./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-data/shared_mem1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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-data/shared_mem1.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 47cb7cab177485da5df0f1af4a3f61fd7eb970990493dd3ac764f888774cbf0f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 23:55:12,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:55:12,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:55:12,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:55:12,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:55:12,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:55:12,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:55:12,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:55:12,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:55:12,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:55:12,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:55:12,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:55:12,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:55:12,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:55:12,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:55:12,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:55:12,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:55:12,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:55:12,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:55:12,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:55:12,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:55:12,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:55:12,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:55:12,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:55:12,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:55:12,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:55:12,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:55:12,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:55:12,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:55:12,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:55:12,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:55:12,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:55:12,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:55:12,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:55:12,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:55:12,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:55:12,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:55:12,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:55:12,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:55:12,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:55:12,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:55:12,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 23:55:12,511 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:55:12,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:55:12,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:55:12,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:55:12,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:55:12,513 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:55:12,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:55:12,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:55:12,514 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:55:12,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:55:12,514 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:55:12,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 23:55:12,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:55:12,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:55:12,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:55:12,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:55:12,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:55:12,515 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:55:12,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:55:12,516 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:55:12,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:55:12,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:55:12,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:55:12,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:55:12,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:55:12,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:55:12,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:55:12,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:55:12,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 23:55:12,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 23:55:12,517 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:55:12,517 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:55:12,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:55:12,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47cb7cab177485da5df0f1af4a3f61fd7eb970990493dd3ac764f888774cbf0f [2021-12-27 23:55:12,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:55:12,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:55:12,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:55:12,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:55:12,758 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:55:12,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/shared_mem1.i [2021-12-27 23:55:12,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909e3b0bf/ed773210a88e48e28cb4fc8590d33d07/FLAG0dc68955e [2021-12-27 23:55:13,231 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:55:13,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/shared_mem1.i [2021-12-27 23:55:13,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909e3b0bf/ed773210a88e48e28cb4fc8590d33d07/FLAG0dc68955e [2021-12-27 23:55:13,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909e3b0bf/ed773210a88e48e28cb4fc8590d33d07 [2021-12-27 23:55:13,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:55:13,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:55:13,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:55:13,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:55:13,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:55:13,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f65316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13, skipping insertion in model container [2021-12-27 23:55:13,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:55:13,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:55:13,464 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-data/shared_mem1.i[23879,23892] [2021-12-27 23:55:13,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:55:13,476 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:55:13,499 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-data/shared_mem1.i[23879,23892] [2021-12-27 23:55:13,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:55:13,516 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:55:13,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13 WrapperNode [2021-12-27 23:55:13,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:55:13,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:55:13,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:55:13,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:55:13,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,560 INFO L137 Inliner]: procedures = 121, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2021-12-27 23:55:13,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:55:13,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:55:13,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:55:13,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:55:13,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:55:13,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:55:13,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:55:13,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:55:13,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13" (1/1) ... [2021-12-27 23:55:13,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:55:13,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:55:13,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-27 23:55:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-27 23:55:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-27 23:55:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-27 23:55:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:55:13,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-27 23:55:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-27 23:55:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 23:55:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:55:13,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:55:13,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-27 23:55:13,808 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:55:13,809 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:55:13,929 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:55:13,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:55:13,933 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-27 23:55:13,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:55:13 BoogieIcfgContainer [2021-12-27 23:55:13,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:55:13,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:55:13,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:55:13,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:55:13,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:55:13" (1/3) ... [2021-12-27 23:55:13,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1717ee82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:55:13, skipping insertion in model container [2021-12-27 23:55:13,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:55:13" (2/3) ... [2021-12-27 23:55:13,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1717ee82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:55:13, skipping insertion in model container [2021-12-27 23:55:13,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:55:13" (3/3) ... [2021-12-27 23:55:13,940 INFO L111 eAbstractionObserver]: Analyzing ICFG shared_mem1.i [2021-12-27 23:55:13,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:55:13,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:55:13,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:55:13,980 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 23:55:13,981 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:55:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:14,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-27 23:55:14,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:55:14,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:55:14,002 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:55:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:55:14,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1650103796, now seen corresponding path program 1 times [2021-12-27 23:55:14,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:55:14,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960639233] [2021-12-27 23:55:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:14,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:55:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:14,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:55:14,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960639233] [2021-12-27 23:55:14,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960639233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:55:14,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:55:14,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 23:55:14,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90593247] [2021-12-27 23:55:14,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:55:14,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 23:55:14,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:55:14,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 23:55:14,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:55:14,206 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:14,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:55:14,216 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-12-27 23:55:14,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 23:55:14,218 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-27 23:55:14,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:55:14,222 INFO L225 Difference]: With dead ends: 27 [2021-12-27 23:55:14,223 INFO L226 Difference]: Without dead ends: 13 [2021-12-27 23:55:14,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:55:14,227 INFO L933 BasicCegarLoop]: 20 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, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 23:55:14,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:55:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-27 23:55:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-27 23:55:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-12-27 23:55:14,246 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 10 [2021-12-27 23:55:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:55:14,247 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-27 23:55:14,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2021-12-27 23:55:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-27 23:55:14,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:55:14,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:55:14,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 23:55:14,249 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:55:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:55:14,251 INFO L85 PathProgramCache]: Analyzing trace with hash -812668617, now seen corresponding path program 1 times [2021-12-27 23:55:14,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:55:14,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158319459] [2021-12-27 23:55:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:14,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:55:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:14,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:55:14,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158319459] [2021-12-27 23:55:14,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158319459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:55:14,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:55:14,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-27 23:55:14,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958812729] [2021-12-27 23:55:14,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:55:14,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-27 23:55:14,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:55:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-27 23:55:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-27 23:55:14,604 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:14,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:55:14,769 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-12-27 23:55:14,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-27 23:55:14,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-27 23:55:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:55:14,772 INFO L225 Difference]: With dead ends: 29 [2021-12-27 23:55:14,772 INFO L226 Difference]: Without dead ends: 27 [2021-12-27 23:55:14,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-27 23:55:14,776 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 23:55:14,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 23:55:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-27 23:55:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-12-27 23:55:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2021-12-27 23:55:14,787 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 11 [2021-12-27 23:55:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:55:14,788 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2021-12-27 23:55:14,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:14,791 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2021-12-27 23:55:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-27 23:55:14,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:55:14,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:55:14,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-27 23:55:14,792 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:55:14,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:55:14,792 INFO L85 PathProgramCache]: Analyzing trace with hash -812666695, now seen corresponding path program 1 times [2021-12-27 23:55:14,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:55:14,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916272909] [2021-12-27 23:55:14,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:14,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:55:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:14,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:55:14,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916272909] [2021-12-27 23:55:14,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916272909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:55:14,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:55:14,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-27 23:55:14,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457822020] [2021-12-27 23:55:14,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:55:14,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-27 23:55:14,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:55:14,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-27 23:55:14,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-27 23:55:14,948 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:55:15,047 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2021-12-27 23:55:15,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-27 23:55:15,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-27 23:55:15,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:55:15,049 INFO L225 Difference]: With dead ends: 31 [2021-12-27 23:55:15,049 INFO L226 Difference]: Without dead ends: 24 [2021-12-27 23:55:15,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-27 23:55:15,054 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 23:55:15,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 38 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 23:55:15,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-27 23:55:15,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-12-27 23:55:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-12-27 23:55:15,060 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 11 [2021-12-27 23:55:15,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:55:15,060 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-12-27 23:55:15,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:15,060 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2021-12-27 23:55:15,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-27 23:55:15,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:55:15,061 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:55:15,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-27 23:55:15,061 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:55:15,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:55:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1760681901, now seen corresponding path program 1 times [2021-12-27 23:55:15,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:55:15,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020393723] [2021-12-27 23:55:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:15,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:55:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:15,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:55:15,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020393723] [2021-12-27 23:55:15,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020393723] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:55:15,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953679991] [2021-12-27 23:55:15,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:15,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:15,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:55:15,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 23:55:15,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-27 23:55:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:15,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-27 23:55:15,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:55:15,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,467 INFO L387 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 18 treesize of output 19 [2021-12-27 23:55:15,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,472 INFO L387 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 18 treesize of output 19 [2021-12-27 23:55:15,489 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-27 23:55:15,490 INFO L387 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-27 23:55:15,522 INFO L353 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2021-12-27 23:55:15,522 INFO L387 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 56 treesize of output 71 [2021-12-27 23:55:15,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,540 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-27 23:55:15,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 42 [2021-12-27 23:55:15,588 INFO L387 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 49 treesize of output 41 [2021-12-27 23:55:15,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,594 INFO L387 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 36 treesize of output 26 [2021-12-27 23:55:15,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,624 