./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/getNumbers2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e872a0dffbf376eb2d8b1e3516401a8dafe115a6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 07:51:39,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 07:51:39,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 07:51:39,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 07:51:39,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 07:51:39,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 07:51:39,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 07:51:39,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 07:51:39,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 07:51:39,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 07:51:39,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 07:51:39,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 07:51:39,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 07:51:39,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 07:51:39,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 07:51:39,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 07:51:39,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 07:51:39,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 07:51:39,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 07:51:39,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 07:51:39,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 07:51:39,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 07:51:39,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 07:51:39,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 07:51:39,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 07:51:39,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 07:51:39,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 07:51:39,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 07:51:39,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 07:51:39,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 07:51:39,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 07:51:39,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 07:51:39,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 07:51:39,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 07:51:39,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 07:51:39,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 07:51:39,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 07:51:39,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 07:51:39,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 07:51:39,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 07:51:39,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 07:51:39,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 07:51:39,644 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 07:51:39,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 07:51:39,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 07:51:39,646 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 07:51:39,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 07:51:39,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 07:51:39,648 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 07:51:39,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 07:51:39,649 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 07:51:39,649 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 07:51:39,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 07:51:39,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 07:51:39,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 07:51:39,650 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 07:51:39,651 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 07:51:39,651 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 07:51:39,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 07:51:39,651 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 07:51:39,651 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 07:51:39,651 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 07:51:39,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 07:51:39,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 07:51:39,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 07:51:39,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:51:39,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 07:51:39,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 07:51:39,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 07:51:39,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 07:51:39,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 07:51:39,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e872a0dffbf376eb2d8b1e3516401a8dafe115a6 [2021-08-27 07:51:39,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 07:51:39,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 07:51:39,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 07:51:39,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 07:51:39,994 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 07:51:39,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers2.c [2021-08-27 07:51:40,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473a1cc3b/31ff6cf572164504a247c4a8a2598388/FLAG995960f6d [2021-08-27 07:51:40,499 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 07:51:40,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers2.c [2021-08-27 07:51:40,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473a1cc3b/31ff6cf572164504a247c4a8a2598388/FLAG995960f6d [2021-08-27 07:51:40,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473a1cc3b/31ff6cf572164504a247c4a8a2598388 [2021-08-27 07:51:40,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 07:51:40,528 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 07:51:40,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 07:51:40,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 07:51:40,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 07:51:40,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:51:40" (1/1) ... [2021-08-27 07:51:40,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e24da11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:40, skipping insertion in model container [2021-08-27 07:51:40,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:51:40" (1/1) ... [2021-08-27 07:51:40,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 07:51:40,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 07:51:40,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:51:40,688 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 07:51:40,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 07:51:40,716 INFO L208 MainTranslator]: Completed translation [2021-08-27 07:51:40,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:40 WrapperNode [2021-08-27 07:51:40,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 07:51:40,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 07:51:40,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 07:51:40,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 07:51:40,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:40" (1/1) ... [2021-08-27 07:51:40,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:40" (1/1) ... [2021-08-27 07:51:40,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:40" (1/1) ... [2021-08-27 07:51:40,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:40" (1/1) ... [2021-08-27 07:51:40,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:40" (1/1) ... [2021-08-27 07:51:40,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:40" (1/1) ... [2021-08-27 07:51:40,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:40" (1/1) ... [2021-08-27 07:51:40,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 07:51:40,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 07:51:40,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 07:51:40,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 07:51:40,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:40" (1/1) ... [2021-08-27 07:51:40,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 07:51:40,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:40,818 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) [2021-08-27 07:51:40,844 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 [2021-08-27 07:51:40,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 07:51:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 07:51:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2021-08-27 07:51:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2021-08-27 07:51:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 07:51:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2021-08-27 07:51:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 07:51:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2021-08-27 07:51:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 07:51:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 07:51:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 07:51:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 07:51:40,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 07:51:40,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 07:51:41,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 07:51:41,184 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-08-27 07:51:41,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:41 BoogieIcfgContainer [2021-08-27 07:51:41,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 07:51:41,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 07:51:41,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 07:51:41,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 07:51:41,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:51:40" (1/3) ... [2021-08-27 07:51:41,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e75bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:51:41, skipping insertion in model container [2021-08-27 07:51:41,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:51:40" (2/3) ... [2021-08-27 07:51:41,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e75bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:51:41, skipping insertion in model container [2021-08-27 07:51:41,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:41" (3/3) ... [2021-08-27 07:51:41,192 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers2.c [2021-08-27 07:51:41,196 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 07:51:41,196 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-08-27 07:51:41,230 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 07:51:41,236 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-08-27 07:51:41,236 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-08-27 