((.cse29 (store .cse31 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse30 (- 34359738368)) (+ .cse27 .cse28))) (.cse26 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8))) (let ((.cse25 (store .cse29 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse26 (- 34359738368)) v_ArrVal_486))) (or (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse25) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse26 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))))) (< v_ArrVal_486 (+ .cse27 .cse28 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse29) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse30 (- 34359738368))))) (= (select (store .cse25 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296) 8)) v_ArrVal_487) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) 5))))))) .cse9) (or (let ((.cse41 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse39 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse40 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4294967295) 4294967296) 8))) (let ((.cse37 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (.cse35 (select .cse39 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse40 (- 34359738368)))) (.cse38 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse40 (- 34359738368))))) (let ((.cse36 (store .cse39 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse37 (- 34359738368)) (+ .cse35 .cse38))) (.cse34 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8))) (let ((.cse33 (store .cse36 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse34) v_ArrVal_486))) (or (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse33) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse34 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (= (select (store .cse33 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296) 8)) v_ArrVal_487) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) 5) (< v_ArrVal_486 (+ .cse35 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse36) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse37 (- 34359738368))) .cse38)))))))) (< 2147483647 .cse41)) (or (<= .cse41 2147483647) (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse48 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse49 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4294967295) 4294967296) 8))) (let ((.cse46 (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (.cse44 (select .cse48 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse49 (- 34359738368)))) (.cse47 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse49 (- 34359738368))))) (let ((.cse45 (store .cse48 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse46 (- 34359738368)) (+ .cse44 .cse47))) (.cse43 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8))) (let ((.cse42 (store .cse45 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse43 (- 34359738368)) v_ArrVal_486))) (or (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse42) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse43 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))))) (= (select (store .cse42 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296) 8)) v_ArrVal_487) (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) 5) (< v_ArrVal_486 (+ .cse44 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse45) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse46 (- 34359738368))) .cse47))))))))))) .cse0)) (<= .cse24 2147483647))))) is different from false [2021-12-17 01:39:33,573 WARN L227 SmtUtils]: Spent 33.21s on a formula simplification. DAG size of input: 162 DAG size of output: 104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 01:39:59,899 WARN L227 SmtUtils]: Spent 7.17s on a formula simplification that was a NOOP. DAG size: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 01:40:25,013 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_479 Int)) (or (let ((.cse2 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4294967295) 4294967296))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* .cse2 8))) (and (or (< v_ArrVal_479 (+ (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 4)) (< 2147483647 .cse2)) (or (< v_ArrVal_479 (+ (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 34359738368))) 4)) (<= .cse2 2147483647))))) (let ((.cse3 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (< 2147483647 .cse3) (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_479)))) (let ((.cse9 (store (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse8 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse6 (select (select (store .cse4 |c_ULTIMATE.start_main_~b~0#1.base| .cse9) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse7 (store .cse9 .cse8 (+ .cse6 1)))) (let ((.cse5 (store .cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store .cse4 |c_ULTIMATE.start_main_~b~0#1.base| .cse5) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (< v_ArrVal_486 (+ .cse6 (select (select (store .cse4 |c_ULTIMATE.start_main_~b~0#1.base| .cse7) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)) (= (select (store .cse5 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse8) 5))))))))) (or (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_479)))) (let ((.cse15 (store (select .cse10 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse12 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse14 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse15) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse13 (store .cse15 .cse12 (+ .cse14 1)))) (let ((.cse11 (store .cse13 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse11) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (= (select (store .cse11 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse12) 5) (< v_ArrVal_486 (+ (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse14 1))))))))) (<= .cse3 2147483647)))))) is different from false [2021-12-17 01:40:32,197 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_479 Int)) (or (let ((.cse2 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse1 (* .cse2 8))) (and (or (< v_ArrVal_479 (+ (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 34359738368))) 4)) (<= .cse2 2147483647)) (or (< v_ArrVal_479 (+ (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1)) 4)) (< 2147483647 .cse2))))) (let ((.cse9 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_479)))) (let ((.cse8 (store (select .cse5 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse7 (select (select (store .cse5 |c_ULTIMATE.start_main_~b~0#1.base| .cse8) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse6 (store .cse8 .cse4 (+ .cse7 1)))) (let ((.cse3 (store .cse6 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (= (select (store .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse4) 5) (< v_ArrVal_486 (+ (select (select (store .cse5 |c_ULTIMATE.start_main_~b~0#1.base| .cse6) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse7 1)) (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store .cse5 |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))))))))))) (< 2147483647 .cse9)) (or (<= .cse9 2147483647) (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_479)))) (let ((.cse15 (store (select .cse10 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse14 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse12 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse15) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse13 (store .cse15 .cse14 (+ .cse12 1)))) (let ((.cse11 (store .cse13 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse11) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (< v_ArrVal_486 (+ .cse12 (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| .cse13) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)) (= (select (store .cse11 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse14) 5))))))))))))) is different from false [2021-12-17 01:41:40,938 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_477 Int)) (or (let ((.cse13 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (and (or (forall ((v_ArrVal_479 Int)) (or (< v_ArrVal_479 (+ v_ArrVal_477 4)) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_477) (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_479)))) (let ((.cse5 (store (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse4 (select (select (store .cse0 |c_ULTIMATE.start_main_~b~0#1.base| .cse5) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse3 (store .cse5 .cse2 (+ .cse4 1)))) (let ((.cse1 (store .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store .cse0 |c_ULTIMATE.start_main_~b~0#1.base| .cse1) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (= (select (store .