INFO L387 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2021-12-27 23:55:15,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,728 INFO L387 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 26 treesize of output 23 [2021-12-27 23:55:15,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,736 INFO L387 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 26 treesize of output 23 [2021-12-27 23:55:15,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,746 INFO L387 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 21 [2021-12-27 23:55:15,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,753 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-12-27 23:55:15,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-27 23:55:15,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:15,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-27 23:55:15,772 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-27 23:55:15,772 INFO L387 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 11 [2021-12-27 23:55:15,899 INFO L387 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 67 treesize of output 47 [2021-12-27 23:55:15,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 23:55:15,918 INFO L353 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2021-12-27 23:55:15,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 42 [2021-12-27 23:55:15,928 INFO L387 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 [2021-12-27 23:55:16,059 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:55:16,060 INFO L387 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 41 treesize of output 29 [2021-12-27 23:55:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:16,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 23:55:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:16,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953679991] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 23:55:16,502 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 23:55:16,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2021-12-27 23:55:16,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369176682] [2021-12-27 23:55:16,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 23:55:16,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-27 23:55:16,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:55:16,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-27 23:55:16,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-12-27 23:55:16,503 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:55:16,760 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2021-12-27 23:55:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-27 23:55:16,760 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-27 23:55:16,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:55:16,761 INFO L225 Difference]: With dead ends: 47 [2021-12-27 23:55:16,761 INFO L226 Difference]: Without dead ends: 45 [2021-12-27 23:55:16,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2021-12-27 23:55:16,762 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 62 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 23:55:16,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 92 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2021-12-27 23:55:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-27 23:55:16,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2021-12-27 23:55:16,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:16,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2021-12-27 23:55:16,765 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 14 [2021-12-27 23:55:16,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:55:16,766 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-12-27 23:55:16,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:16,766 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2021-12-27 23:55:16,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-27 23:55:16,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:55:16,767 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:55:16,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-27 23:55:16,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:16,982 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:55:16,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:55:16,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1760679979, now seen corresponding path program 1 times [2021-12-27 23:55:16,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:55:16,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620907681] [2021-12-27 23:55:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:16,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:55:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:17,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:55:17,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620907681] [2021-12-27 23:55:17,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620907681] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:55:17,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503564014] [2021-12-27 23:55:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:17,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:17,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:55:17,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 23:55:17,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-27 23:55:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:17,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-27 23:55:17,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:55:17,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,258 INFO L387 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 18 treesize of output 19 [2021-12-27 23:55:17,271 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-27 23:55:17,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-27 23:55:17,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,286 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2021-12-27 23:55:17,290 INFO L387 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 30 treesize of output 30 [2021-12-27 23:55:17,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-27 23:55:17,300 INFO L387 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 [2021-12-27 23:55:17,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-12-27 23:55:17,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,408 INFO L387 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 26 treesize of output 23 [2021-12-27 23:55:17,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,416 INFO L387 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 26 treesize of output 23 [2021-12-27 23:55:17,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,424 INFO L387 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 31 treesize of output 31 [2021-12-27 23:55:17,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-27 23:55:17,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-27 23:55:17,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:17,444 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-12-27 23:55:17,458 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-27 23:55:17,459 INFO L387 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 16 treesize of output 18 [2021-12-27 23:55:17,575 INFO L387 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 52 treesize of output 36 [2021-12-27 23:55:17,579 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 30 [2021-12-27 23:55:17,585 INFO L387 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 25 treesize of output 17 [2021-12-27 23:55:17,614 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-27 23:55:17,614 INFO L387 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 [2021-12-27 23:55:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:17,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 23:55:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:17,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503564014] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 23:55:17,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 23:55:17,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2021-12-27 23:55:17,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231767170] [2021-12-27 23:55:17,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 23:55:17,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-27 23:55:17,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:55:17,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-27 23:55:17,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=180, Unknown=2, NotChecked=0, Total=240 [2021-12-27 23:55:17,932 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:18,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:55:18,097 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2021-12-27 23:55:18,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-27 23:55:18,097 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-27 23:55:18,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:55:18,098 INFO L225 Difference]: With dead ends: 44 [2021-12-27 23:55:18,098 INFO L226 Difference]: Without dead ends: 34 [2021-12-27 23:55:18,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=245, Unknown=2, NotChecked=0, Total=342 [2021-12-27 23:55:18,099 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 23:55:18,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2021-12-27 23:55:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-27 23:55:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2021-12-27 23:55:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:18,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2021-12-27 23:55:18,102 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 14 [2021-12-27 23:55:18,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:55:18,103 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-12-27 23:55:18,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:18,103 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2021-12-27 23:55:18,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-27 23:55:18,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:55:18,104 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:55:18,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-27 23:55:18,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:18,319 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:55:18,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:55:18,320 INFO L85 PathProgramCache]: Analyzing trace with hash 187961508, now seen corresponding path program 1 times [2021-12-27 23:55:18,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:55:18,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966618983] [2021-12-27 23:55:18,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:18,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:55:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:18,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:55:18,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966618983] [2021-12-27 