07:51:41,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.619047619047619) internal successors, (34), 30 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-27 07:51:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 07:51:41,256 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:41,256 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:41,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:41,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:41,272 INFO L82 PathProgramCache]: Analyzing trace with hash -262167437, now seen corresponding path program 1 times [2021-08-27 07:51:41,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:41,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293464913] [2021-08-27 07:51:41,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:41,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:41,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:41,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:41,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293464913] [2021-08-27 07:51:41,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293464913] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:41,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:41,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 07:51:41,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170074761] [2021-08-27 07:51:41,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 07:51:41,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:41,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 07:51:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:51:41,702 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.619047619047619) internal successors, (34), 30 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:41,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:41,952 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2021-08-27 07:51:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:51:41,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-27 07:51:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:41,960 INFO L225 Difference]: With dead ends: 43 [2021-08-27 07:51:41,960 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 07:51:41,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:51:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 07:51:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2021-08-27 07:51:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.5) internal successors, (33), 30 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-08-27 07:51:41,989 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 10 [2021-08-27 07:51:41,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:41,990 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-08-27 07:51:41,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-08-27 07:51:41,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 07:51:41,991 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:41,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:41,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 07:51:41,992 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting getNumbersErr0REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:41,992 INFO L82 PathProgramCache]: Analyzing trace with hash -262167438, now seen corresponding path program 1 times [2021-08-27 07:51:41,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:41,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315528098] [2021-08-27 07:51:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:41,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:42,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:42,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:42,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315528098] [2021-08-27 07:51:42,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315528098] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:42,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:42,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 07:51:42,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556360708] [2021-08-27 07:51:42,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 07:51:42,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 07:51:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 07:51:42,116 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:42,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:42,254 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-08-27 07:51:42,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 07:51:42,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-08-27 07:51:42,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:42,256 INFO L225 Difference]: With dead ends: 37 [2021-08-27 07:51:42,256 INFO L226 Difference]: Without dead ends: 37 [2021-08-27 07:51:42,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:51:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-27 07:51:42,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-27 07:51:42,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 29 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-08-27 07:51:42,262 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 10 [2021-08-27 07:51:42,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:42,262 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-08-27 07:51:42,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:42,262 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-08-27 07:51:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-27 07:51:42,267 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:42,267 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:42,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 07:51:42,268 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:42,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1979581628, now seen corresponding path program 1 times [2021-08-27 07:51:42,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:42,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786163774] [2021-08-27 07:51:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:42,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:42,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:42,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:42,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786163774] [2021-08-27 07:51:42,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786163774] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:42,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890343697] [2021-08-27 07:51:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:42,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:42,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:42,480 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) [2021-08-27 07:51:42,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 07:51:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:42,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 07:51:42,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:42,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:51:42,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:42,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890343697] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:42,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:42,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-08-27 07:51:42,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132036285] [2021-08-27 07:51:42,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:51:42,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:51:42,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 07:51:42,848 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:43,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:43,079 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2021-08-27 07:51:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:51:43,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-08-27 07:51:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:43,082 INFO L225 Difference]: With dead ends: 41 [2021-08-27 07:51:43,083 INFO L226 Difference]: Without dead ends: 41 [2021-08-27 07:51:43,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 151.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:51:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-27 07:51:43,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-08-27 07:51:43,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.36) internal successors, (34), 32 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-08-27 07:51:43,095 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2021-08-27 07:51:43,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:43,095 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-08-27 07:51:43,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:43,095 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-08-27 07:51:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 07:51:43,096 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:43,096 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:43,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:43,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:43,321 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting getNumbersErr1REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:43,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:43,321 INFO L82 PathProgramCache]: Analyzing trace with hash 479651539, now seen corresponding path program 2 times [2021-08-27 07:51:43,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:43,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052738082] [2021-08-27 07:51:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:43,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:43,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:43,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:43,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052738082] [2021-08-27 07:51:43,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052738082] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:43,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77924711] [2021-08-27 07:51:43,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:51:43,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:43,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:43,569 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) [2021-08-27 07:51:43,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 07:51:43,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 07:51:43,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:43,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 