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse2) 5) (< v_ArrVal_486 (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~b~0#1.base| .cse3) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse4 1))))))))) (< 2147483647 .cse6)) (or (<= .cse6 2147483647) (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) v_ArrVal_477) (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_479)))) (let ((.cse12 (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse8 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse11 (select (select (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| .cse12) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse10 (store .cse12 .cse8 (+ .cse11 1)))) (let ((.cse7 (store .cse10 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (= (select (store .cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse8) 5) (< v_ArrVal_486 (+ (select (select (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| .cse10) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse11 1)) (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| .cse7) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))))))))))))))) (< 2147483647 .cse13)) (or (forall ((v_ArrVal_479 Int)) (or (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_477) (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_479)))) (let ((.cse19 (store (select .cse17 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse15 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~b~0#1.base| .cse19) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse18 (store .cse19 .cse15 (+ .cse16 1)))) (let ((.cse14 (store .cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (= (select (store .cse14 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse15) 5) (< v_ArrVal_486 (+ .cse16 (select (select (store .cse17 |c_ULTIMATE.start_main_~b~0#1.base| .cse18) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)) (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store .cse17 |c_ULTIMATE.start_main_~b~0#1.base| .cse14) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))))))))))) (< 2147483647 .cse20)) (or (<= .cse20 2147483647) (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse24 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) v_ArrVal_477) (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_479)))) (let ((.cse26 (store (select .cse24 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse22 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse23 (select (select (store .cse24 |c_ULTIMATE.start_main_~b~0#1.base| .cse26) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse25 (store .cse26 .cse22 (+ .cse23 1)))) (let ((.cse21 (store .cse25 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (= (select (store .cse21 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse22) 5) (< v_ArrVal_486 (+ .cse23 (select (select (store .cse24 |c_ULTIMATE.start_main_~b~0#1.base| .cse25) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1)) (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store .cse24 |c_ULTIMATE.start_main_~b~0#1.base| .cse21) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))))))))))))) (< v_ArrVal_479 (+ v_ArrVal_477 4)))) (<= .cse13 2147483647)))) (let ((.cse27 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4294967295) 4294967296))) (let ((.cse28 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse29 (* .cse27 8))) (and (or (< 2147483647 .cse27) (< v_ArrVal_477 (+ (select .cse28 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse29)) 4))) (or (< v_ArrVal_477 (+ (select .cse28 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse29 (- 34359738368))) 4)) (<= .cse27 2147483647))))))) is different from false [2021-12-17 01:43:12,832 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_477 Int)) (or (let ((.cse13 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((v_ArrVal_479 Int)) (or (< v_ArrVal_479 (+ v_ArrVal_477 4)) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296))) (and (or (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_477) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296) 8)) v_ArrVal_479)))) (let ((.cse5 (store (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse3 (select (select (store .cse0 |c_ULTIMATE.start_main_~b~0#1.base| .cse5) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse4 (store .cse5 .cse2 (+ .cse3 1)))) (let ((.cse1 (store .cse4 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (< v_ArrVal_487 (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~b~0#1.base| .cse1) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)) v_ArrVal_486)) (= (select (store .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse2) 5) (< v_ArrVal_486 (+ .cse3 (select (select (store .cse0 |c_ULTIMATE.start_main_~b~0#1.base| .cse4) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1))))))))) (< 2147483647 .cse6)) (or (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_477) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296) 8) (- 34359738368)) v_ArrVal_479)))) (let ((.cse12 (store (select .cse7 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse11 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse9 (select (select (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| .cse12) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse8 (store .cse12 .cse11 (+ .cse9 1)))) (let ((.cse10 (store .cse8 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (< v_ArrVal_486 (+ (select (select (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| .cse8) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse9 1)) (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| .cse10) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (= (select (store .cse10 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse11) 5)))))))) (<= .cse6 2147483647)))))) (< 2147483647 .cse13)) (or (forall ((v_ArrVal_479 Int)) (or (< v_ArrVal_479 (+ v_ArrVal_477 4)) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296))) (and (or (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_477) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296) 8) (- 34359738368)) v_ArrVal_479)))) (let ((.cse19 (store (select .cse16 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse15 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse17 (select (select (store .cse16 |c_ULTIMATE.start_main_~b~0#1.base| .cse19) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse18 (store .cse19 .cse15 (+ .cse17 1)))) (let ((.cse14 (store .cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (= (select (store .cse14 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse15) 5) (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store .cse16 |c_ULTIMATE.start_main_~b~0#1.base| .cse14) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (< v_ArrVal_486 (+ .cse17 (select (select (store .cse16 |c_ULTIMATE.start_main_~b~0#1.base| .cse18) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 1))))))))) (<= .cse20 2147483647)) (or (forall ((v_ArrVal_487 Int) (v_ArrVal_486 Int)) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) v_ArrVal_477) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 2) 4294967296) 8)) v_ArrVal_479)))) (let ((.cse26 (store (select .cse21 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse25 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (.cse23 (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| .cse26) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse22 (store .cse26 .cse25 (+ .cse23 1)))) (let ((.cse24 (store .cse22 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 16) v_ArrVal_486))) (or (< v_ArrVal_486 (+ (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| .cse22) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse23 1)) (< v_ArrVal_487 (+ v_ArrVal_486 (select (select (store .cse21 |c_ULTIMATE.start_main_~b~0#1.base| .cse24) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16)))) (= (select (store .cse24 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 24) v_ArrVal_487) .cse25) 5)))))))) (< 2147483647 .cse20)))))) (<= .cse13 2147483647)))) (let ((.cse29 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse27 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse28 (* .cse29 8))) (and (or (< v_ArrVal_477 (+ (select .cse27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse28 (- 34359738368))) 4)) (<= .cse29 2147483647)) (or (< v_ArrVal_477 (+ (select .cse27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse28)) 4)) (< 2147483647 .cse29))))))) is different from false Killed by 15