23:55:18,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966618983] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:55:18,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718096537] [2021-12-27 23:55:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:18,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:18,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:55:18,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 23:55:18,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-27 23:55:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:18,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-27 23:55:18,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:55:18,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:18,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:18,696 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2021-12-27 23:55:18,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:18,700 INFO L387 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 30 treesize of output 30 [2021-12-27 23:55:18,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:18,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:18,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:18,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-27 23:55:18,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:18,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:18,713 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-12-27 23:55:18,716 INFO L387 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 14 treesize of output 13 [2021-12-27 23:55:18,720 INFO L387 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 14 [2021-12-27 23:55:18,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:18,728 INFO L387 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 18 treesize of output 19 [2021-12-27 23:55:18,843 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-27 23:55:18,844 INFO L387 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 111 treesize of output 102 [2021-12-27 23:55:18,849 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 38 [2021-12-27 23:55:18,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2021-12-27 23:55:18,966 INFO L387 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 44 treesize of output 32 [2021-12-27 23:55:18,972 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-27 23:55:18,972 INFO L387 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 36 treesize of output 16 [2021-12-27 23:55:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:18,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 23:55:19,066 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_515 (Array Int Int)) (v_ArrVal_516 (Array Int Int)) (v_ArrVal_514 Int)) (let ((.cse8 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse8))) (let ((.cse0 (select |c_#memory_int| .cse2)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse8))) (or (not (<= (+ (select .cse0 .cse1) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) v_ArrVal_514)) (<= 101 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_516)) (.cse3 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_515)) (.cse7 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse7)) (.cse5 (+ 4 (select (select .cse6 |c_ULTIMATE.start_main_~list~0#1.base|) .cse7)))) (select (select (store |c_#memory_int| .cse2 (store .cse0 .cse1 v_ArrVal_514)) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5)))))))))) is different from false [2021-12-27 23:55:19,102 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_515 (Array Int Int)) (v_ArrVal_516 (Array Int Int)) (v_ArrVal_514 Int)) (let ((.cse8 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (let ((.cse1 (select |c_#memory_int| .cse0)) (.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (or (<= 101 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_516)) (.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_515)) (.cse7 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~head~0#1.base|) .cse7)) (.cse5 (+ 4 (select (select .cse6 |c_ULTIMATE.start_main_~head~0#1.base|) .cse7)))) (select (select (store |c_#memory_int| .cse0 (store .cse1 .cse2 v_ArrVal_514)) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5))))) (not (<= (+ (select .cse1 .cse2) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) v_ArrVal_514))))))) is different from false [2021-12-27 23:55:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-27 23:55:19,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718096537] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 23:55:19,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 23:55:19,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 7] total 20 [2021-12-27 23:55:19,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740315086] [2021-12-27 23:55:19,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 23:55:19,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-27 23:55:19,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:55:19,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-27 23:55:19,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=261, Unknown=2, NotChecked=66, Total=380 [2021-12-27 23:55:19,149 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:20,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:55:20,125 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2021-12-27 23:55:20,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-27 23:55:20,126 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-27 23:55:20,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:55:20,126 INFO L225 Difference]: With dead ends: 79 [2021-12-27 23:55:20,126 INFO L226 Difference]: Without dead ends: 72 [2021-12-27 23:55:20,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=202, Invalid=734, Unknown=2, NotChecked=118, Total=1056 [2021-12-27 23:55:20,127 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 105 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-27 23:55:20,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 149 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 174 Invalid, 0 Unknown, 74 Unchecked, 0.2s Time] [2021-12-27 23:55:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-27 23:55:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 55. [2021-12-27 23:55:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2021-12-27 23:55:20,133 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 16 [2021-12-27 23:55:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:55:20,133 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2021-12-27 23:55:20,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2021-12-27 23:55:20,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-27 23:55:20,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:55:20,134 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:55:20,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-27 23:55:20,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:20,347 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:55:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:55:20,348 INFO L85 PathProgramCache]: Analyzing trace with hash 189810472, now seen corresponding path program 1 times [2021-12-27 23:55:20,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:55:20,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210457224] [2021-12-27 23:55:20,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:20,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:55:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:20,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:55:20,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210457224] [2021-12-27 23:55:20,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210457224] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:55:20,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990868842] [2021-12-27 23:55:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:20,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:20,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:55:20,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 23:55:20,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-27 23:55:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:20,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-27 23:55:20,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:55:20,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:20,677 INFO L387 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 18 treesize of output 19 [2021-12-27 23:55:20,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-27 23:55:20,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:20,689 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-12-27 23:55:20,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:20,697 INFO L387 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 24 [2021-12-27 23:55:20,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:20,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:20,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:20,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-27 23:55:20,835 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-27 23:55:20,836 INFO L387 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 52 [2021-12-27 23:55:20,840 INFO L387 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 20 treesize of output 22 [2021-12-27 23:55:20,843 INFO L387 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 31 treesize of output 31 [2021-12-27 23:55:20,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 74 treesize of output 50 [2021-12-27 23:55:20,999 INFO L387 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 51 treesize of output 30 [2021-12-27 23:55:21,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 32 treesize of output 20 [2021-12-27 23:55:21,033 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-27 23:55:21,034 INFO L387 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 [2021-12-27 23:55:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-27 23:55:21,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 23:55:25,236 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_612 (Array Int Int)) (v_ArrVal_614 (Array Int Int)) (v_ArrVal_613 (Array Int Int)) (v_ArrVal_615 Int)) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_613)) (.cse11 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~list~0#1.base|) .cse11)) (.cse9 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_612))) (let ((.cse5 (select (select .cse9 |c_ULTIMATE.start_main_~list~0#1.base|) .cse11)) (.cse8 (+ .cse6 4))) (let ((.cse0 (store |c_#memory_int| .cse10 v_ArrVal_614)) (.cse1 (select (select .cse9 .cse5) .cse8))) (let ((.cse2 (select .cse0 .cse1)) (.cse3 (select (select .cse7 .cse5) .cse8))) (let ((.cse4 (select .cse2 .cse3))) (or (<= 91 (select (select (store .cse0 .cse1 (store .cse2 .cse3 v_ArrVal_615)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (<= .cse4 