./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/heap-manipulation/sll_to_dll_rev-2.i -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 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:14:29,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:14:29,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:14:29,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:14:29,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:14:29,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:14:29,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:14:29,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:14:29,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:14:29,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:14:29,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:14:29,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:14:29,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:14:29,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:14:29,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:14:29,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:14:29,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:14:29,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:14:29,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:14:29,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:14:29,081 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:14:29,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:14:29,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:14:29,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:14:29,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:14:29,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:14:29,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:14:29,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:14:29,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:14:29,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:14:29,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:14:29,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:14:29,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:14:29,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:14:29,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:14:29,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:14:29,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:14:29,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:14:29,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:14:29,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:14:29,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:14:29,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:14:29,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:14:29,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:14:29,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:14:29,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:14:29,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:14:29,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:14:29,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:14:29,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:14:29,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:14:29,131 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:14:29,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:14:29,132 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:14:29,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:14:29,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:14:29,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:14:29,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:14:29,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:14:29,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:14:29,133 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:14:29,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:14:29,133 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:14:29,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:14:29,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:14:29,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:14:29,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:14:29,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:14:29,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:14:29,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:14:29,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:14:29,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:14:29,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:14:29,135 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:14:29,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:14:29,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:14:29,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f9453cad2383b5119b308e041fed5f4a740e7abd43cb8ad7833872af20a8d57 [2022-07-12 03:14:29,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:14:29,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:14:29,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:14:29,378 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:14:29,378 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:14:29,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2022-07-12 03:14:29,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74c66ea7/3ef62acf6e4542fcba6e3b40ab59bf5c/FLAGfe5029005 [2022-07-12 03:14:29,884 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:14:29,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-2.i [2022-07-12 03:14:29,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74c66ea7/3ef62acf6e4542fcba6e3b40ab59bf5c/FLAGfe5029005 [2022-07-12 03:14:29,916 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a74c66ea7/3ef62acf6e4542fcba6e3b40ab59bf5c [2022-07-12 03:14:29,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:14:29,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:14:29,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:14:29,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:14:29,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:14:29,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:14:29" (1/1) ... [2022-07-12 03:14:29,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a916f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:29, skipping insertion in model container [2022-07-12 03:14:29,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:14:29" (1/1) ... [2022-07-12 03:14:29,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:14:29,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:14:30,186 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/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2022-07-12 03:14:30,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:14:30,216 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:14:30,265 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/heap-manipulation/sll_to_dll_rev-2.i[22636,22649] [2022-07-12 03:14:30,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:14:30,299 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:14:30,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30 WrapperNode [2022-07-12 03:14:30,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:14:30,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:14:30,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:14:30,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:14:30,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30" (1/1) ... [2022-07-12 03:14:30,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30" (1/1) ... [2022-07-12 03:14:30,355 INFO L137 Inliner]: procedures = 129, calls = 79, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 200 [2022-07-12 03:14:30,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:14:30,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:14:30,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:14:30,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:14:30,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30" (1/1) ... [2022-07-12 03:14:30,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30" (1/1) ... [2022-07-12 03:14:30,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30" (1/1) ... [2022-07-12 03:14:30,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30" (1/1) ... [2022-07-12 03:14:30,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30" (1/1) ... [2022-07-12 03:14:30,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30" (1/1) ... [2022-07-12 03:14:30,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30" (1/1) ... [2022-07-12 03:14:30,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:14:30,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:14:30,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:14:30,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:14:30,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30" (1/1) ... [2022-07-12 03:14:30,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:14:30,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:14:30,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 03:14:30,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 03:14:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-12 03:14:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-12 03:14:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 03:14:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:14:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 03:14:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 03:14:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 03:14:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2022-07-12 03:14:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2022-07-12 03:14:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 03:14:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 03:14:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2022-07-12 03:14:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2022-07-12 03:14:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:14:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2022-07-12 03:14:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2022-07-12 03:14:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:14:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:14:30,618 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:14:30,620 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:14:30,910 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:14:30,916 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:14:30,917 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2022-07-12 03:14:30,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:14:30 BoogieIcfgContainer [2022-07-12 03:14:30,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:14:30,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:14:30,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:14:30,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:14:30,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:14:29" (1/3) ... [2022-07-12 03:14:30,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ae20c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:14:30, skipping insertion in model container [2022-07-12 03:14:30,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:14:30" (2/3) ... [2022-07-12 03:14:30,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ae20c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:14:30, skipping insertion in model container [2022-07-12 03:14:30,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:14:30" (3/3) ... [2022-07-12 03:14:30,926 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-2.i [2022-07-12 03:14:30,937 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:14:30,938 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:14:30,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:14:30,975 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@364e3a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31ca551 [2022-07-12 03:14:30,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:14:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 76 states have (on average 1.6578947368421053) internal successors, (126), 82 states have internal predecessors, (126), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-12 03:14:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-12 03:14:30,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:30,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:30,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:30,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:30,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1660370747, now seen corresponding path program 1 times [2022-07-12 03:14:30,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:14:30,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342812740] [2022-07-12 03:14:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:30,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:14:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:14:31,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:14:31,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342812740] [2022-07-12 03:14:31,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342812740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:14:31,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:14:31,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:14:31,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713524467] [2022-07-12 03:14:31,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:14:31,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:14:31,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:14:31,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:14:31,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:14:31,130 INFO L87 Difference]: Start difference. First operand has 96 states, 76 states have (on average 1.6578947368421053) internal successors, (126), 82 states have internal predecessors, (126), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:14:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:31,185 INFO L93 Difference]: Finished difference Result 188 states and 326 transitions. [2022-07-12 03:14:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:14:31,187 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-12 03:14:31,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:31,193 INFO L225 Difference]: With dead ends: 188 [2022-07-12 03:14:31,193 INFO L226 Difference]: Without dead ends: 88 [2022-07-12 03:14:31,202 INFO L412 NwaCegarLoop]: 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 [2022-07-12 03:14:31,206 INFO L413 NwaCegarLoop]: 115 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, 115 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:14:31,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:14:31,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-12 03:14:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-07-12 03:14:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 75 states have internal predecessors, (83), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 03:14:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2022-07-12 03:14:31,250 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 16 [2022-07-12 03:14:31,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:31,251 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2022-07-12 03:14:31,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:14:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2022-07-12 03:14:31,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-12 03:14:31,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:31,254 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:31,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:14:31,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:31,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:31,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1299807145, now seen corresponding path program 1 times [2022-07-12 03:14:31,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:14:31,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992145058] [2022-07-12 03:14:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:31,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:14:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:31,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:14:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:31,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:14:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:31,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:14:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 03:14:32,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:14:32,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992145058] [2022-07-12 03:14:32,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992145058] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:14:32,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419999326] [2022-07-12 03:14:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:32,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:14:32,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:14:32,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:14:32,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 03:14:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:32,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-12 03:14:32,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:14:32,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-07-12 03:14:32,516 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:14:32,517 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:14:32,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-07-12 03:14:32,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-07-12 03:14:32,597 INFO L356 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-07-12 03:14:32,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 34 [2022-07-12 03:14:32,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-07-12 03:14:32,619 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (let ((.cse0 (not (= .cse1 0)))) (or (and .cse0 (not (= .cse1 |c_chain_node_#in~ppnode#1.base|))) (and (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (and (= .cse2 (select v_DerPreprocessor_2 |c_chain_node_#in~ppnode#1.offset|)) (= (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_1) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_2) .cse2 v_DerPreprocessor_1) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_2) .cse2) v_DerPreprocessor_1)))) .cse0)))) is different from true [2022-07-12 03:14:32,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 03:14:32,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-12 03:14:32,908 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_328 (Array Int Int)) (v_ArrVal_327 (Array Int Int)) (v_ArrVal_329 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_alloc_node_~ptr~0#1.base| Int)) (and (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_327) |chain_node_~node~0#1.base| v_ArrVal_328) |c_chain_node_#in~ppnode#1.base| v_ArrVal_329) |c_#memory_$Pointer$.base|) (< |chain_node_alloc_node_~ptr~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-07-12 03:14:32,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:32,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:32,959 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-07-12 03:14:32,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2022-07-12 03:14:32,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-12 03:14:33,017 INFO L390 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 16 treesize of output 8 [2022-07-12 03:14:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-07-12 03:14:33,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:14:33,094 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_337 (Array Int Int)) (|v_chain_node_alloc_node_~ptr~0#1.base_8| Int) (v_ArrVal_336 (Array Int Int)) (|v_chain_node_~node~0#1.base_4| Int) (v_ArrVal_338 (Array Int Int))) (or (not (= (select (select (store (store (store |c_#memory_$Pointer$.base| |v_chain_node_alloc_node_~ptr~0#1.base_8| v_ArrVal_337) |v_chain_node_~node~0#1.base_4| v_ArrVal_338) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_336) |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|) 0)) (< |v_chain_node_alloc_node_~ptr~0#1.base_8| |v_chain_node_~node~0#1.base_4|) (not (< |v_chain_node_alloc_node_~ptr~0#1.base_8| |c_#StackHeapBarrier|)))) is different from false [2022-07-12 03:14:33,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419999326] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:14:33,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:14:33,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2022-07-12 03:14:33,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122563513] [2022-07-12 03:14:33,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:14:33,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 03:14:33,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:14:33,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 03:14:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=443, Unknown=4, NotChecked=132, Total=650 [2022-07-12 03:14:33,100 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 25 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 6 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-12 03:14:33,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:33,896 INFO L93 Difference]: Finished difference Result 150 states and 186 transitions. [2022-07-12 03:14:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 03:14:33,897 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 6 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2022-07-12 03:14:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:33,900 INFO L225 Difference]: With dead ends: 150 [2022-07-12 03:14:33,900 INFO L226 Difference]: Without dead ends: 147 [2022-07-12 03:14:33,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=811, Unknown=6, NotChecked=180, Total=1122 [2022-07-12 03:14:33,901 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 99 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 360 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 03:14:33,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 760 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1153 Invalid, 0 Unknown, 360 Unchecked, 0.6s Time] [2022-07-12 03:14:33,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-07-12 03:14:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 