07:51:43,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:43,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:51:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:43,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77924711] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:43,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:51:43,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2021-08-27 07:51:43,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580039591] [2021-08-27 07:51:43,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:51:43,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:43,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:51:43,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:51:43,988 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:44,063 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-08-27 07:51:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:51:44,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-27 07:51:44,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:44,066 INFO L225 Difference]: With dead ends: 40 [2021-08-27 07:51:44,066 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 07:51:44,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:51:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 07:51:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2021-08-27 07:51:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 30 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-08-27 07:51:44,076 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 16 [2021-08-27 07:51:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:44,077 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-08-27 07:51:44,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 07:51:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-08-27 07:51:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-27 07:51:44,078 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:44,078 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:44,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:44,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-27 07:51:44,285 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting getNumbers2Err0REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:44,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:44,286 INFO L82 PathProgramCache]: Analyzing trace with hash -680983352, now seen corresponding path program 1 times [2021-08-27 07:51:44,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:44,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636549015] [2021-08-27 07:51:44,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:44,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:44,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:44,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636549015] [2021-08-27 07:51:44,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636549015] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:44,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044470074] [2021-08-27 07:51:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:44,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:44,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:44,405 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) [2021-08-27 07:51:44,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 07:51:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:44,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 07:51:44,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:44,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044470074] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:44,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:44,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2021-08-27 07:51:44,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766837654] [2021-08-27 07:51:44,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 07:51:44,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:44,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 07:51:44,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-27 07:51:44,570 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:44,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:44,661 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2021-08-27 07:51:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 07:51:44,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2021-08-27 07:51:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:44,663 INFO L225 Difference]: With dead ends: 43 [2021-08-27 07:51:44,663 INFO L226 Difference]: Without dead ends: 43 [2021-08-27 07:51:44,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:51:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-27 07:51:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-08-27 07:51:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 33 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:44,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-08-27 07:51:44,666 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 21 [2021-08-27 07:51:44,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:44,667 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-08-27 07:51:44,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-08-27 07:51:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 07:51:44,668 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:44,668 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:44,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:44,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:44,893 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting getNumbers2Err0REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:44,893 INFO L82 PathProgramCache]: Analyzing trace with hash 974975319, now seen corresponding path program 2 times [2021-08-27 07:51:44,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:44,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510874807] [2021-08-27 07:51:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:44,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:44,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:44,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:44,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:44,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510874807] [2021-08-27 07:51:44,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510874807] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:44,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598517345] [2021-08-27 07:51:44,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:51:44,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:44,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:44,975 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) [2021-08-27 07:51:44,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 07:51:45,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:51:45,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:45,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 07:51:45,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:45,105 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-27 07:51:45,106 INFO L388 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-27 07:51:45,464 INFO L354 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2021-08-27 07:51:45,465 INFO L388 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 3 case distinctions, treesize of input 21 treesize of output 38 [2021-08-27 07:51:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-27 07:51:45,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598517345] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:45,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:51:45,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2021-08-27 07:51:45,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783083479] [2021-08-27 07:51:45,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:51:45,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:45,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:51:45,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:51:45,601 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:51:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:45,714 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-08-27 07:51:45,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 07:51:45,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-08-27 07:51:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:45,716 INFO L225 Difference]: With dead ends: 40 [2021-08-27 07:51:45,716 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 07:51:45,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:51:45,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 07:51:45,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-08-27 07:51:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 32 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-08-27 07:51:45,719 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 24 [2021-08-27 07:51:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:45,720 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-08-27 07:51:45,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:51:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-08-27 07:51:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 07:51:45,721 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:45,721 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:45,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-27 07:51:45,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:45,922 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:45,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:45,922 INFO L82 PathProgramCache]: Analyzing trace with hash 974975320, now seen corresponding path program 1 times [2021-08-27 07:51:45,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:45,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32296613] [2021-08-27 07:51:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:45,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:45,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:46,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:46,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32296613] [2021-08-27 07:51:46,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32296613] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:46,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760938796] [2021-08-27 07:51:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:46,018 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:46,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:46,019 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) [2021-08-27 07:51:46,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-27 07:51:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:46,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 