100) (not (<= .cse4 (+ v_ArrVal_615 (select (select .cse0 .cse5) .cse6))))))))))))) is different from false [2021-12-27 23:55:25,276 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_612 (Array Int Int)) (v_ArrVal_614 (Array Int Int)) (v_ArrVal_613 (Array Int Int)) (v_ArrVal_615 Int)) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_613)) (.cse11 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~head~0#1.base|) .cse11)) (.cse9 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_612))) (let ((.cse5 (select (select .cse9 |c_ULTIMATE.start_main_~head~0#1.base|) .cse11)) (.cse8 (+ 4 .cse6))) (let ((.cse0 (store |c_#memory_int| .cse10 v_ArrVal_614)) (.cse1 (select (select .cse9 .cse5) .cse8))) (let ((.cse2 (select .cse0 .cse1)) (.cse3 (select (select .cse7 .cse5) .cse8))) (let ((.cse4 (select .cse2 .cse3))) (or (<= 91 (select (select (store .cse0 .cse1 (store .cse2 .cse3 v_ArrVal_615)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (not (<= .cse4 (+ v_ArrVal_615 (select (select .cse0 .cse5) .cse6)))) (<= .cse4 100)))))))))) is different from false [2021-12-27 23:55:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-27 23:55:25,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990868842] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 23:55:25,333 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 23:55:25,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 9] total 19 [2021-12-27 23:55:25,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891703940] [2021-12-27 23:55:25,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 23:55:25,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-27 23:55:25,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:55:25,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-27 23:55:25,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=231, Unknown=2, NotChecked=62, Total=342 [2021-12-27 23:55:25,334 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:55:26,235 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2021-12-27 23:55:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-27 23:55:26,235 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-27 23:55:26,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:55:26,236 INFO L225 Difference]: With dead ends: 77 [2021-12-27 23:55:26,236 INFO L226 Difference]: Without dead ends: 54 [2021-12-27 23:55:26,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=156, Invalid=500, Unknown=2, NotChecked=98, Total=756 [2021-12-27 23:55:26,237 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 23:55:26,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 108 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 81 Invalid, 0 Unknown, 107 Unchecked, 0.1s Time] [2021-12-27 23:55:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-27 23:55:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-12-27 23:55:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 51 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:26,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-12-27 23:55:26,242 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 16 [2021-12-27 23:55:26,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:55:26,243 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-12-27 23:55:26,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-12-27 23:55:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-27 23:55:26,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:55:26,243 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:55:26,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-27 23:55:26,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:26,460 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:55:26,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:55:26,460 INFO L85 PathProgramCache]: Analyzing trace with hash -319487049, now seen corresponding path program 2 times [2021-12-27 23:55:26,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:55:26,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901703818] [2021-12-27 23:55:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:26,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:55:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-27 23:55:26,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:55:26,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901703818] [2021-12-27 23:55:26,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901703818] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:55:26,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340811170] [2021-12-27 23:55:26,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-27 23:55:26,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:26,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:55:26,662 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 23:55:26,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-27 23:55:26,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-27 23:55:26,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 23:55:26,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-27 23:55:26,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:55:26,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,791 INFO L387 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 18 treesize of output 19 [2021-12-27 23:55:26,817 INFO L353 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2021-12-27 23:55:26,817 INFO L387 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 56 treesize of output 71 [2021-12-27 23:55:26,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-27 23:55:26,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 42 [2021-12-27 23:55:26,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,863 INFO L387 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2021-12-27 23:55:26,889 INFO L387 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 56 treesize of output 46 [2021-12-27 23:55:26,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,894 INFO L387 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 41 treesize of output 29 [2021-12-27 23:55:26,914 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-27 23:55:26,914 INFO L387 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-27 23:55:26,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:26,921 INFO L387 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 18 treesize of output 19 [2021-12-27 23:55:27,034 INFO L353 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-27 23:55:27,034 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-12-27 23:55:27,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,044 INFO L387 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-27 23:55:27,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,054 INFO L387 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-12-27 23:55:27,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,063 INFO L387 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-27 23:55:27,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-27 23:55:27,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,095 INFO L353 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-27 23:55:27,095 INFO L387 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 1 case distinctions, treesize of input 25 treesize of output 38 [2021-12-27 23:55:27,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,105 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-12-27 23:55:27,118 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-27 23:55:27,119 INFO L387 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 17 treesize of output 21 [2021-12-27 23:55:27,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,304 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-27 23:55:27,304 INFO L387 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 1 case distinctions, treesize of input 57 treesize of output 57 [2021-12-27 23:55:27,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,315 INFO L387 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 26 treesize of output 23 [2021-12-27 23:55:27,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,324 INFO L387 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 21 [2021-12-27 23:55:27,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,341 INFO L353 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-27 23:55:27,341 INFO L387 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 1 case distinctions, treesize of input 29 treesize of output 42 [2021-12-27 23:55:27,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-12-27 23:55:27,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:27,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-27 23:55:27,368 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-27 23:55:27,369 INFO L387 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 11 [2021-12-27 23:55:27,395 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-27 23:55:27,395 INFO L387 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 7 [2021-12-27 23:55:27,509 INFO L387 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 67 treesize of output 47 [2021-12-27 23:55:27,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 23:55:27,526 INFO L353 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2021-12-27 23:55:27,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 42 [2021-12-27 23:55:27,529 INFO L387 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 [2021-12-27 23:55:27,706 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:55:27,707 INFO L387 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 41 treesize of output 29 [2021-12-27 23:55:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:27,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 23:55:28,094 INFO L353 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-12-27 23:55:28,095 INFO L387 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 775 treesize of output 671 [2021-12-27 23:55:28,656 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_8 (Array Int Int)) (v_ArrVal_816 Int) (v_ArrVal_849 Int) (v_ArrVal_848 Int) (v_ArrVal_826 Int) (v_ArrVal_846 Int) (v_ArrVal_832 Int) (v_ArrVal_830 Int) (v_ArrVal_841 Int) (v_ArrVal_843 (Array Int Int)) (v_ArrVal_831 (Array Int Int)) (v_ArrVal_842 (Array Int Int)) (|v_ULTIMATE.start_main_~n~0#1.offset_10| Int) (|v_ULTIMATE.start_main_~n~0#1.base_11| Int) (v_ArrVal_845 (Array Int Int)) (|v_ULTIMATE.start_main_~n~0#1.base_10| Int) (v_ArrVal_844 (Array Int Int)) (v_ArrVal_825 (Array Int Int)) (v_ArrVal_835 (Array Int Int)) (v_ArrVal_819 (Array Int Int))) (let ((.cse8 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) (.cse6 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse0 (let ((.cse10 (store (let ((.cse11 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_825))) (store .cse11 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse11 |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_816))) |v_ULTIMATE.start_main_~n~0#1.base_10| v_ArrVal_842))) (store .cse10 