108. [2022-07-12 03:14:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 93 states have internal predecessors, (104), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 03:14:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 133 transitions. [2022-07-12 03:14:33,911 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 133 transitions. Word has length 40 [2022-07-12 03:14:33,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:33,911 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 133 transitions. [2022-07-12 03:14:33,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 6 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-12 03:14:33,911 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 133 transitions. [2022-07-12 03:14:33,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-12 03:14:33,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:33,912 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:33,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 03:14:34,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:14:34,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash -727961485, now seen corresponding path program 1 times [2022-07-12 03:14:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:14:34,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855358279] [2022-07-12 03:14:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:34,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:14:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:34,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:14:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:34,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:14:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:14:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 03:14:34,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:14:34,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855358279] [2022-07-12 03:14:34,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855358279] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:14:34,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340921025] [2022-07-12 03:14:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:34,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:14:34,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:14:34,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:14:34,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 03:14:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:34,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-12 03:14:34,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:14:34,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-12 03:14:35,002 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:14:35,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:14:35,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-07-12 03:14:35,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-07-12 03:14:35,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 19 [2022-07-12 03:14:35,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-12 03:14:35,043 WARN L855 $PredicateComparison]: unable to prove that (or (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (and (not (= .cse0 0)) (not (= .cse0 |c_chain_node_#in~ppnode#1.base|)))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int))) (let ((.cse1 (select v_DerPreprocessor_5 |c_chain_node_#in~ppnode#1.offset|))) (and (= .cse1 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|)) (not (= .cse1 0)) (= .cse1 |c_chain_node_#in~ppnode#1.base|) (= v_DerPreprocessor_4 (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_4) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_5) .cse1 v_DerPreprocessor_4) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_5) .cse1)))))) is different from true [2022-07-12 03:14:35,053 WARN L855 $PredicateComparison]: unable to prove that (or (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (and (not (= .cse0 0)) (not (= .cse0 |c_chain_node_#in~ppnode#1.base|)))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int))) (let ((.cse1 (select v_DerPreprocessor_5 |c_chain_node_#in~ppnode#1.offset|))) (and (= .cse1 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|)) (not (= .cse1 0)) (= v_DerPreprocessor_4 (select (store (store (store (store |c_#memory_$Pointer$.base| .cse1 v_DerPreprocessor_4) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_5) .cse1 v_DerPreprocessor_4) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_5) .cse1)))))) is different from true [2022-07-12 03:14:35,161 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-12 03:14:35,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 36 [2022-07-12 03:14:35,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-12 03:14:35,200 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:14:35,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 8 [2022-07-12 03:14:35,275 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_645 (Array Int Int)) (v_ArrVal_644 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_alloc_node_~ptr~0#1.base| Int) (v_ArrVal_643 (Array Int Int))) (and (<= (+ 1 |chain_node_alloc_node_~ptr~0#1.base|) |c_#StackHeapBarrier|) (<= |chain_node_~node~0#1.base| |chain_node_alloc_node_~ptr~0#1.base|) (= (store (store (store |c_old(#memory_$Pointer$.base)| |chain_node_alloc_node_~ptr~0#1.base| v_ArrVal_643) |chain_node_~node~0#1.base| v_ArrVal_644) |c_chain_node_#in~ppnode#1.base| v_ArrVal_645) |c_#memory_$Pointer$.base|))) is different from true [2022-07-12 03:14:35,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:35,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:35,330 INFO L356 Elim1Store]: treesize reduction 43, result has 47.6 percent of original size [2022-07-12 03:14:35,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 57 [2022-07-12 03:14:35,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-07-12 03:14:35,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-12 03:14:35,508 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_649 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_650 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_649) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_650) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)) |c_#memory_$Pointer$.base|) (not (= |chain_node_~node~0#1.base| 0)))) is different from true [2022-07-12 03:14:35,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:35,581 INFO L356 Elim1Store]: treesize reduction 61, result has 37.1 percent of original size [2022-07-12 03:14:35,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 101 [2022-07-12 03:14:35,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-07-12 03:14:35,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-07-12 03:14:35,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-07-12 03:14:35,669 INFO L356 Elim1Store]: treesize reduction 73, result has 19.8 percent of original size [2022-07-12 03:14:35,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 64 [2022-07-12 03:14:35,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-07-12 03:14:35,701 INFO L390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2022-07-12 03:14:35,874 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:14:35,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 54 [2022-07-12 03:14:35,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:14:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2022-07-12 03:14:35,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:14:36,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340921025] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:14:36,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:14:36,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 31 [2022-07-12 03:14:36,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104773204] [2022-07-12 03:14:36,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:14:36,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 03:14:36,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:14:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 03:14:36,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=663, Unknown=17, NotChecked=220, Total=992 [2022-07-12 03:14:36,018 INFO L87 Difference]: Start difference. First operand 108 states and 133 transitions. Second operand has 31 states, 24 states have (on average 2.25) internal successors, (54), 28 states have internal predecessors, (54), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-12 03:14:36,557 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (let ((.cse0 (not (= .cse1 0)))) (and (or (and .cse0 (not (= .cse1 |c_chain_node_#in~ppnode#1.base|))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int))) (let ((.cse2 (select v_DerPreprocessor_5 |c_chain_node_#in~ppnode#1.offset|))) (and (= .cse2 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|)) (not (= .cse2 0)) (= .cse2 |c_chain_node_#in~ppnode#1.base|) (= v_DerPreprocessor_4 (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_4) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_5) .cse2 v_DerPreprocessor_4) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_5) .cse2)))))) .cse0))) is different from true [2022-07-12 03:14:36,603 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (let ((.cse0 (not (= .cse1 0)))) (and (or (and .cse0 (not (= .cse1 |c_chain_node_#in~ppnode#1.base|))) (exists ((v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_4 (Array Int Int))) (let ((.cse2 (select v_DerPreprocessor_5 |c_chain_node_#in~ppnode#1.offset|))) (and (= .cse2 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|)) (not (= .cse2 0)) (= v_DerPreprocessor_4 (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_4) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_5) .cse2 v_DerPreprocessor_4) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_5) .cse2)))))) .cse0))) is different from true [2022-07-12 03:14:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:14:36,983 INFO L93 Difference]: Finished difference Result 137 states and 168 transitions. [2022-07-12 03:14:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 03:14:36,983 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 2.25) internal successors, (54), 28 states have internal predecessors, (54), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 42 [2022-07-12 03:14:36,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:14:36,984 INFO L225 Difference]: With dead ends: 137 [2022-07-12 03:14:36,984 INFO L226 Difference]: Without dead ends: 134 [2022-07-12 03:14:36,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=170, Invalid=1310, Unknown=26, NotChecked=474, Total=1980 [2022-07-12 03:14:36,986 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 140 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 527 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 03:14:36,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 753 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 934 Invalid, 0 Unknown, 527 Unchecked, 0.5s Time] [2022-07-12 03:14:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-12 03:14:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 122. [2022-07-12 03:14:36,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 94 states have (on average 1.2234042553191489) internal successors, (115), 104 states have internal predecessors, (115), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-12 03:14:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2022-07-12 03:14:36,995 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 42 [2022-07-12 03:14:36,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:14:36,996 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2022-07-12 03:14:36,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 2.25) internal successors, (54), 28 states have internal predecessors, (54), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-12 03:14:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2022-07-12 03:14:36,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-12 03:14:36,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:14:36,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:14:37,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 03:14:37,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-12 03:14:37,215 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:14:37,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:14:37,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1343975071, now seen corresponding path program 1 times [2022-07-12 03:14:37,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:14:37,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066633363] [2022-07-12 03:14:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:37,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:14:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:14:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:37,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:14:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:14:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 03:14:38,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:14:38,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066633363] [2022-07-12 03:14:38,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066633363] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:14:38,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149480561] [2022-07-12 03:14:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:14:38,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:14:38,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:14:38,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:14:38,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 03:14:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:14:38,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 139 conjunts are in the unsatisfiable core [2022-07-12 03:14:38,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:14:38,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2022-07-12 03:14:38,844 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:14:38,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:14:38,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-07-12 03:14:38,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-07-12 03:14:38,890 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:14:38,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:14:38,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 9 [2022-07-12 03:14:38,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-12 03:14:39,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-07-12 03:14:39,047 INFO L390 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 8 treesize of output 4 [2022-07-12 03:14:39,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-07-12 03:14:39,189 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:14:39,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:14:39,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:14:39,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:14:39,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2022-07-12 03:14:39,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-12 03:14:39,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2022-07-12 03:14:39,276 INFO L356 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-07-12 03:14:39,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 29 [2022-07-12 03:14:39,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:39,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2022-07-12 03:14:39,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 13 [2022-07-12 03:14:39,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 28 treesize of output 23 [2022-07-12 03:14:39,506 INFO L356 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-07-12 03:14:39,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 45 [2022-07-12 03:14:39,515 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-12 03:14:39,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 27 [2022-07-12 03:14:39,585 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:14:39,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-07-12 03:14:39,591 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-07-12 03:14:39,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 23 [2022-07-12 03:14:39,594 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-07-12 03:14:39,724 WARN L855 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_982 (Array Int Int)) (|chain_node_~node~0#1.offset| Int) (v_ArrVal_983 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_982 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_982) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) |c_#memory_$Pointer$.base|) (= (let ((.cse1 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_983 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_983) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse1 |c_chain_node_#in~ppnode#1.base| (store (select .cse1 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.offset|))) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:14:39,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:39,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:39,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:39,772 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-07-12 03:14:39,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 57 [2022-07-12 03:14:39,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:39,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:39,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:14:39,801 INFO L356 Elim1Store]: treesize reduction 67, result has 25.6 percent of original size [2022-07-12 03:14:39,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 82 treesize of output 88 [2022-07-12 03:14:39,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-07-12 03:14:39,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-07-12 03:14:39,823 INFO L356 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2022-07-12 03:14:39,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-07-12 03:14:39,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-07-12 03:14:39,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2022-07-12 03:14:39,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 67 [2022-07-12 03:14:40,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 35 [2022-07-12 03:14:40,017 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-12 03:14:40,286 INFO L356 Elim1Store]: treesize reduction 16, result has 82.8 percent of original size [2022-07-12 03:14:40,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 215 treesize of output 241 [2022-07-12 03:15:10,312 INFO L356 Elim1Store]: treesize reduction 68, result has 78.3 percent of original size [2022-07-12 03:15:10,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 174 treesize of output 326 [2022-07-12 03:15:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-07-12 03:15:12,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:15:13,181 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_chain_node_~node~0#1.offset_10| Int) (|v_chain_node_~node~0#1.base_10| Int) (v_ArrVal_1013 (Array Int Int)) (v_ArrVal_1012 (Array Int Int))) (or (not (= (select |c_#valid| |v_chain_node_~node~0#1.base_10|) 0)) (not (= (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_10| (store v_ArrVal_1012 |v_chain_node_~node~0#1.offset_10| (select (select (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_10| v_ArrVal_1012) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|))))) (store .cse1 |c_ULTIMATE.start_create_sll_~#list~0#1.base| (store (select .cse1 |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset| |v_chain_node_~node~0#1.base_10|))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|))) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_10| (store v_ArrVal_1013 |v_chain_node_~node~0#1.offset_10| (select (select (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_10| v_ArrVal_1013) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|))))) (store .cse2 |c_ULTIMATE.start_create_sll_~#list~0#1.base| (store (select .cse2 |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset| |v_chain_node_~node~0#1.offset_10|))) |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|)) 0)) (not (< |v_chain_node_~node~0#1.base_10| |c_#StackHeapBarrier|)))) is different from false [2022-07-12 03:15:13,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149480561] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:15:13,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:15:13,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 39 [2022-07-12 03:15:13,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321879620] [2022-07-12 03:15:13,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:15:13,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-12 03:15:13,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:15:13,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-12 03:15:13,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1291, Unknown=17, NotChecked=146, Total=1560 [2022-07-12 03:15:13,185 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand has 39 states, 31 states have (on average 2.193548387096774) internal successors, (68), 34 states have internal predecessors, (68), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-12 03:15:14,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:15:14,924 INFO L93 Difference]: Finished difference Result 156 states and 194 transitions. [2022-07-12 03:15:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 03:15:14,925 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 31 states have (on average 2.193548387096774) internal successors, (68), 34 states have internal predecessors, (68), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 46 [2022-07-12 03:15:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:15:14,926 INFO L225 Difference]: With dead ends: 156 [2022-07-12 03:15:14,926 INFO L226 Difference]: Without dead ends: 153 [2022-07-12 03:15:14,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=194, Invalid=2247, Unknown=17, NotChecked=194, Total=2652 [2022-07-12 03:15:14,927 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 68 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 407 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 03:15:14,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1191 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1490 Invalid, 0 Unknown, 407 Unchecked, 0.8s Time] [2022-07-12 