07:51:46,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:46,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760938796] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:46,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:46,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2021-08-27 07:51:46,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870910078] [2021-08-27 07:51:46,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 07:51:46,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:46,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 07:51:46,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-27 07:51:46,241 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:46,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:46,339 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-08-27 07:51:46,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:51:46,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-08-27 07:51:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:46,342 INFO L225 Difference]: With dead ends: 45 [2021-08-27 07:51:46,348 INFO L226 Difference]: Without dead ends: 45 [2021-08-27 07:51:46,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:51:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-08-27 07:51:46,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2021-08-27 07:51:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 35 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-08-27 07:51:46,357 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 24 [2021-08-27 07:51:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:46,359 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-08-27 07:51:46,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-08-27 07:51:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 07:51:46,361 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:46,361 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:46,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:46,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:46,577 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:46,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:46,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1645381225, now seen corresponding path program 2 times [2021-08-27 07:51:46,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:46,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51220843] [2021-08-27 07:51:46,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:46,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:46,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:46,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:46,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51220843] [2021-08-27 07:51:46,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51220843] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:46,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818264222] [2021-08-27 07:51:46,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:51:46,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:46,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:46,679 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) [2021-08-27 07:51:46,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-27 07:51:46,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:51:46,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:46,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-27 07:51:46,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:46,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:51:47,055 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 07:51:47,056 INFO L388 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 12 treesize of output 14 [2021-08-27 07:51:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-27 07:51:47,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818264222] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:47,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:51:47,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-08-27 07:51:47,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792285544] [2021-08-27 07:51:47,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 07:51:47,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:47,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 07:51:47,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:51:47,109 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:51:47,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:47,205 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2021-08-27 07:51:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 07:51:47,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-08-27 07:51:47,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:47,207 INFO L225 Difference]: With dead ends: 50 [2021-08-27 07:51:47,207 INFO L226 Difference]: Without dead ends: 50 [2021-08-27 07:51:47,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:51:47,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-27 07:51:47,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-08-27 07:51:47,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.21875) internal successors, (39), 37 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:47,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-08-27 07:51:47,210 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 27 [2021-08-27 07:51:47,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:47,211 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-08-27 07:51:47,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:51:47,211 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-08-27 07:51:47,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-27 07:51:47,212 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:47,212 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:47,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:47,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:47,429 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting getNumbers2Err2REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:47,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:47,429 INFO L82 PathProgramCache]: Analyzing trace with hash -532789623, now seen corresponding path program 1 times [2021-08-27 07:51:47,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:47,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348624812] [2021-08-27 07:51:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:47,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:47,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:47,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-27 07:51:47,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:47,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348624812] [2021-08-27 07:51:47,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348624812] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:47,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 07:51:47,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 07:51:47,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314060656] [2021-08-27 07:51:47,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 07:51:47,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:47,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 07:51:47,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:51:47,512 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:47,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:47,575 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-08-27 07:51:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 07:51:47,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-08-27 07:51:47,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:47,577 INFO L225 Difference]: With dead ends: 44 [2021-08-27 07:51:47,577 INFO L226 Difference]: Without dead ends: 44 [2021-08-27 07:51:47,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 07:51:47,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-27 07:51:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-08-27 07:51:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.1875) internal successors, (38), 36 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-08-27 07:51:47,580 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 28 [2021-08-27 07:51:47,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:47,580 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-08-27 07:51:47,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:47,581 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-08-27 07:51:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-27 07:51:47,581 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:47,584 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:47,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-27 07:51:47,585 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:47,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:47,585 INFO L82 PathProgramCache]: Analyzing trace with hash -532789622, now seen corresponding path program 1 times [2021-08-27 07:51:47,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:47,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387010231] [2021-08-27 07:51:47,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:47,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:47,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:47,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:47,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:47,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387010231] [2021-08-27 07:51:47,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387010231] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:47,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944134443] [2021-08-27 07:51:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:47,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:47,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:47,707 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) [2021-08-27 07:51:47,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-27 07:51:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:47,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 07:51:47,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:47,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944134443] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:47,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:47,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-08-27 07:51:47,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250591480] [2021-08-27 07:51:47,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:51:47,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:51:47,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-27 