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_846)))) (.cse2 (select (select (let ((.cse9 (store (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_831) |c_ULTIMATE.start_main_~list~0#1.base| (store (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_819) |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_832)))) (store (store .cse9 |v_ULTIMATE.start_main_~n~0#1.base_10| v_ArrVal_845) |c_ULTIMATE.start_main_~list~0#1.base| (store (select (store .cse9 |v_ULTIMATE.start_main_~n~0#1.base_10| v_ArrVal_835) |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_848))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (let ((.cse3 (select .cse0 .cse2)) (.cse4 (select (select (let ((.cse5 (let ((.cse7 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_11| v_arrayElimArr_8))) (store .cse7 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_830))))) (store (store .cse5 |v_ULTIMATE.start_main_~n~0#1.base_10| v_ArrVal_843) |c_ULTIMATE.start_main_~list~0#1.base| (store (select (store .cse5 |v_ULTIMATE.start_main_~n~0#1.base_10| v_ArrVal_844) |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_841))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (let ((.cse1 (select .cse3 .cse4))) (or (not (<= v_ArrVal_849 (+ (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) .cse1))) (<= (select (select (store .cse0 .cse2 (store .cse3 .cse4 v_ArrVal_849)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109) (< 100 .cse1) (not (= (select v_arrayElimArr_8 (+ |v_ULTIMATE.start_main_~n~0#1.offset_10| 8)) |c_ULTIMATE.start_main_~head~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~m~0#1.offset| (select v_arrayElimArr_8 (+ |v_ULTIMATE.start_main_~n~0#1.offset_10| 4)))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_11|) 0)) (not (= (select (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_826) |v_ULTIMATE.start_main_~n~0#1.base_10|) 0)))))))) is different from false [2021-12-27 23:55:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-12-27 23:55:29,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340811170] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 23:55:29,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 23:55:29,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-12-27 23:55:29,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233880184] [2021-12-27 23:55:29,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 23:55:29,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-27 23:55:29,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:55:29,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-27 23:55:29,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=282, Unknown=1, NotChecked=34, Total=380 [2021-12-27 23:55:29,877 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:55:30,335 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2021-12-27 23:55:30,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-27 23:55:30,336 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-27 23:55:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:55:30,336 INFO L225 Difference]: With dead ends: 60 [2021-12-27 23:55:30,336 INFO L226 Difference]: Without dead ends: 58 [2021-12-27 23:55:30,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=413, Unknown=1, NotChecked=44, Total=600 [2021-12-27 23:55:30,337 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 23:55:30,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 83 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 53 Unchecked, 0.1s Time] [2021-12-27 23:55:30,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-27 23:55:30,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2021-12-27 23:55:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2021-12-27 23:55:30,341 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 17 [2021-12-27 23:55:30,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:55:30,341 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2021-12-27 23:55:30,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:30,341 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2021-12-27 23:55:30,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-27 23:55:30,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:55:30,342 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:55:30,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-27 23:55:30,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:30,555 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:55:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:55:30,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2098222328, now seen corresponding path program 1 times [2021-12-27 23:55:30,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:55:30,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772046375] [2021-12-27 23:55:30,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:30,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:55:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:30,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:55:30,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772046375] [2021-12-27 23:55:30,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772046375] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:55:30,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250999070] [2021-12-27 23:55:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:30,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:30,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:55:30,857 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 23:55:30,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-27 23:55:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:30,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-27 23:55:30,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:55:30,999 INFO L353 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2021-12-27 23:55:30,999 INFO L387 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 2 case distinctions, treesize of input 66 treesize of output 74 [2021-12-27 23:55:31,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 48 treesize of output 55 [2021-12-27 23:55:31,035 INFO L353 Elim1Store]: treesize reduction 43, result has 38.6 percent of original size [2021-12-27 23:55:31,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 89 [2021-12-27 23:55:31,057 INFO L387 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2021-12-27 23:55:31,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 64 treesize of output 69 [2021-12-27 23:55:31,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2021-12-27 23:55:31,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,173 INFO L387 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2021-12-27 23:55:31,198 INFO L387 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 63 treesize of output 51 [2021-12-27 23:55:31,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,202 INFO L387 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 41 treesize of output 29 [2021-12-27 23:55:31,221 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-27 23:55:31,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-27 23:55:31,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-12-27 23:55:31,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-12-27 23:55:31,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,356 INFO L387 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 32 treesize of output 29 [2021-12-27 23:55:31,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,362 INFO L387 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 63 treesize of output 54 [2021-12-27 23:55:31,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,370 INFO L387 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 35 treesize of output 35 [2021-12-27 23:55:31,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,375 INFO L387 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 54 treesize of output 46 [2021-12-27 23:55:31,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2021-12-27 23:55:31,386 INFO L387 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 17 treesize of output 27 [2021-12-27 23:55:31,400 INFO L353 Elim1Store]: treesize reduction 8, result has 77.1 percent of original size [2021-12-27 23:55:31,400 INFO L387 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 28 treesize of output 36 [2021-12-27 23:55:31,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,406 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-27 23:55:31,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 33 [2021-12-27 23:55:31,646 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-27 23:55:31,647 INFO L387 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 186 treesize of output 163 [2021-12-27 23:55:31,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 38 [2021-12-27 23:55:31,661 INFO L387 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 82 treesize of output 75 [2021-12-27 23:55:31,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:31,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 23:55:31,871 INFO L353 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2021-12-27 23:55:31,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 125 treesize of output 69 [2021-12-27 23:55:31,880 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-12-27 23:55:31,880 INFO L387 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 6 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 41 [2021-12-27 23:55:31,888 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-27 23:55:31,888 INFO L387 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 [2021-12-27 23:55:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:31,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 23:55:31,987 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1030 Int) (v_ArrVal_1029 (Array Int Int)) (v_ArrVal_1031 (Array Int Int))) (let ((.cse8 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse8))) (let ((.cse0 (select |c_#memory_int| .cse2)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse8))) (or (not (<= (+ (select .cse0 .cse1) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) v_ArrVal_1030)) (<= 101 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1031)) (.cse3 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1029)) (.cse7 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse7)) (.cse5 (+ (select (select .cse6 |c_ULTIMATE.start_main_~list~0#1.base|) .cse7) 4))) (select (select (store |c_#memory_int| .cse2 (store .cse0 .cse1 v_ArrVal_1030)) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5)))))))))) is different from false [2021-12-27 23:55:32,011 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1030 Int) (v_ArrVal_1029 (Array Int Int)) (v_ArrVal_1031 (Array Int Int))) (let ((.cse8 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (let ((.cse1 (select |c_#memory_int| .cse0)) (.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (or (<= 101 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1031)) (.