03:15:14,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-12 03:15:14,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 117. [2022-07-12 03:15:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 101 states have internal predecessors, (111), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 03:15:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 142 transitions. [2022-07-12 03:15:14,936 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 142 transitions. Word has length 46 [2022-07-12 03:15:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:15:14,937 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 142 transitions. [2022-07-12 03:15:14,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 31 states have (on average 2.193548387096774) internal successors, (68), 34 states have internal predecessors, (68), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-12 03:15:14,937 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 142 transitions. [2022-07-12 03:15:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-12 03:15:14,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:15:14,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:15:14,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-12 03:15:15,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:15:15,156 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:15:15,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:15:15,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1320962275, now seen corresponding path program 1 times [2022-07-12 03:15:15,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:15:15,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319564804] [2022-07-12 03:15:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:15:15,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:15:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:15:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:15,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:15:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:15:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:15,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 03:15:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 03:15:15,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:15:15,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319564804] [2022-07-12 03:15:15,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319564804] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:15:15,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341926924] [2022-07-12 03:15:15,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:15:15,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:15:15,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:15:15,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:15:15,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 03:15:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:15,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 97 conjunts are in the unsatisfiable core [2022-07-12 03:15:15,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:15:15,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-07-12 03:15:16,032 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:15:16,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:15:16,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-07-12 03:15:16,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-07-12 03:15:16,064 INFO L356 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-07-12 03:15:16,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 26 [2022-07-12 03:15:16,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2022-07-12 03:15:16,320 INFO L356 Elim1Store]: treesize reduction 23, result has 43.9 percent of original size [2022-07-12 03:15:16,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 85 [2022-07-12 03:15:16,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-07-12 03:15:16,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-07-12 03:15:16,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-12 03:15:16,460 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1405 (Array Int Int)) (v_ArrVal_1404 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1405) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1404) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)) |c_#memory_$Pointer$.base|) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|) (not (= |chain_node_~node~0#1.base| 0)))) is different from true [2022-07-12 03:15:16,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:16,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:16,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:16,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 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 [2022-07-12 03:15:16,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 03:15:16,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-07-12 03:15:16,628 WARN L855 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_1409 (Array Int Int)) (v_ArrVal_1408 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_1408 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1408) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1409)))) is different from true [2022-07-12 03:15:16,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:16,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:16,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:16,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-07-12 03:15:16,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 9 [2022-07-12 03:15:16,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2022-07-12 03:15:16,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:16,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2022-07-12 03:15:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2022-07-12 03:15:16,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:15:16,814 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_chain_node_~node~0#1.base_13| Int) (v_ArrVal_1419 (Array Int Int)) (v_ArrVal_1418 (Array Int Int))) (or (not (< |v_chain_node_~node~0#1.base_13| |c_#StackHeapBarrier|)) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_13| (store v_ArrVal_1419 0 (select (select (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_13| v_ArrVal_1419) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |c_ULTIMATE.start_create_sll_~#list~0#1.offset|))) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_1418) |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|) 0)))) is different from false [2022-07-12 03:15:16,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341926924] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:15:16,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:15:16,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 31 [2022-07-12 03:15:16,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855708985] [2022-07-12 03:15:16,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:15:16,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 03:15:16,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:15:16,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 03:15:16,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=721, Unknown=7, NotChecked=168, Total=992 [2022-07-12 03:15:16,817 INFO L87 Difference]: Start difference. First operand 117 states and 142 transitions. Second operand has 31 states, 29 states have (on average 2.310344827586207) internal successors, (67), 28 states have internal predecessors, (67), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-12 03:15:17,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:15:17,752 INFO L93 Difference]: Finished difference Result 178 states and 218 transitions. [2022-07-12 03:15:17,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 03:15:17,752 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.310344827586207) internal successors, (67), 28 states have internal predecessors, (67), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) Word has length 49 [2022-07-12 03:15:17,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:15:17,754 INFO L225 Difference]: With dead ends: 178 [2022-07-12 03:15:17,754 INFO L226 Difference]: Without dead ends: 175 [2022-07-12 03:15:17,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=1388, Unknown=11, NotChecked=234, Total=1806 [2022-07-12 03:15:17,755 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 148 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 584 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 03:15:17,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 653 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1098 Invalid, 0 Unknown, 584 Unchecked, 0.6s Time] [2022-07-12 03:15:17,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-12 03:15:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 129. [2022-07-12 03:15:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 112 states have internal predecessors, (125), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 03:15:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2022-07-12 03:15:17,778 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 49 [2022-07-12 03:15:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:15:17,779 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2022-07-12 03:15:17,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.310344827586207) internal successors, (67), 28 states have internal predecessors, (67), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-12 03:15:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2022-07-12 03:15:17,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-12 03:15:17,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:15:17,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:15:17,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-12 03:15:18,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:15:18,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:15:18,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:15:18,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2055778686, now seen corresponding path program 1 times [2022-07-12 03:15:18,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:15:18,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602362412] [2022-07-12 03:15:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:15:18,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:15:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:18,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:15:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:18,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:15:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:15:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 03:15:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 03:15:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:15:19,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602362412] [2022-07-12 03:15:19,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602362412] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:15:19,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686759167] [2022-07-12 03:15:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:15:19,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:15:19,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:15:19,411 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:15:19,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 03:15:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:19,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 193 conjunts are in the unsatisfiable core [2022-07-12 03:15:19,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:15:19,623 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:15:19,624 INFO L390 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 23 treesize of output 19 [2022-07-12 03:15:19,740 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:15:19,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:15:19,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:15:19,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:15:19,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-07-12 03:15:19,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:15:19,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-07-12 03:15:19,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-12 03:15:20,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 03:15:20,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:20,041 INFO L390 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 16 treesize of output 17 [2022-07-12 03:15:20,591 INFO L356 Elim1Store]: treesize reduction 32, result has 57.3 percent of original size [2022-07-12 03:15:20,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 53 [2022-07-12 03:15:22,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:22,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:22,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:22,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 43 [2022-07-12 03:15:22,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:22,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:22,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:22,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 56 [2022-07-12 03:15:22,961 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:15:22,961 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2022-07-12 03:15:23,068 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:15:23,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 32 [2022-07-12 03:15:23,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2022-07-12 03:15:23,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:15:23,198 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1753 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_1749 (Array Int Int)) (v_ArrVal_1748 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_1748 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1748) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1753)) (= (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_1749 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_1749) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0))) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:15:23,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,266 INFO L356 Elim1Store]: treesize reduction 52, result has 8.8 percent of original size [2022-07-12 03:15:23,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 89 [2022-07-12 03:15:23,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:23,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 61 [2022-07-12 03:15:23,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-07-12 03:15:23,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2022-07-12 03:15:23,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:15:23,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-07-12 03:15:23,302 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-07-12 03:15:23,303 INFO L390 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 15 treesize of output 15 [2022-07-12 03:15:24,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:24,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:15:24,757 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:15:24,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 114 treesize of output 62 [2022-07-12 03:15:24,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:24,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:24,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:24,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:24,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:24,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:24,773 INFO L356 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-07-12 03:15:24,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 30 [2022-07-12 03:15:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-07-12 03:15:24,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:15:30,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686759167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:15:30,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:15:30,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 26] total 38 [2022-07-12 03:15:30,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468012098] [2022-07-12 03:15:30,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:15:30,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-07-12 03:15:30,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:15:30,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-07-12 03:15:30,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1728, Unknown=2, NotChecked=84, Total=1980 [2022-07-12 03:15:30,499 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand has 38 states, 32 states have (on average 2.46875) internal successors, (79), 34 states have internal predecessors, (79), 8 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-12 03:15:39,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:15:39,876 INFO L93 Difference]: Finished difference Result 148 states and 176 transitions. [2022-07-12 03:15:39,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 03:15:39,876 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 32 states have (on average 2.46875) internal successors, (79), 34 states have internal predecessors, (79), 8 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 50 [2022-07-12 03:15:39,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:15:39,877 INFO L225 Difference]: With dead ends: 148 [2022-07-12 03:15:39,878 INFO L226 Difference]: Without dead ends: 145 [2022-07-12 03:15:39,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=294, Invalid=2900, Unknown=2, NotChecked=110, Total=3306 [2022-07-12 03:15:39,880 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 151 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 03:15:39,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 823 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 873 Invalid, 0 Unknown, 249 Unchecked, 0.7s Time] [2022-07-12 03:15:39,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-12 03:15:39,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 132. [2022-07-12 03:15:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 114 states have internal predecessors, (128), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 03:15:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2022-07-12 03:15:39,899 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 50 [2022-07-12 03:15:39,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:15:39,901 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2022-07-12 03:15:39,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 32 states have (on average 2.46875) internal successors, (79), 34 states have internal predecessors, (79), 8 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-12 03:15:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2022-07-12 03:15:39,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-12 03:15:39,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:15:39,904 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:15:39,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 03:15:40,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:15:40,107 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:15:40,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:15:40,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1969592115, now seen corresponding path program 1 times [2022-07-12 03:15:40,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:15:40,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269924545] [2022-07-12 03:15:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:15:40,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:15:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:40,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:15:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:40,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:15:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:15:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:15:42,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:15:42,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269924545] [2022-07-12 03:15:42,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269924545] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:15:42,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328706440] [2022-07-12 03:15:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:15:42,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:15:42,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:15:42,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:15:42,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 03:15:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:42,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 189 conjunts are in the unsatisfiable core [2022-07-12 03:15:42,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:15:42,850 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:15:42,850 INFO L390 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 23 treesize of output 19 [2022-07-12 03:15:42,991 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:15:42,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:15:43,029 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:15:43,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:15:43,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:15:43,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:15:43,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:15:43,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:15:43,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-07-12 03:15:43,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:15:43,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-07-12 03:15:43,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-07-12 03:15:43,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-07-12 03:15:43,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-12 03:15:43,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-07-12 03:15:43,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:43,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:43,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:43,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-07-12 