07:51:47,951 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:48,041 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2021-08-27 07:51:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:51:48,042 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-08-27 07:51:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:48,043 INFO L225 Difference]: With dead ends: 49 [2021-08-27 07:51:48,043 INFO L226 Difference]: Without dead ends: 49 [2021-08-27 07:51:48,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 62.9ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:51:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-27 07:51:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2021-08-27 07:51:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-08-27 07:51:48,055 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 28 [2021-08-27 07:51:48,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:48,056 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-08-27 07:51:48,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-08-27 07:51:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-27 07:51:48,060 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:48,060 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:48,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:48,288 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 [2021-08-27 07:51:48,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:48,288 INFO L82 PathProgramCache]: Analyzing trace with hash 978381595, now seen corresponding path program 2 times [2021-08-27 07:51:48,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:48,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814015827] [2021-08-27 07:51:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:48,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:48,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:48,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:48,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:48,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814015827] [2021-08-27 07:51:48,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814015827] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:48,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753223749] [2021-08-27 07:51:48,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:51:48,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:48,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:48,413 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) [2021-08-27 07:51:48,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-27 07:51:48,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:51:48,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:48,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 07:51:48,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:48,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:51:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-27 07:51:48,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753223749] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:51:48,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:51:48,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [10] total 11 [2021-08-27 07:51:48,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527157301] [2021-08-27 07:51:48,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 07:51:48,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:48,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 07:51:48,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:51:48,724 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:48,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:48,744 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2021-08-27 07:51:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 07:51:48,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2021-08-27 07:51:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:48,745 INFO L225 Difference]: With dead ends: 50 [2021-08-27 07:51:48,745 INFO L226 Difference]: Without dead ends: 50 [2021-08-27 07:51:48,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:51:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-27 07:51:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-08-27 07:51:48,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 40 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-08-27 07:51:48,749 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 31 [2021-08-27 07:51:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:48,749 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-08-27 07:51:48,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:48,750 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-08-27 07:51:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-27 07:51:48,750 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:48,750 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:48,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:48,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-27 07:51:48,957 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:48,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:48,958 INFO L82 PathProgramCache]: Analyzing trace with hash -2092158530, now seen corresponding path program 1 times [2021-08-27 07:51:48,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:48,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667537507] [2021-08-27 07:51:48,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:48,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:49,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:51:49,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:49,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667537507] [2021-08-27 07:51:49,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667537507] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:49,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564099046] [2021-08-27 07:51:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:49,056 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:49,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:49,057 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:51:49,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 07:51:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:49,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 07:51:49,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:51:49,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564099046] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:49,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:49,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-08-27 07:51:49,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029614507] [2021-08-27 07:51:49,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 07:51:49,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:49,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 07:51:49,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-27 07:51:49,375 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:49,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:49,457 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2021-08-27 07:51:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:51:49,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2021-08-27 07:51:49,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:49,458 INFO L225 Difference]: With dead ends: 53 [2021-08-27 07:51:49,458 INFO L226 Difference]: Without dead ends: 53 [2021-08-27 07:51:49,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:51:49,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-08-27 07:51:49,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-08-27 07:51:49,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 43 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-08-27 07:51:49,461 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 35 [2021-08-27 07:51:49,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:49,462 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-08-27 07:51:49,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:49,462 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-08-27 07:51:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-27 07:51:49,463 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:49,463 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:49,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-08-27 07:51:49,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:49,677 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:49,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:49,677 INFO L82 PathProgramCache]: Analyzing trace with hash 675510285, now seen corresponding path program 2 times [2021-08-27 07:51:49,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:49,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668804183] [2021-08-27 07:51:49,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:49,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:49,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:51:49,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:49,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668804183] [2021-08-27 07:51:49,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668804183] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:49,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770735508] [2021-08-27 07:51:49,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:51:49,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:49,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:49,790 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:51:49,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-27 07:51:49,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 07:51:49,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:49,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 07:51:49,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:51:50,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770735508] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:50,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:50,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-08-27 07:51:50,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023072647] [2021-08-27 07:51:50,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 07:51:50,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 07:51:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:51:50,123 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:50,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:50,203 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2021-08-27 07:51:50,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:51:50,204 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2021-08-27 