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1029)) (.cse7 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~head~0#1.base|) .cse7)) (.cse5 (+ (select (select .cse6 |c_ULTIMATE.start_main_~head~0#1.base|) .cse7) 4))) (select (select (store |c_#memory_int| .cse0 (store .cse1 .cse2 v_ArrVal_1030)) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5))))) (not (<= (+ (select .cse1 .cse2) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) v_ArrVal_1030))))))) is different from false [2021-12-27 23:55:32,058 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:55:32,058 INFO L387 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 588 treesize of output 528 [2021-12-27 23:55:32,076 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:55:32,076 INFO L387 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 516 treesize of output 498 [2021-12-27 23:55:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-27 23:55:32,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250999070] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 23:55:32,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 23:55:32,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 24 [2021-12-27 23:55:32,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924405359] [2021-12-27 23:55:32,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 23:55:32,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-27 23:55:32,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:55:32,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-27 23:55:32,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=404, Unknown=2, NotChecked=82, Total=552 [2021-12-27 23:55:32,782 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:55:33,807 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2021-12-27 23:55:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-27 23:55:33,819 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-27 23:55:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:55:33,819 INFO L225 Difference]: With dead ends: 56 [2021-12-27 23:55:33,819 INFO L226 Difference]: Without dead ends: 49 [2021-12-27 23:55:33,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=211, Invalid=985, Unknown=2, NotChecked=134, Total=1332 [2021-12-27 23:55:33,820 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-27 23:55:33,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 113 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 167 Invalid, 0 Unknown, 73 Unchecked, 0.2s Time] [2021-12-27 23:55:33,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-27 23:55:33,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-12-27 23:55:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 48 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2021-12-27 23:55:33,825 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 19 [2021-12-27 23:55:33,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:55:33,826 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2021-12-27 23:55:33,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2021-12-27 23:55:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-27 23:55:33,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:55:33,827 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:55:33,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-27 23:55:34,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:34,032 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:55:34,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:55:34,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2096375286, now seen corresponding path program 1 times [2021-12-27 23:55:34,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:55:34,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344263432] [2021-12-27 23:55:34,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:34,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:55:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:34,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:55:34,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344263432] [2021-12-27 23:55:34,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344263432] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:55:34,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557488025] [2021-12-27 23:55:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:34,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:34,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:55:34,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 23:55:34,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-27 23:55:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:34,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-27 23:55:34,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:55:34,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,489 INFO L387 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 18 treesize of output 19 [2021-12-27 23:55:34,497 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-27 23:55:34,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-27 23:55:34,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2021-12-27 23:55:34,510 INFO L387 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 30 treesize of output 30 [2021-12-27 23:55:34,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-27 23:55:34,528 INFO L387 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 [2021-12-27 23:55:34,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,547 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 19 [2021-12-27 23:55:34,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2021-12-27 23:55:34,676 INFO L387 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-12-27 23:55:34,680 INFO L387 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-12-27 23:55:34,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,685 INFO L387 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 26 treesize of output 23 [2021-12-27 23:55:34,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,691 INFO L387 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 26 treesize of output 23 [2021-12-27 23:55:34,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,698 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-27 23:55:34,711 INFO L353 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-12-27 23:55:34,711 INFO L387 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 22 treesize of output 30 [2021-12-27 23:55:34,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:34,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-27 23:55:34,978 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-27 23:55:34,979 INFO L387 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 173 treesize of output 154 [2021-12-27 23:55:34,992 INFO L387 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 54 [2021-12-27 23:55:34,999 INFO L387 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 82 treesize of output 75 [2021-12-27 23:55:35,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 23:55:35,275 INFO L353 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2021-12-27 23:55:35,275 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 202 treesize of output 110 [2021-12-27 23:55:35,283 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-12-27 23:55:35,284 INFO L387 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 94 treesize of output 58 [2021-12-27 23:55:35,287 INFO L387 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 52 treesize of output 38 [2021-12-27 23:55:35,396 INFO L387 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2021-12-27 23:55:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:35,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 23:55:43,552 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1215 (Array Int Int)) (v_ArrVal_1214 (Array Int Int)) (v_ArrVal_1213 Int) (v_ArrVal_1216 Int)) (let ((.cse12 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse11 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse12))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| .cse11 v_ArrVal_1214)) (.cse13 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse2 (select (select .cse8 |c_ULTIMATE.start_main_~list~0#1.base|) .cse13)) (.cse10 (store |c_#memory_$Pointer$.base| .cse11 v_ArrVal_1215))) (let ((.cse1 (select (select .cse10 |c_ULTIMATE.start_main_~list~0#1.base|) .cse13)) (.cse9 (+ .cse2 4)) (.cse5 (select |c_#memory_int| .cse11)) (.cse6 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse12))) (let ((.cse0 (store |c_#memory_int| .cse11 (store .cse5 .cse6 v_ArrVal_1213))) (.cse7 (select (select .cse10 .cse1) .cse9))) (let ((.cse3 (select .cse0 .cse7)) (.cse4 (select (select .cse8 .cse1) .cse9))) (or (not (<= (+ (select (select .cse0 .cse1) .cse2) v_ArrVal_1216) (select .cse3 .cse4))) (not (<= v_ArrVal_1213 (+ (select .cse5 .cse6) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (<= (select (select (store .cse0 .cse7 (store .cse3 .cse4 v_ArrVal_1216)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109)))))))))) is different from false [2021-12-27 23:55:43,593 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1215 (Array Int Int)) (v_ArrVal_1214 (Array Int Int)) (v_ArrVal_1213 Int) (v_ArrVal_1216 Int)) (let ((.cse12 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (let ((.cse11 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) .cse12))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| .cse11 v_ArrVal_1214)) (.cse13 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (let ((.cse2 (select (select .cse8 |c_ULTIMATE.start_main_~head~0#1.base|) .cse13)) (.cse10 (store |c_#memory_$Pointer$.base| .cse11 v_ArrVal_1215))) (let ((.cse1 (select (select .cse10 |c_ULTIMATE.start_main_~head~0#1.base|) .cse13)) (.cse9 (+ .cse2 4)) (.cse6 (select |c_#memory_int| .cse11)) (.cse7 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|) .cse12))) (let ((.cse0 (store |c_#memory_int| .cse11 (store .cse6 .cse7 v_ArrVal_1213))) (.cse5 (select (select .cse10 .cse1) .cse9))) (let ((.cse3 (select .cse0 .cse5)) (.cse4 (select (select .cse8 .cse1) .cse9))) (or (not (<= (+ v_ArrVal_1216 (select (select .cse0 .cse1) .cse2)) (select .cse3 .cse4))) (<= (select (select (store .cse0 .cse5 (store .cse3 .cse4 v_ArrVal_1216)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109) (not (<= v_ArrVal_1213 (+ (select .cse6 .cse7) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))))))))) is different from false [2021-12-27 23:55:43,681 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:55:43,681 INFO L387 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 2139 treesize of output 1731 [2021-12-27 23:55:43,700 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:55:43,701 INFO L387 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 1719 treesize of output 1575 [2021-12-27 23:55:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-27 23:55:45,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557488025] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 