03:15:43,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:43,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:43,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:43,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 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 [2022-07-12 03:15:43,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 03:15:43,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-07-12 03:15:43,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-07-12 03:15:43,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:15:44,009 INFO L356 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-07-12 03:15:44,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 54 [2022-07-12 03:15:44,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,018 INFO L390 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 41 treesize of output 42 [2022-07-12 03:15:44,178 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-07-12 03:15:44,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 29 [2022-07-12 03:15:44,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 13 [2022-07-12 03:15:44,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-07-12 03:15:44,425 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2114 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_2112 (Array Int Int)) (v_ArrVal_2110 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2114) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2112)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.offset| (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_2110 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2110) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)))) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:15:44,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,473 INFO L356 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2022-07-12 03:15:44,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 88 [2022-07-12 03:15:44,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:44,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 58 [2022-07-12 03:15:44,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 03:15:44,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-12 03:15:44,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:15:44,520 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-07-12 03:15:44,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-12 03:15:45,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:45,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:45,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:45,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:45,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:45,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:45,555 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-12 03:15:45,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 39 [2022-07-12 03:15:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2022-07-12 03:15:45,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:15:46,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328706440] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:15:46,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:15:46,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 40 [2022-07-12 03:15:46,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632962359] [2022-07-12 03:15:46,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:15:46,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-12 03:15:46,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:15:46,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-12 03:15:46,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2013, Unknown=3, NotChecked=90, Total=2256 [2022-07-12 03:15:46,449 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand has 40 states, 32 states have (on average 2.28125) internal successors, (73), 35 states have internal predecessors, (73), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-12 03:15:48,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:15:48,124 INFO L93 Difference]: Finished difference Result 234 states and 283 transitions. [2022-07-12 03:15:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 03:15:48,125 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 32 states have (on average 2.28125) internal successors, (73), 35 states have internal predecessors, (73), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2022-07-12 03:15:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:15:48,128 INFO L225 Difference]: With dead ends: 234 [2022-07-12 03:15:48,128 INFO L226 Difference]: Without dead ends: 164 [2022-07-12 03:15:48,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=226, Invalid=2855, Unknown=3, NotChecked=108, Total=3192 [2022-07-12 03:15:48,130 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 43 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 03:15:48,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1044 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1311 Invalid, 0 Unknown, 375 Unchecked, 0.9s Time] [2022-07-12 03:15:48,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-12 03:15:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 157. [2022-07-12 03:15:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 135 states have internal predecessors, (151), 23 states have call successors, (23), 9 states have call predecessors, (23), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-12 03:15:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 188 transitions. [2022-07-12 03:15:48,161 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 188 transitions. Word has length 50 [2022-07-12 03:15:48,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:15:48,162 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 188 transitions. [2022-07-12 03:15:48,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 32 states have (on average 2.28125) internal successors, (73), 35 states have internal predecessors, (73), 9 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-12 03:15:48,162 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 188 transitions. [2022-07-12 03:15:48,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 03:15:48,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:15:48,165 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:15:48,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-12 03:15:48,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:15:48,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:15:48,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:15:48,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1872718035, now seen corresponding path program 1 times [2022-07-12 03:15:48,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:15:48,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228356167] [2022-07-12 03:15:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:15:48,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:15:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:48,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:15:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:48,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:15:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:15:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 03:15:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 03:15:48,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:15:48,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228356167] [2022-07-12 03:15:48,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228356167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:15:48,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123631757] [2022-07-12 03:15:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:15:48,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:15:48,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:15:48,988 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:15:48,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 03:15:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:49,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 128 conjunts are in the unsatisfiable core [2022-07-12 03:15:49,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:15:49,262 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:15:49,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:15:49,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-07-12 03:15:49,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-07-12 03:15:49,322 INFO L356 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-07-12 03:15:49,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 34 [2022-07-12 03:15:49,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-07-12 03:15:49,328 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (let ((.cse1 (= .cse3 |c_chain_node_#in~ppnode#1.base|)) (.cse0 (not (= .cse3 0)))) (or (and .cse0 (not .cse1)) (and .cse1 (exists ((v_DerPreprocessor_19 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (and (= v_DerPreprocessor_18 (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_18) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_19) .cse2 v_DerPreprocessor_18) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_19) .cse2)) (= (select v_DerPreprocessor_19 |c_chain_node_#in~ppnode#1.offset|) .cse2)))) .cse0)))) is different from true [2022-07-12 03:15:49,337 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (let ((.cse0 (not (= .cse1 0)))) (or (and .cse0 (not (= .cse1 |c_chain_node_#in~ppnode#1.base|))) (and (exists ((v_DerPreprocessor_19 (Array Int Int)) (v_DerPreprocessor_18 (Array Int Int))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) (and (= v_DerPreprocessor_18 (select (store (store (store (store |c_#memory_$Pointer$.base| .cse2 v_DerPreprocessor_18) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_19) .cse2 v_DerPreprocessor_18) |c_chain_node_#in~ppnode#1.base| v_DerPreprocessor_19) .cse2)) (= (select v_DerPreprocessor_19 |c_chain_node_#in~ppnode#1.offset|) .cse2)))) .cse0)))) is different from true [2022-07-12 03:15:49,453 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-12 03:15:49,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 03:15:49,494 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:15:49,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 8 [2022-07-12 03:15:49,586 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2527 (Array Int Int)) (v_ArrVal_2524 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2524) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2527) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (not (= |chain_node_~node~0#1.base| 0)))) is different from true [2022-07-12 03:15:49,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:49,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:49,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:49,618 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-07-12 03:15:49,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 44 [2022-07-12 03:15:49,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2022-07-12 03:15:49,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-07-12 03:15:49,744 INFO L356 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-07-12 03:15:49,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 45 [2022-07-12 03:15:49,845 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-07-12 03:15:49,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2022-07-12 03:15:49,901 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2534 (Array Int Int)) (v_ArrVal_2533 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (not (= |chain_node_~node~0#1.base| 0)) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2534) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2533) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)) |c_#memory_$Pointer$.base|))) is different from true [2022-07-12 03:15:49,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:49,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:49,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:49,951 INFO L356 Elim1Store]: treesize reduction 47, result has 44.7 percent of original size [2022-07-12 03:15:49,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 75 [2022-07-12 03:15:49,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-07-12 03:15:49,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2022-07-12 03:15:50,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-07-12 03:15:50,110 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:15:50,110 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2022-07-12 03:15:50,205 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2535 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (= (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_2535 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2535) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) |c_#memory_$Pointer$.base|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (not (= |chain_node_~node~0#1.base| 0)))) is different from true [2022-07-12 03:15:50,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:50,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:50,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:50,238 INFO L356 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-07-12 03:15:50,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 62 [2022-07-12 03:15:50,243 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 9 [2022-07-12 03:15:50,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2022-07-12 03:15:50,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2022-07-12 03:15:50,455 INFO L356 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-07-12 03:15:50,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 47 [2022-07-12 03:15:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 12 not checked. [2022-07-12 03:15:50,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:15:50,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123631757] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:15:50,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:15:50,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24] total 34 [2022-07-12 03:15:50,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761800292] [2022-07-12 03:15:50,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:15:50,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-12 03:15:50,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:15:50,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-12 03:15:50,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=766, Unknown=15, NotChecked=300, Total=1190 [2022-07-12 03:15:50,625 INFO L87 Difference]: Start difference. First operand 157 states and 188 transitions. Second operand has 34 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-12 03:15:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:15:51,639 INFO L93 Difference]: Finished difference Result 174 states and 209 transitions. [2022-07-12 03:15:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 03:15:51,640 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 51 [2022-07-12 03:15:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:15:51,641 INFO L225 Difference]: With dead ends: 174 [2022-07-12 03:15:51,641 INFO L226 Difference]: Without dead ends: 171 [2022-07-12 03:15:51,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=191, Invalid=1451, Unknown=18, NotChecked=410, Total=2070 [2022-07-12 03:15:51,642 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 139 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 725 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 03:15:51,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 680 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 985 Invalid, 0 Unknown, 725 Unchecked, 0.5s Time] [2022-07-12 03:15:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-12 03:15:51,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 157. [2022-07-12 03:15:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 126 states have (on average 1.1904761904761905) internal successors, (150), 135 states have internal predecessors, (150), 23 states have call successors, (23), 9 states have call predecessors, (23), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-12 03:15:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 187 transitions. [2022-07-12 03:15:51,658 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 187 transitions. Word has length 51 [2022-07-12 03:15:51,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:15:51,658 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 187 transitions. [2022-07-12 03:15:51,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 31 states have internal predecessors, (61), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-12 03:15:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 187 transitions. [2022-07-12 03:15:51,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-12 03:15:51,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:15:51,659 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:15:51,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 03:15:51,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:15:51,876 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:15:51,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:15:51,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1808852267, now seen corresponding path program 1 times [2022-07-12 03:15:51,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:15:51,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867861169] [2022-07-12 03:15:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:15:51,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:15:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:52,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:15:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:52,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:15:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:15:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 03:15:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 03:15:55,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:15:55,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867861169] [2022-07-12 03:15:55,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867861169] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:15:55,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242648372] [2022-07-12 03:15:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:15:55,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:15:55,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:15:55,440 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:15:55,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 03:15:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:15:55,690 WARN L261 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 234 conjunts are in the unsatisfiable core [2022-07-12 03:15:55,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:15:55,748 INFO L356 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-07-12 03:15:55,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 31 [2022-07-12 03:15:55,813 INFO L390 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 7 treesize of output 3 [2022-07-12 03:15:55,816 INFO L390 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 7 treesize of output 3 [2022-07-12 03:15:55,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:15:57,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2022-07-12 03:15:57,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 25 [2022-07-12 03:15:57,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-07-12 03:15:57,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 20 treesize of output 25 [2022-07-12 03:15:57,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2022-07-12 03:15:57,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-07-12 03:15:57,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 46 [2022-07-12 03:15:57,365 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-07-12 03:15:57,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 61 [2022-07-12 03:15:57,454 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:15:57,455 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 32 [2022-07-12 03:15:57,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-07-12 03:15:57,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 03:15:57,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,749 INFO L390 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 62 treesize of output 55 [2022-07-12 03:15:57,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,768 INFO L356 Elim1Store]: treesize reduction 47, result has 9.6 percent of original size [2022-07-12 03:15:57,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 69 [2022-07-12 03:15:57,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-07-12 03:15:57,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:15:57,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 52 [2022-07-12 03:15:57,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:57,808 INFO L356 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2022-07-12 03:15:57,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2022-07-12 03:15:57,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-07-12 03:15:58,011 INFO L356 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2022-07-12 03:15:58,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 147 treesize of output 93 [2022-07-12 03:15:58,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,025 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-12 03:15:58,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 78 [2022-07-12 03:15:58,151 INFO L356 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-07-12 03:15:58,152 INFO L390 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 7 new quantified variables, introduced 9 case distinctions, treesize of input 139 treesize of output 57 [2022-07-12 03:15:58,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,162 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:15:58,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 19 [2022-07-12 03:15:58,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,167 INFO L390 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 16 treesize of output 10 [2022-07-12 03:15:58,309 WARN L855 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_2894 (Array Int Int)) (v_ArrVal_2893 (Array Int Int)) (v_ArrVal_2892 (Array Int Int)) (v_ArrVal_2891 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2894) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2892) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)) |c_#memory_$Pointer$.offset|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_2891 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2891) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2893) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:15:58,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,379 INFO L356 Elim1Store]: treesize reduction 110, result has 9.1 percent of original size [2022-07-12 03:15:58,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 203 treesize of output 149 [2022-07-12 03:15:58,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,403 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:15:58,403 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 76 [2022-07-12 03:15:58,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-07-12 03:15:58,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:15:58,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:15:58,430 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-07-12 03:15:58,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2022-07-12 03:15:58,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-07-12 03:16:00,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:00,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:00,841 INFO L356 Elim1Store]: treesize reduction 215, result has 6.5 percent of original size [2022-07-12 03:16:00,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 26 case distinctions, treesize of input 249 treesize of output 126 [2022-07-12 03:16:00,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:00,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:00,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:00,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:00,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:00,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:00,862 INFO L356 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2022-07-12 03:16:00,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 36 [2022-07-12 03:16:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 4 not checked. [2022-07-12 03:16:00,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:16:02,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242648372] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:16:02,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:16:02,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25] total 40 [2022-07-12 03:16:02,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134738541] [2022-07-12 03:16:02,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:16:02,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-12 03:16:02,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:16:02,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-12 03:16:02,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1888, Unknown=8, NotChecked=88, Total=2162 [2022-07-12 03:16:02,658 INFO L87 Difference]: Start difference. First operand 157 states and 187 transitions. Second operand has 40 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 37 states have internal predecessors, (83), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 03:16:04,260 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_2894 (Array Int Int)) (v_ArrVal_2893 (Array Int Int)) (v_ArrVal_2892 (Array Int Int)) (v_ArrVal_2891 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2894) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2892) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)) |c_#memory_$Pointer$.offset|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_2891 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_2891) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_2893) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_2861 (Array Int Int)) (v_ArrVal_2856 Int) (v_ArrVal_2857 Int)) (and (= |c_#memory_$Pointer$.base| (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (let ((.cse1 (store (store (select |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base|) 0 v_ArrVal_2857) 4 0))) (store .cse1 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| .cse1) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|)))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)))) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (let ((.cse2 (store (store (select |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base|) 0 v_ArrVal_2856) 4 0))) (store .cse2 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| .cse2) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|)))) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_2861) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)) |c_#memory_$Pointer$.offset|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0)))) is different from true [2022-07-12 03:16:08,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:16:08,710 INFO L93 Difference]: Finished difference Result 240 states and 293 transitions. [2022-07-12 03:16:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 03:16:08,710 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 37 states have internal predecessors, (83), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 53 [2022-07-12 03:16:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:16:08,712 INFO L225 Difference]: With dead ends: 240 [2022-07-12 03:16:08,712 INFO L226 Difference]: Without dead ends: 237 [2022-07-12 03:16:08,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=302, Invalid=3114, Unknown=14, NotChecked=230, Total=3660 [2022-07-12 03:16:08,713 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 124 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 541 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 03:16:08,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1013 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 928 Invalid, 0 Unknown, 541 Unchecked, 0.8s Time] [2022-07-12 03:16:08,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-12 03:16:08,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 216. [2022-07-12 03:16:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 173 states have (on average 1.1849710982658959) internal successors, (205), 184 states have internal predecessors, (205), 34 states have call successors, (34), 10 states have call predecessors, (34), 8 states have return successors, (25), 21 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-12 03:16:08,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 264 transitions. [2022-07-12 03:16:08,772 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 264 transitions. Word has length 53 [2022-07-12 03:16:08,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:16:08,772 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 264 transitions. [2022-07-12 03:16:08,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 34 states have (on average 2.4411764705882355) internal successors, (83), 37 states have internal predecessors, (83), 9 states have call successors, (9), 5 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 03:16:08,772 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 264 transitions. [2022-07-12 03:16:08,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-12 03:16:08,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:16:08,773 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:16:08,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 03:16:08,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-12 03:16:08,993 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:16:08,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:16:08,993 INFO L85 PathProgramCache]: Analyzing trace with hash 830072921, now seen corresponding path program 1 times [2022-07-12 03:16:08,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:16:08,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275750887] [2022-07-12 03:16:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:16:08,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:16:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:16:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:16:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:16:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:10,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 03:16:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 03:16:11,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:16:11,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275750887] [2022-07-12 03:16:11,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275750887] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:16:11,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452995444] [2022-07-12 03:16:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:16:11,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:16:11,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:16:11,740 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:16:11,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 03:16:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:12,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 176 conjunts are in the unsatisfiable core [2022-07-12 03:16:12,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:16:12,060 INFO L356 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-07-12 03:16:12,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 27 [2022-07-12 03:16:12,143 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:16:12,144 INFO L390 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 11 treesize of output 7 [2022-07-12 03:16:12,302 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:16:12,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:16:12,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-07-12 03:16:12,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-07-12 03:16:12,349 INFO L356 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2022-07-12 03:16:12,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 42 [2022-07-12 03:16:12,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-07-12 03:16:12,536 INFO L356 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-07-12 03:16:12,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:16:12,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2022-07-12 03:16:12,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-12 03:16:12,826 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:16:12,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 03:16:13,072 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:16:13,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:16:13,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:13,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:13,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:16:13,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-07-12 03:16:13,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:16:13,185 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 03:16:13,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 21 [2022-07-12 03:16:13,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:13,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:13,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 32 [2022-07-12 03:16:13,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-07-12 03:16:13,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:13,455 INFO L356 Elim1Store]: treesize reduction 34, result has 29.2 percent of original size [2022-07-12 03:16:13,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 37 [2022-07-12 03:16:13,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:16:13,747 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-07-12 03:16:13,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 65 [2022-07-12 03:16:13,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:13,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:13,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:13,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 33 [2022-07-12 03:16:13,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:16:13,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-12 03:16:13,863 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-07-12 03:16:13,864 INFO L390 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 28 [2022-07-12 03:16:13,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:13,869 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:16:13,869 INFO L390 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 1 case distinctions, treesize of input 16 treesize of output 10 [2022-07-12 03:16:14,089 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3330 (Array Int Int)) (|chain_node_~ppnode#1.offset| Int) (v_ArrVal_3332 (Array Int Int)) (v_ArrVal_3333 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_3337 (Array Int Int)) (|chain_node_~node~0#1.offset| Int)) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3337) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3333)) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_3330 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3330) |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3332)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:16:14,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,154 INFO L356 Elim1Store]: treesize reduction 52, result has 8.8 percent of original size [2022-07-12 03:16:14,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 71 [2022-07-12 03:16:14,164 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:16:14,164 INFO L390 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 65 treesize of output 57 [2022-07-12 03:16:14,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-07-12 03:16:14,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:14,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-12 03:16:14,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,225 INFO L356 Elim1Store]: treesize reduction 88, result has 32.8 percent of original size [2022-07-12 03:16:14,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 65 [2022-07-12 03:16:14,465 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:16:14,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 33 [2022-07-12 03:16:14,470 INFO L390 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 7 treesize of output 3 [2022-07-12 03:16:14,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,478 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:16:14,478 INFO L390 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 1 case distinctions, treesize of input 21 treesize of output 13 [2022-07-12 03:16:14,654 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3340 (Array Int Int)) (|chain_node_~ppnode#1.offset| Int) (v_ArrVal_3341 (Array Int Int)) (v_ArrVal_3343 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_3347 (Array Int Int)) (|chain_node_~node~0#1.offset| Int)) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_3340 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3340) |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3347) |c_#memory_$Pointer$.offset|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3341) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3343) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:16:14,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-07-12 03:16:14,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,700 INFO L356 Elim1Store]: treesize reduction 39, result has 11.4 percent of original size [2022-07-12 03:16:14,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 80 [2022-07-12 03:16:14,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-12 03:16:14,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:14,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:14,732 INFO L356 Elim1Store]: treesize reduction 28, result has 47.2 percent of original size [2022-07-12 03:16:14,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 40 [2022-07-12 03:16:14,828 INFO L390 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 15 treesize of output 7 [2022-07-12 03:16:15,181 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:16:15,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 20 [2022-07-12 03:16:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 10 not checked. [2022-07-12 03:16:15,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:16:15,285 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3362 (Array Int Int)) (v_ArrVal_3363 (Array Int Int)) (v_ArrVal_3364 (Array Int Int)) (|v_chain_node_~node~0#1.base_31| Int) (v_ArrVal_3366 (Array Int Int)) (|v_chain_node_~ppnode#1.offset_30| Int) (|v_chain_node_~node~0#1.offset_29| Int)) (or (not (= (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_31| v_ArrVal_3366) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_3362))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_31| (store v_ArrVal_3364 |v_chain_node_~node~0#1.offset_29| (select (select (store |c_#memory_$Pointer$.offset| |v_chain_node_~node~0#1.base_31| v_ArrVal_3364) |c_ULTIMATE.start_create_sll_~#list~0#1.base|) |v_chain_node_~ppnode#1.offset_30|))) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_3363) |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|)) 0)) (not (< |v_chain_node_~node~0#1.base_31| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_chain_node_~node~0#1.base_31|) 0)))) is different from false [2022-07-12 03:16:15,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452995444] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:16:15,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:16:15,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 51 [2022-07-12 03:16:15,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961508415] [2022-07-12 03:16:15,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:16:15,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-12 03:16:15,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:16:15,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-12 03:16:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2221, Unknown=5, NotChecked=288, Total=2652 [2022-07-12 03:16:15,289 INFO L87 Difference]: Start difference. First operand 216 states and 264 transitions. Second operand has 51 states, 43 states have (on average 2.0) internal successors, (86), 45 states have internal predecessors, (86), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 03:16:18,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:16:18,837 INFO L93 Difference]: Finished difference Result 302 states and 368 transitions. [2022-07-12 03:16:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 03:16:18,838 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 43 states have (on average 2.0) internal successors, (86), 45 states have internal predecessors, (86), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 55 [2022-07-12 03:16:18,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:16:18,839 INFO L225 Difference]: With dead ends: 302 [2022-07-12 03:16:18,839 INFO L226 Difference]: Without dead ends: 299 [2022-07-12 03:16:18,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=267, Invalid=3900, Unknown=5, NotChecked=384, Total=4556 [2022-07-12 03:16:18,841 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 117 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 3644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 856 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 03:16:18,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 2149 Invalid, 3644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2736 Invalid, 0 Unknown, 856 Unchecked, 1.8s Time] [2022-07-12 03:16:18,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-12 03:16:18,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 247. [2022-07-12 03:16:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 196 states have (on average 1.1785714285714286) internal successors, (231), 211 states have internal predecessors, (231), 39 states have call successors, (39), 12 states have call predecessors, (39), 11 states have return successors, (31), 23 states have call predecessors, (31), 30 states have call successors, (31) [2022-07-12 03:16:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 301 transitions. [2022-07-12 03:16:18,872 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 301 transitions. Word has length 55 [2022-07-12 03:16:18,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:16:18,872 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 301 transitions. [2022-07-12 03:16:18,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 43 states have (on average 2.0) internal successors, (86), 45 states have internal predecessors, (86), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 03:16:18,873 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 301 transitions. [2022-07-12 03:16:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 03:16:18,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:16:18,874 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:16:18,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 03:16:19,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 03:16:19,091 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:16:19,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:16:19,092 INFO L85 PathProgramCache]: Analyzing trace with hash 992893756, now seen corresponding path program 1 times [2022-07-12 03:16:19,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:16:19,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482727432] [2022-07-12 03:16:19,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:16:19,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:16:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:19,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:16:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:19,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:16:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:16:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:20,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 03:16:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 03:16:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 03:16:22,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:16:22,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482727432] [2022-07-12 03:16:22,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482727432] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:16:22,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617021280] [2022-07-12 