23:55:45,694 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 23:55:45,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 23 [2021-12-27 23:55:45,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886448294] [2021-12-27 23:55:45,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 23:55:45,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-27 23:55:45,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:55:45,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-27 23:55:45,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=327, Unknown=6, NotChecked=78, Total=506 [2021-12-27 23:55:45,695 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:54,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:55:54,227 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2021-12-27 23:55:54,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-27 23:55:54,228 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-27 23:55:54,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:55:54,229 INFO L225 Difference]: With dead ends: 85 [2021-12-27 23:55:54,229 INFO L226 Difference]: Without dead ends: 83 [2021-12-27 23:55:54,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=229, Invalid=764, Unknown=7, NotChecked=122, Total=1122 [2021-12-27 23:55:54,230 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 49 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 23:55:54,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 123 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 112 Invalid, 0 Unknown, 146 Unchecked, 0.1s Time] [2021-12-27 23:55:54,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-27 23:55:54,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 66. [2021-12-27 23:55:54,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.323076923076923) internal successors, (86), 65 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2021-12-27 23:55:54,236 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 19 [2021-12-27 23:55:54,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:55:54,236 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-12-27 23:55:54,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:55:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2021-12-27 23:55:54,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-27 23:55:54,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:55:54,237 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:55:54,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-27 23:55:54,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:54,451 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:55:54,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:55:54,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2096373364, now seen corresponding path program 1 times [2021-12-27 23:55:54,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:55:54,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409948148] [2021-12-27 23:55:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:54,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:55:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:54,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:55:54,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409948148] [2021-12-27 23:55:54,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409948148] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 23:55:54,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056041297] [2021-12-27 23:55:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:55:54,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 23:55:54,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:55:54,753 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 23:55:54,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-27 23:55:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:55:54,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-27 23:55:54,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:55:54,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:54,883 INFO L387 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 18 treesize of output 19 [2021-12-27 23:55:54,893 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-27 23:55:54,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-27 23:55:54,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 20 treesize of output 28 [2021-12-27 23:55:54,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:54,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:54,987 INFO L387 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 0 case distinctions, treesize of input 24 treesize of output 28 [2021-12-27 23:55:54,992 INFO L387 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-12-27 23:55:54,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:54,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:54,998 INFO L387 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 26 treesize of output 23 [2021-12-27 23:55:55,004 INFO L387 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 11 treesize of output 15 [2021-12-27 23:55:55,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:55,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2021-12-27 23:55:55,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:55,017 INFO L387 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 27 treesize of output 26 [2021-12-27 23:55:55,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:55,021 INFO L387 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 20 treesize of output 22 [2021-12-27 23:55:55,035 INFO L353 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-12-27 23:55:55,035 INFO L387 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 22 treesize of output 30 [2021-12-27 23:55:55,231 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-27 23:55:55,231 INFO L387 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 105 [2021-12-27 23:55:55,235 INFO L387 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 26 treesize of output 28 [2021-12-27 23:55:55,238 INFO L387 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 35 treesize of output 40 [2021-12-27 23:55:55,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 23:55:55,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 23:55:55,457 INFO L353 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2021-12-27 23:55:55,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 205 treesize of output 103 [2021-12-27 23:55:55,464 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-27 23:55:55,464 INFO L387 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 1 case distinctions, treesize of input 80 treesize of output 46 [2021-12-27 23:55:55,467 INFO L387 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 39 treesize of output 26 [2021-12-27 23:55:55,501 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-27 23:55:55,501 INFO L387 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 [2021-12-27 23:55:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:55:55,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 23:55:59,707 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1387 Int) (v_ArrVal_1386 (Array Int Int)) (v_ArrVal_1385 (Array Int Int)) (v_ArrVal_1384 (Array Int Int))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_1384)) (.cse11 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse3 (select (select .cse7 |c_ULTIMATE.start_main_~list~0#1.base|) .cse11)) (.cse9 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_1385))) (let ((.cse2 (select (select .cse9 |c_ULTIMATE.start_main_~list~0#1.base|) .cse11)) (.cse8 (+ .cse3 4))) (let ((.cse1 (store |c_#memory_int| .cse10 v_ArrVal_1386)) (.cse4 (select (select .cse9 .cse2) .cse8))) (let ((.cse5 (select .cse1 .cse4)) (.cse6 (select (select .cse7 .cse2) .cse8))) (let ((.cse0 (select .cse5 .cse6))) (or (not (<= .cse0 (+ v_ArrVal_1387 (select (select .cse1 .cse2) .cse3)))) (<= .cse0 100) (<= 91 (select (select (store .cse1 .cse4 (store .cse5 .cse6 v_ArrVal_1387)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))))))))) is different from false [2021-12-27 23:55:59,742 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1387 Int) (v_ArrVal_1386 (Array Int Int)) (v_ArrVal_1385 (Array Int Int)) (v_ArrVal_1384 (Array Int Int))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_1384)) (.cse11 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~head~0#1.base|) .cse11)) (.cse9 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_1385))) (let ((.cse5 (select (select .cse9 |c_ULTIMATE.start_main_~head~0#1.base|) .cse11)) (.cse8 (+ 4 .cse6))) (let ((.cse0 (store |c_#memory_int| .cse10 v_ArrVal_1386)) (.cse1 (select (select .cse9 .cse5) .cse8))) (let ((.cse2 (select .cse0 .cse1)) (.cse3 (select (select .cse7 .cse5) .cse8))) (let ((.cse4 (select .cse2 .cse3))) (or (<= 91 (select (select (store .cse0 .cse1 (store .cse2 .cse3 v_ArrVal_1387)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (not (<= .cse4 (+ (select (select .cse0 .cse5) .cse6) v_ArrVal_1387))) (<= .cse4 100)))))))))) is different from false [2021-12-27 23:55:59,803 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:55:59,803 INFO L387 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 1896 treesize of output 1428 [2021-12-27 23:55:59,828 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:55:59,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1416 treesize of output 1370 [2021-12-27 23:55:59,887 INFO L353 Elim1Store]: treesize reduction 16, result has 66.7 percent of original size [2021-12-27 23:55:59,887 INFO L387 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 4 case distinctions, treesize of input 2631 treesize of output 2398 [2021-12-27 23:55:59,901 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:55:59,902 INFO L387 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1602 treesize of output 1555 [2021-12-27 23:56:00,837 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:56:00,838 INFO L387 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 48920 treesize of output 47149 [2021-12-27 23:56:01,439 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:56:01,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 942046 treesize of output 841046 [2021-12-27 23:56:02,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:56:02,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 839191 treesize of output 808273 [2021-12-27 23:56:04,634 INFO L244 Elim1Store]: Index analysis took 210 ms [2021-12-27 23:56:15,318 WARN L228 SmtUtils]: Spent 10.67s on a formula simplification that was a NOOP. DAG size: 740 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-27 23:56:15,318 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:56:15,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 812129 treesize of output 803807 [2021-12-27 23:56:18,768 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-27 23:56:18,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 634872 treesize of output 625846 [2021-12-27 23:56:25,395 INFO L244 Elim1Store]: Index analysis took 2345 ms