03:16:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:16:22,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:16:22,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:16:22,043 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:16:22,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 03:16:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:16:22,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 219 conjunts are in the unsatisfiable core [2022-07-12 03:16:22,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:16:22,462 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:16:22,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:16:22,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:22,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:22,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-07-12 03:16:22,667 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-12 03:16:22,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-07-12 03:16:22,735 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:16:22,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-07-12 03:16:22,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 03:16:22,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:22,825 INFO L390 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 16 treesize of output 17 [2022-07-12 03:16:23,711 INFO L356 Elim1Store]: treesize reduction 32, result has 57.3 percent of original size [2022-07-12 03:16:23,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 53 [2022-07-12 03:16:25,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:25,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:25,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:25,906 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-07-12 03:16:25,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 43 [2022-07-12 03:16:26,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,064 INFO L356 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-07-12 03:16:26,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 56 [2022-07-12 03:16:26,075 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-12 03:16:26,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 50 [2022-07-12 03:16:26,163 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:16:26,163 INFO L390 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 32 [2022-07-12 03:16:26,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,172 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-07-12 03:16:26,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 16 [2022-07-12 03:16:26,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:16:26,325 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3780 (Array Int Int)) (v_ArrVal_3782 (Array Int Int)) (v_ArrVal_3783 (Array Int Int)) (v_ArrVal_3784 (Array Int Int)) (|chain_node_~node~0#1.base| Int)) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3782) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_3784) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_3783) |c_chain_node_#in~ppnode#1.base| v_ArrVal_3780) |c_#memory_$Pointer$.offset|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:16:26,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,392 INFO L356 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2022-07-12 03:16:26,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 83 [2022-07-12 03:16:26,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,430 INFO L356 Elim1Store]: treesize reduction 28, result has 55.6 percent of original size [2022-07-12 03:16:26,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 77 [2022-07-12 03:16:26,448 INFO L356 Elim1Store]: treesize reduction 24, result has 36.8 percent of original size [2022-07-12 03:16:26,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 25 [2022-07-12 03:16:26,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:16:26,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 46 [2022-07-12 03:16:26,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 41 [2022-07-12 03:16:26,815 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:16:26,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 159 treesize of output 199 [2022-07-12 03:16:26,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-12 03:16:26,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:26,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2022-07-12 03:16:26,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 03:16:26,854 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:16:26,854 INFO L390 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 78 [2022-07-12 03:16:30,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:30,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:30,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:30,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:30,614 INFO L356 Elim1Store]: treesize reduction 162, result has 14.3 percent of original size [2022-07-12 03:16:30,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 184 treesize of output 203 [2022-07-12 03:16:30,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:30,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:30,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:30,667 INFO L356 Elim1Store]: treesize reduction 48, result has 44.2 percent of original size [2022-07-12 03:16:30,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 250 treesize of output 212 [2022-07-12 03:16:30,719 INFO L356 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2022-07-12 03:16:30,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 217 treesize of output 242 [2022-07-12 03:16:30,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:30,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:30,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:16:30,854 INFO L356 Elim1Store]: treesize reduction 124, result has 31.5 percent of original size [2022-07-12 03:16:30,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 166 treesize of output 212 [2022-07-12 03:16:31,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 23 [2022-07-12 03:16:31,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:31,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:31,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:31,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:31,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:31,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:16:31,461 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-12 03:16:31,483 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-12 03:16:31,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 23 [2022-07-12 03:16:31,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 87 [2022-07-12 03:16:55,902 WARN L233 SmtUtils]: Spent 18.52s on a formula simplification. DAG size of input: 181 DAG size of output: 101 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 03:16:58,074 INFO L356 Elim1Store]: treesize reduction 123, result has 35.6 percent of original size [2022-07-12 03:16:58,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 417 treesize of output 296 [2022-07-12 03:16:58,400 INFO L356 Elim1Store]: treesize reduction 210, result has 40.5 percent of original size [2022-07-12 03:16:58,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 1 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 53 case distinctions, treesize of input 220 treesize of output 304 [2022-07-12 03:17:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2022-07-12 03:17:02,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:17:15,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617021280] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:17:15,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:17:15,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 30] total 45 [2022-07-12 03:17:15,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951091335] [2022-07-12 03:17:15,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:17:15,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-12 03:17:15,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:17:15,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-12 03:17:15,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2346, Unknown=14, NotChecked=98, Total=2652 [2022-07-12 03:17:15,917 INFO L87 Difference]: Start difference. First operand 247 states and 301 transitions. Second operand has 45 states, 40 states have (on average 2.325) internal successors, (93), 41 states have internal predecessors, (93), 9 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-12 03:17:34,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:17:34,126 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2022-07-12 03:17:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 03:17:34,126 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 2.325) internal successors, (93), 41 states have internal predecessors, (93), 9 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) Word has length 59 [2022-07-12 03:17:34,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:17:34,128 INFO L225 Difference]: With dead ends: 323 [2022-07-12 03:17:34,128 INFO L226 Difference]: Without dead ends: 320 [2022-07-12 03:17:34,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 59.7s TimeCoverageRelationStatistics Valid=447, Invalid=5089, Unknown=18, NotChecked=146, Total=5700 [2022-07-12 03:17:34,130 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 171 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 816 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 03:17:34,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1160 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 881 Invalid, 0 Unknown, 816 Unchecked, 0.8s Time] [2022-07-12 03:17:34,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-12 03:17:34,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 278. [2022-07-12 03:17:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 221 states have (on average 1.1719457013574661) internal successors, (259), 238 states have internal predecessors, (259), 43 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (36), 25 states have call predecessors, (36), 34 states have call successors, (36) [2022-07-12 03:17:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 338 transitions. [2022-07-12 03:17:34,161 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 338 transitions. Word has length 59 [2022-07-12 03:17:34,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:17:34,161 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 338 transitions. [2022-07-12 03:17:34,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 2.325) internal successors, (93), 41 states have internal predecessors, (93), 9 states have call successors, (10), 6 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-12 03:17:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 338 transitions. [2022-07-12 03:17:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 03:17:34,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:17:34,162 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:17:34,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 03:17:34,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 03:17:34,380 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:17:34,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:17:34,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1079080327, now seen corresponding path program 1 times [2022-07-12 03:17:34,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:17:34,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511319156] [2022-07-12 03:17:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:17:34,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:17:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:34,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:17:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:17:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:35,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:17:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:37,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 03:17:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 03:17:38,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:17:38,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511319156] [2022-07-12 03:17:38,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511319156] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:17:38,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252731499] [2022-07-12 03:17:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:17:38,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:17:38,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:17:38,985 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:17:38,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 03:17:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:39,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 217 conjunts are in the unsatisfiable core [2022-07-12 03:17:39,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:17:39,315 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:17:39,315 INFO L390 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 23 treesize of output 19 [2022-07-12 03:17:39,430 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:17:39,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:17:39,452 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:17:39,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:17:39,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:17:39,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:17:39,468 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:17:39,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:17:39,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:17:39,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-07-12 03:17:39,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:17:39,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2022-07-12 03:17:39,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-12 03:17:39,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-12 03:17:39,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-07-12 03:17:39,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-07-12 03:17:39,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-12 03:17:39,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-07-12 03:17:39,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 03:17:40,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-07-12 03:17:40,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-07-12 03:17:40,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-07-12 03:17:40,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:17:40,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-07-12 03:17:40,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-07-12 03:17:40,512 INFO L356 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-07-12 03:17:40,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2022-07-12 03:17:40,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 42 [2022-07-12 03:17:40,657 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-07-12 03:17:40,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 29 [2022-07-12 03:17:40,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 37 treesize of output 13 [2022-07-12 03:17:40,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:17:40,919 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4240 (Array Int Int)) (v_ArrVal_4241 (Array Int Int)) (|chain_node_~ppnode#1.offset| Int) (v_ArrVal_4243 (Array Int Int)) (v_ArrVal_4247 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_~node~0#1.offset| Int)) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_4240 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4240) |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4247)) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_4241 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4241) |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4243)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:17:40,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,961 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 59 [2022-07-12 03:17:40,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:40,984 INFO L356 Elim1Store]: treesize reduction 60, result has 7.7 percent of original size [2022-07-12 03:17:40,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 74 treesize of output 75 [2022-07-12 03:17:41,005 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:17:41,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-07-12 03:17:41,017 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:17:41,017 INFO L390 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 20 treesize of output 24 [2022-07-12 03:17:41,029 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:17:41,030 INFO L390 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 25 treesize of output 27 [2022-07-12 03:17:41,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:17:41,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:17:41,321 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-07-12 03:17:41,321 INFO L390 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 30 [2022-07-12 03:17:41,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-07-12 03:17:41,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 03:17:41,520 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4262 (Array Int Int)) (v_ArrVal_4252 (Array Int Int)) (v_ArrVal_4258 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_4260 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_4252 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4252) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4258)) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4260) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4262) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0))) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:17:41,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,587 INFO L356 Elim1Store]: treesize reduction 60, result has 7.7 percent of original size [2022-07-12 03:17:41,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 90 [2022-07-12 03:17:41,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:41,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 50 [2022-07-12 03:17:41,618 INFO L356 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-07-12 03:17:41,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-07-12 03:17:41,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:17:41,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2022-07-12 03:17:41,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-12 03:17:42,550 INFO L356 Elim1Store]: treesize reduction 33, result has 8.3 percent of original size [2022-07-12 03:17:42,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 95 treesize of output 53 [2022-07-12 03:17:42,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:42,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:42,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:42,562 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-12 03:17:42,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 25 [2022-07-12 03:17:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2022-07-12 03:17:42,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:17:43,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252731499] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:17:43,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:17:43,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 48 [2022-07-12 03:17:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072668938] [2022-07-12 03:17:43,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:17:43,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-12 03:17:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:17:43,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-12 03:17:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2473, Unknown=7, NotChecked=202, Total=2862 [2022-07-12 03:17:43,399 INFO L87 Difference]: Start difference. First operand 278 states and 338 transitions. Second operand has 48 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 43 states have internal predecessors, (89), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-12 03:17:47,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:17:47,054 INFO L93 Difference]: Finished difference Result 408 states and 493 transitions. [2022-07-12 03:17:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 03:17:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 43 states have internal predecessors, (89), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 59 [2022-07-12 03:17:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:17:47,057 INFO L225 Difference]: With dead ends: 408 [2022-07-12 03:17:47,057 INFO L226 Difference]: Without dead ends: 338 [2022-07-12 03:17:47,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=347, Invalid=4210, Unknown=7, NotChecked=266, Total=4830 [2022-07-12 03:17:47,058 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 119 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 492 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 03:17:47,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1572 Invalid, 2572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2018 Invalid, 0 Unknown, 492 Unchecked, 1.9s Time] [2022-07-12 03:17:47,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-07-12 03:17:47,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 267. [2022-07-12 03:17:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 212 states have (on average 1.1650943396226414) internal successors, (247), 229 states have internal predecessors, (247), 41 states have call successors, (41), 14 states have call predecessors, (41), 13 states have return successors, (33), 23 states have call predecessors, (33), 32 states have call successors, (33) [2022-07-12 03:17:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 321 transitions. [2022-07-12 03:17:47,095 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 321 transitions. Word has length 59 [2022-07-12 03:17:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:17:47,096 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 321 transitions. [2022-07-12 03:17:47,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 41 states have (on average 2.1707317073170733) internal successors, (89), 43 states have internal predecessors, (89), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-12 03:17:47,096 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 321 transitions. [2022-07-12 03:17:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 03:17:47,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:17:47,097 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:17:47,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 03:17:47,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 03:17:47,308 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:17:47,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:17:47,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1740102043, now seen corresponding path program 1 times [2022-07-12 03:17:47,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:17:47,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528475076] [2022-07-12 03:17:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:17:47,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:17:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:17:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:47,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:17:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 03:17:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:48,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 03:17:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 03:17:49,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:17:49,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528475076] [2022-07-12 03:17:49,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528475076] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:17:49,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90651228] [2022-07-12 03:17:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:17:49,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:17:49,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:17:49,658 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:17:49,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 03:17:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:49,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 253 conjunts are in the unsatisfiable core [2022-07-12 03:17:50,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:17:50,029 INFO L356 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-07-12 03:17:50,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2022-07-12 03:17:50,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 03:17:50,372 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:17:50,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:17:50,390 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:17:50,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:17:50,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:17:50,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:17:50,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2022-07-12 03:17:50,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 11 [2022-07-12 03:17:50,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 15 [2022-07-12 03:17:50,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:17:50,466 INFO L356 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-07-12 03:17:50,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 90 [2022-07-12 03:17:50,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-07-12 03:17:50,637 INFO L356 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2022-07-12 03:17:50,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 115 treesize of output 157 [2022-07-12 03:17:50,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 1 [2022-07-12 03:17:51,044 INFO L356 Elim1Store]: treesize reduction 23, result has 43.9 percent of original size [2022-07-12 03:17:51,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 129 [2022-07-12 03:17:51,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 135 [2022-07-12 03:17:51,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-07-12 03:17:51,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:17:51,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 24 [2022-07-12 03:17:51,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2022-07-12 03:17:51,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-12 03:17:51,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:51,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:51,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:51,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2022-07-12 03:17:51,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:51,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:51,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:51,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-07-12 03:17:51,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-07-12 03:17:51,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-07-12 03:17:51,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-07-12 03:17:51,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:51,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:51,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 71 [2022-07-12 03:17:51,998 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-07-12 03:17:51,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 44 [2022-07-12 03:17:52,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2022-07-12 03:17:52,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-12 03:17:52,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 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 [2022-07-12 03:17:52,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,380 INFO L356 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2022-07-12 03:17:52,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 88 [2022-07-12 03:17:52,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 35 [2022-07-12 03:17:52,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-07-12 03:17:52,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:17:52,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,428 INFO L356 Elim1Store]: treesize reduction 50, result has 37.5 percent of original size [2022-07-12 03:17:52,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 66 treesize of output 82 [2022-07-12 03:17:52,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:17:52,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:52,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 42 [2022-07-12 03:17:52,807 INFO L356 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2022-07-12 03:17:52,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 143 treesize of output 101 [2022-07-12 03:17:53,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 34 [2022-07-12 03:17:53,077 INFO L356 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size [2022-07-12 03:17:53,077 INFO L390 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 7 new quantified variables, introduced 7 case distinctions, treesize of input 111 treesize of output 53 [2022-07-12 03:17:53,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 13 [2022-07-12 03:17:53,259 WARN L855 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_4724 (Array Int Int)) (v_ArrVal_4714 (Array Int Int)) (v_ArrVal_4716 (Array Int Int)) (v_ArrVal_4717 (Array Int Int))) (and (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4724) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_4717) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)) |c_#memory_$Pointer$.offset|) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_4714 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_4714) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_4716) |c_#memory_$Pointer$.base|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:17:53,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,327 INFO L356 Elim1Store]: treesize reduction 126, result has 8.0 percent of original size [2022-07-12 03:17:53,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 203 treesize of output 168 [2022-07-12 03:17:53,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 53 [2022-07-12 03:17:53,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-07-12 03:17:53,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:53,384 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-07-12 03:17:53,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2022-07-12 03:17:53,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-07-12 03:17:53,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:17:54,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:54,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:54,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:54,649 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-12 03:17:54,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 36 [2022-07-12 03:17:55,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:55,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:17:55,017 INFO L356 Elim1Store]: treesize reduction 48, result has 15.8 percent of original size [2022-07-12 03:17:55,017 INFO L390 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 7 new quantified variables, introduced 7 case distinctions, treesize of input 126 treesize of output 56 [2022-07-12 03:17:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 6 not checked. [2022-07-12 03:17:55,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:17:55,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90651228] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:17:55,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:17:55,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 51 [2022-07-12 03:17:55,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101779062] [2022-07-12 03:17:55,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:17:55,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-12 03:17:55,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:17:55,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-12 03:17:55,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2914, Unknown=11, NotChecked=108, Total=3192 [2022-07-12 03:17:55,747 INFO L87 Difference]: Start difference. First operand 267 states and 321 transitions. Second operand has 51 states, 43 states have (on average 2.116279069767442) internal successors, (91), 46 states have internal predecessors, (91), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 03:17:58,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:17:58,476 INFO L93 Difference]: Finished difference Result 353 states and 430 transitions. [2022-07-12 03:17:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-12 03:17:58,477 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 43 states have (on average 2.116279069767442) internal successors, (91), 46 states have internal predecessors, (91), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 59 [2022-07-12 03:17:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:17:58,479 INFO L225 Difference]: With dead ends: 353 [2022-07-12 03:17:58,479 INFO L226 Difference]: Without dead ends: 350 [2022-07-12 03:17:58,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=226, Invalid=3927, Unknown=11, NotChecked=126, Total=4290 [2022-07-12 03:17:58,481 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 53 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1065 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 03:17:58,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1632 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1775 Invalid, 0 Unknown, 1065 Unchecked, 1.3s Time] [2022-07-12 03:17:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-12 03:17:58,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 336. [2022-07-12 03:17:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 269 states have (on average 1.1635687732342008) internal successors, (313), 288 states have internal predecessors, (313), 49 states have call successors, (49), 18 states have call predecessors, (49), 17 states have return successors, (46), 29 states have call predecessors, (46), 40 states have call successors, (46) [2022-07-12 03:17:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 408 transitions. [2022-07-12 03:17:58,524 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 408 transitions. Word has length 59 [2022-07-12 03:17:58,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:17:58,524 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 408 transitions. [2022-07-12 03:17:58,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 43 states have (on average 2.116279069767442) internal successors, (91), 46 states have internal predecessors, (91), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 03:17:58,525 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 408 transitions. [2022-07-12 03:17:58,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 03:17:58,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:17:58,526 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:17:58,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 03:17:58,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 03:17:58,740 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:17:58,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:17:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash -186573861, now seen corresponding path program 1 times [2022-07-12 03:17:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:17:58,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772970044] [2022-07-12 03:17:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:17:58,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:17:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:59,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:17:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:17:59,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:17:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:00,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:18:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:01,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 03:18:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:03,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 03:18:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 03:18:03,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:18:03,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772970044] [2022-07-12 03:18:03,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772970044] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:18:03,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87550894] [2022-07-12 03:18:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:18:03,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:18:03,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:18:03,094 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:18:03,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 03:18:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:03,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 220 conjunts are in the unsatisfiable core [2022-07-12 03:18:03,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:18:03,500 INFO L356 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-07-12 03:18:03,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2022-07-12 03:18:05,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2022-07-12 03:18:05,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2022-07-12 03:18:05,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2022-07-12 03:18:05,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2022-07-12 03:18:05,340 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 17 [2022-07-12 03:18:05,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 17 [2022-07-12 03:18:05,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-07-12 03:18:05,364 INFO L356 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2022-07-12 03:18:05,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 25 treesize of output 29 [2022-07-12 03:18:05,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2022-07-12 03:18:05,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 46 [2022-07-12 03:18:05,561 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-07-12 03:18:05,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 84 treesize of output 64 [2022-07-12 03:18:05,681 INFO L356 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-07-12 03:18:05,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 80 treesize of output 39 [2022-07-12 03:18:05,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-07-12 03:18:05,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-12 03:18:05,857 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5154 (Array Int Int)) (v_ArrVal_5155 (Array Int Int)) (v_ArrVal_5166 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_~node~0#1.offset| Int)) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= |c_#memory_$Pointer$.base| (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_5154 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5154) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse0 |c_chain_node_#in~ppnode#1.base| (store (select .cse0 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)))) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_5155 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5155) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5166)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:18:05,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 52 [2022-07-12 03:18:05,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:05,926 INFO L356 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2022-07-12 03:18:05,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 87 [2022-07-12 03:18:05,935 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 63 [2022-07-12 03:18:05,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-07-12 03:18:05,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-07-12 03:18:05,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-07-12 03:18:05,986 INFO L356 Elim1Store]: treesize reduction 64, result has 35.4 percent of original size [2022-07-12 03:18:05,987 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 53 [2022-07-12 03:18:06,302 INFO L356 Elim1Store]: treesize reduction 112, result has 11.8 percent of original size [2022-07-12 03:18:06,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 150 treesize of output 111 [2022-07-12 03:18:06,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 51 [2022-07-12 03:18:06,532 INFO L356 Elim1Store]: treesize reduction 92, result has 8.9 percent of original size [2022-07-12 03:18:06,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 146 treesize of output 80 [2022-07-12 03:18:06,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 33 treesize of output 13 [2022-07-12 03:18:06,547 INFO L390 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 16 treesize of output 10 [2022-07-12 03:18:06,670 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5176 (Array Int Int)) (v_ArrVal_5178 (Array Int Int)) (|chain_node_~ppnode#1.offset| Int) (|chain_node_~node~0#1.base| Int) (v_ArrVal_5172 (Array Int Int)) (|chain_node_~node~0#1.offset| Int) (v_ArrVal_5173 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5176) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5178)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_5172 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5172) |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5173)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:18:06,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,715 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 61 [2022-07-12 03:18:06,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:06,766 INFO L356 Elim1Store]: treesize reduction 142, result has 12.3 percent of original size [2022-07-12 03:18:06,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 155 treesize of output 144 [2022-07-12 03:18:06,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-12 03:18:06,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 50 [2022-07-12 03:18:06,821 INFO L356 Elim1Store]: treesize reduction 78, result has 36.1 percent of original size [2022-07-12 03:18:06,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 61 [2022-07-12 03:18:06,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:18:07,139 INFO L356 Elim1Store]: treesize reduction 69, result has 5.5 percent of original size [2022-07-12 03:18:07,140 INFO L390 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 151 treesize of output 81 [2022-07-12 03:18:07,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:07,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:07,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2022-07-12 03:18:07,154 INFO L390 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 21 treesize of output 13 [2022-07-12 03:18:07,255 WARN L855 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_5183 (Array Int Int)) (v_ArrVal_5182 (Array Int Int)) (v_ArrVal_5185 (Array Int Int)) (v_ArrVal_5184 (Array Int Int))) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5185) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5183) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5182) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5184)) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) is different from true [2022-07-12 03:18:07,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:07,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:07,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:07,322 INFO L356 Elim1Store]: treesize reduction 108, result has 9.2 percent of original size [2022-07-12 03:18:07,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 182 treesize of output 163 [2022-07-12 03:18:07,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:07,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:07,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:07,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:07,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:07,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:07,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 56 [2022-07-12 03:18:07,367 INFO L356 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2022-07-12 03:18:07,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 40 [2022-07-12 03:18:10,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:10,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:10,794 INFO L356 Elim1Store]: treesize reduction 86, result has 8.5 percent of original size [2022-07-12 03:18:10,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 157 treesize of output 88 [2022-07-12 03:18:10,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:10,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:18:10,806 INFO L356 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-07-12 03:18:10,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 24 [2022-07-12 03:18:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 12 not checked. [2022-07-12 03:18:10,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:18:11,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87550894] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:18:11,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 03:18:11,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26] total 40 [2022-07-12 03:18:11,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284169911] [2022-07-12 03:18:11,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 03:18:11,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-12 03:18:11,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:18:11,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-12 03:18:11,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1307, Unknown=8, NotChecked=228, Total=1722 [2022-07-12 03:18:11,207 INFO L87 Difference]: Start difference. First operand 336 states and 408 transitions. Second operand has 40 states, 35 states have (on average 2.657142857142857) internal successors, (93), 38 states have internal predecessors, (93), 10 states have call successors, (10), 5 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-12 03:18:12,802 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5143 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (v_ArrVal_5138 Int) (v_ArrVal_5135 Int) (v_ArrVal_5140 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (let ((.cse0 (store (store (select |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base|) 0 v_ArrVal_5138) 4 0))) (store .cse0 0 (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| .cse0) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|)))) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5140) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|))) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (let ((.cse1 (store (store (select |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base|) 0 v_ArrVal_5135) 4 0))) (store .cse1 0 (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| .cse1) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|)))) |c_chain_node_#in~ppnode#1.base| (store (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5143) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| 0)) |c_#memory_$Pointer$.offset|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) (exists ((v_ArrVal_5154 (Array Int Int)) (v_ArrVal_5155 (Array Int Int)) (v_ArrVal_5166 (Array Int Int)) (|chain_node_~node~0#1.base| Int) (|chain_node_~node~0#1.offset| Int)) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= |c_#memory_$Pointer$.base| (let ((.cse2 (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| (store v_ArrVal_5154 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5154) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))))) (store .cse2 |c_chain_node_#in~ppnode#1.base| (store (select .cse2 |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset| |chain_node_~node~0#1.base|)))) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_5155 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5155) |c_chain_node_#in~ppnode#1.base|) |c_chain_node_#in~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5166)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_5183 (Array Int Int)) (v_ArrVal_5182 (Array Int Int)) (v_ArrVal_5185 (Array Int Int)) (v_ArrVal_5184 (Array Int Int))) (and (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5185) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5183) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5182) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5184)) (<= (+ |chain_node_~node~0#1.base| 1) |c_#StackHeapBarrier|) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0))) (exists ((v_ArrVal_5176 (Array Int Int)) (v_ArrVal_5178 (Array Int Int)) (|chain_node_~ppnode#1.offset| Int) (|chain_node_~node~0#1.base| Int) (v_ArrVal_5172 (Array Int Int)) (|chain_node_~node~0#1.offset| Int) (v_ArrVal_5173 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_5176) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5178)) (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |chain_node_~node~0#1.base| 1)) (= |c_#memory_$Pointer$.offset| (store (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| (store v_ArrVal_5172 |chain_node_~node~0#1.offset| (select (select (store |c_old(#memory_$Pointer$.offset)| |chain_node_~node~0#1.base| v_ArrVal_5172) |c_chain_node_#in~ppnode#1.base|) |chain_node_~ppnode#1.offset|))) |c_chain_node_#in~ppnode#1.base| v_ArrVal_5173)) (= (select |c_old(#valid)| |chain_node_~node~0#1.base|) 0)))) is different from true [2022-07-12 03:18:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:18:15,610 INFO L93 Difference]: Finished difference Result 484 states and 577 transitions. [2022-07-12 03:18:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 03:18:15,611 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 2.657142857142857) internal successors, (93), 38 states have internal predecessors, (93), 10 states have call successors, (10), 5 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 62 [2022-07-12 03:18:15,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:18:15,613 INFO L225 Difference]: With dead ends: 484 [2022-07-12 03:18:15,614 INFO L226 Difference]: Without dead ends: 481 [2022-07-12 03:18:15,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=276, Invalid=2179, Unknown=11, NotChecked=396, Total=2862 [2022-07-12 03:18:15,615 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 80 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 917 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 03:18:15,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 992 Invalid, 2047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1097 Invalid, 0 Unknown, 917 Unchecked, 0.8s Time] [2022-07-12 03:18:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-07-12 03:18:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 391. [2022-07-12 03:18:15,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 311 states have (on average 1.1639871382636655) internal successors, (362), 331 states have internal predecessors, (362), 57 states have call successors, (57), 23 states have call predecessors, (57), 22 states have return successors, (55), 36 states have call predecessors, (55), 48 states have call successors, (55) [2022-07-12 03:18:15,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 474 transitions. [2022-07-12 03:18:15,688 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 474 transitions. Word has length 62 [2022-07-12 03:18:15,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:18:15,689 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 474 transitions. [2022-07-12 03:18:15,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 2.657142857142857) internal successors, (93), 38 states have internal predecessors, (93), 10 states have call successors, (10), 5 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-12 03:18:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 474 transitions. [2022-07-12 03:18:15,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 03:18:15,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:18:15,691 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:18:15,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 03:18:15,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 03:18:15,905 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:18:15,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:18:15,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1802853032, now seen corresponding path program 1 times [2022-07-12 03:18:15,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:18:15,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605999333] [2022-07-12 03:18:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:18:15,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:18:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:15,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:18:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:15,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:18:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:15,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 03:18:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:15,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 03:18:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 03:18:16,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:18:16,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605999333] [2022-07-12 03:18:16,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605999333] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:18:16,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606180299] [2022-07-12 03:18:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:18:16,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:18:16,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:18:16,036 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:18:16,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 03:18:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:16,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-12 03:18:16,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:18:16,428 INFO L390 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 17 [2022-07-12 03:18:16,434 INFO L390 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 13 [2022-07-12 03:18:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 03:18:16,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:18:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 03:18:16,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606180299] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:18:16,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:18:16,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 12 [2022-07-12 03:18:16,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734680561] [2022-07-12 03:18:16,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:18:16,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 03:18:16,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:18:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 03:18:16,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-12 03:18:16,589 INFO L87 Difference]: Start difference. First operand 391 states and 474 transitions. Second operand has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 03:18:16,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:18:16,952 INFO L93 Difference]: Finished difference Result 418 states and 508 transitions. [2022-07-12 03:18:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 03:18:16,953 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 63 [2022-07-12 03:18:16,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:18:16,954 INFO L225 Difference]: With dead ends: 418 [2022-07-12 03:18:16,954 INFO L226 Difference]: Without dead ends: 415 [2022-07-12 03:18:16,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-07-12 03:18:16,955 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 87 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:18:16,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 513 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 359 Invalid, 0 Unknown, 131 Unchecked, 0.2s Time] [2022-07-12 03:18:16,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-12 03:18:17,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 399. [2022-07-12 03:18:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 318 states have (on average 1.1635220125786163) internal successors, (370), 338 states have internal predecessors, (370), 58 states have call successors, (58), 24 states have call predecessors, (58), 22 states have return successors, (56), 36 states have call predecessors, (56), 49 states have call successors, (56) [2022-07-12 03:18:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 484 transitions. [2022-07-12 03:18:17,010 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 484 transitions. Word has length 63 [2022-07-12 03:18:17,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:18:17,011 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 484 transitions. [2022-07-12 03:18:17,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 5.888888888888889) internal successors, (53), 11 states have internal predecessors, (53), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 03:18:17,011 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 484 transitions. [2022-07-12 03:18:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 03:18:17,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:18:17,012 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:18:17,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 03:18:17,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:18:17,232 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:18:17,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:18:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1473312201, now seen corresponding path program 2 times [2022-07-12 03:18:17,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:18:17,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282567766] [2022-07-12 03:18:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:18:17,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:18:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:17,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 03:18:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:17,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 03:18:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 03:18:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 03:18:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:18:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 03:18:22,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:18:22,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282567766] [2022-07-12 03:18:22,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282567766] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:18:22,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543626005] [2022-07-12 03:18:22,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 03:18:22,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:18:22,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:18:22,275 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:18:22,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 03:18:22,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 03:18:22,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:18:22,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 265 conjunts are in the unsatisfiable core [2022-07-12 03:18:22,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:18:22,677 INFO L356 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-07-12 03:18:22,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 34 [2022-07-12 03:18:22,793 INFO L390 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 16 treesize of output 10 [2022-07-12 03:18:23,288 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:18:23,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:18:23,310 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 03:18:23,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-07-12 03:18:23,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:18:23,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:18:23,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 03:18:23,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 03:18:23,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 15 [2022-07-12 03:18:23,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:18:23,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:23,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 9 [2022-07-12 03:18:23,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-12 03:18:23,927 INFO L356 Elim1Store]: treesize reduction 127, result has 42.3 percent of original size [2022-07-12 03:18:23,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 203 treesize of output 366 [2022-07-12 03:18:24,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:24,043 INFO L356 Elim1Store]: treesize reduction 204, result has 0.5 percent of original size [2022-07-12 03:18:24,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 77 treesize of output 70 [2022-07-12 03:18:24,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:24,095 INFO L356 Elim1Store]: treesize reduction 204, result has 0.5 percent of original size [2022-07-12 03:18:24,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 77 treesize of output 70 [2022-07-12 03:18:24,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 67 [2022-07-12 03:18:24,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 03:18:24,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 112 [2022-07-12 03:18:24,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 307 treesize of output 285 [2022-07-12 03:18:24,851 INFO L356 Elim1Store]: treesize reduction 484, result has 28.9 percent of original size [2022-07-12 03:18:24,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 285 treesize of output 649 [2022-07-12 03:18:25,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 230 [2022-07-12 03:18:25,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 139 [2022-07-12 03:18:25,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 139 [2022-07-12 03:18:26,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 142 [2022-07-12 03:18:26,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 142 [2022-07-12 03:18:26,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 139 [2022-07-12 03:18:26,264 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 139 [2022-07-12 03:18:26,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 139 [2022-07-12 03:18:26,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 139 [2022-07-12 03:18:26,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 136 [2022-07-12 03:18:26,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 136 [2022-07-12 03:18:27,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 136 [2022-07-12 03:18:27,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 136 [2022-07-12 03:18:27,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 139 [2022-07-12 03:18:28,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 139 [2022-07-12 03:18:28,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 136 [2022-07-12 03:18:28,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 136 [2022-07-12 03:18:28,808 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-12 03:18:28,820 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-12 03:18:29,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:29,175 INFO L356 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2022-07-12 03:18:29,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 42 treesize of output 11 [2022-07-12 03:18:29,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:29,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 42 treesize of output 11 [2022-07-12 03:18:29,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:29,668 INFO L356 Elim1Store]: treesize reduction 66, result has 13.2 percent of original size [2022-07-12 03:18:29,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 52 treesize of output 27 [2022-07-12 03:18:29,991 INFO L356 Elim1Store]: treesize reduction 37, result has 21.3 percent of original size [2022-07-12 03:18:29,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 24 [2022-07-12 03:18:30,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:30,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 14 [2022-07-12 03:18:30,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:30,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 42 treesize of output 11 [2022-07-12 03:18:30,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:30,820 INFO L356 Elim1Store]: treesize reduction 127, result has 12.4 percent of original size [2022-07-12 03:18:30,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 89 treesize of output 133 [2022-07-12 03:18:30,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:30,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:30,913 INFO L356 Elim1Store]: treesize reduction 75, result has 1.3 percent of original size [2022-07-12 03:18:30,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 82 treesize of output 21 [2022-07-12 03:18:30,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 425 treesize of output 409 [2022-07-12 03:18:31,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 286 treesize of output 268 [2022-07-12 03:18:31,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 426 treesize of output 404 [2022-07-12 03:18:32,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 409 treesize of output 387 [2022-07-12 03:18:32,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 416 [2022-07-12 03:18:33,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 556 treesize of output 530 [2022-07-12 03:18:34,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 398 treesize of output 378 [2022-07-12 03:18:34,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 259 [2022-07-12 03:18:35,118 INFO L356 Elim1Store]: treesize reduction 492, result has 9.1 percent of original size [2022-07-12 03:18:35,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 251 treesize of output 314 [2022-07-12 03:18:35,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:18:35,407 INFO L356 Elim1Store]: treesize reduction 270, result has 0.4 percent of original size [2022-07-12 03:18:35,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 26 [2022-07-12 03:18:35,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2022-07-12 03:18:55,013 WARN L233 SmtUtils]: Spent 19.41s on a formula simplification. DAG size of input: 450 DAG size of output: 148 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-07-12 03:18:55,013 INFO L356 Elim1Store]: treesize reduction 1980, result has 13.2 percent of original size [2022-07-12 03:18:55,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 7 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 13 new quantified variables, introduced 68 case distinctions, treesize of input 485 treesize of output 1753