07:51:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:50,205 INFO L225 Difference]: With dead ends: 56 [2021-08-27 07:51:50,205 INFO L226 Difference]: Without dead ends: 56 [2021-08-27 07:51:50,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 72.5ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:51:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-27 07:51:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2021-08-27 07:51:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 46 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2021-08-27 07:51:50,208 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 38 [2021-08-27 07:51:50,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:50,208 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2021-08-27 07:51:50,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2021-08-27 07:51:50,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-27 07:51:50,209 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:50,210 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:50,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:50,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-27 07:51:50,433 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:50,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1809996638, now seen corresponding path program 3 times [2021-08-27 07:51:50,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:50,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031256237] [2021-08-27 07:51:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:50,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 07:51:50,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:50,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031256237] [2021-08-27 07:51:50,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031256237] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:50,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176286159] [2021-08-27 07:51:50,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 07:51:50,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:50,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:50,565 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:51:50,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-27 07:51:50,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-27 07:51:50,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:50,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-27 07:51:50,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:50,823 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-27 07:51:50,823 INFO L388 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-27 07:51:50,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:51:51,571 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 07:51:51,571 INFO L388 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 31 treesize of output 33 [2021-08-27 07:51:51,589 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-08-27 07:51:51,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-08-27 07:51:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-08-27 07:51:51,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176286159] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:51,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:51,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 17 [2021-08-27 07:51:51,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754209358] [2021-08-27 07:51:51,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 07:51:51,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:51,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 07:51:51,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-08-27 07:51:51,821 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:51:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:52,303 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-08-27 07:51:52,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 07:51:52,303 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2021-08-27 07:51:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:52,304 INFO L225 Difference]: With dead ends: 67 [2021-08-27 07:51:52,304 INFO L226 Difference]: Without dead ends: 67 [2021-08-27 07:51:52,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 481.6ms TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2021-08-27 07:51:52,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-27 07:51:52,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2021-08-27 07:51:52,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 53 states have internal predecessors, (55), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-08-27 07:51:52,308 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 41 [2021-08-27 07:51:52,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:52,309 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-08-27 07:51:52,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:51:52,309 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-08-27 07:51:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-27 07:51:52,310 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:52,310 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:52,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:52,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-27 07:51:52,519 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:52,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:52,519 INFO L82 PathProgramCache]: Analyzing trace with hash -665591034, now seen corresponding path program 1 times [2021-08-27 07:51:52,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:52,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830171353] [2021-08-27 07:51:52,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:52,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:52,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:52,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 07:51:52,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:52,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830171353] [2021-08-27 07:51:52,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830171353] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:52,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605031903] [2021-08-27 07:51:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:52,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:52,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:52,664 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:51:52,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-27 07:51:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:52,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 07:51:52,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 07:51:53,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605031903] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:53,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:53,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-08-27 07:51:53,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671840491] [2021-08-27 07:51:53,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 07:51:53,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:53,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 07:51:53,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:51:53,074 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 11 states have internal predecessors, (39), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:53,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:53,152 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2021-08-27 07:51:53,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 07:51:53,153 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 11 states have internal predecessors, (39), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2021-08-27 07:51:53,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:53,153 INFO L225 Difference]: With dead ends: 66 [2021-08-27 07:51:53,153 INFO L226 Difference]: Without dead ends: 66 [2021-08-27 07:51:53,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 84.5ms TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:51:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-27 07:51:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-08-27 07:51:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 56 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2021-08-27 07:51:53,162 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 45 [2021-08-27 07:51:53,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:53,162 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2021-08-27 07:51:53,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 11 states have internal predecessors, (39), 1 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 07:51:53,162 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2021-08-27 07:51:53,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-27 07:51:53,163 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:53,163 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:53,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:53,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-27 07:51:53,364 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting getNumbers2Err3REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:53,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:53,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1878971029, now seen corresponding path program 2 times [2021-08-27 07:51:53,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:53,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658762439] [2021-08-27 07:51:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:53,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:53,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 07:51:53,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:53,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658762439] [2021-08-27 07:51:53,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658762439] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:53,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755123774] [2021-08-27 07:51:53,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:51:53,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:53,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:53,509 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:51:53,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-27 07:51:53,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 07:51:53,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:53,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 07:51:53,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:54,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:51:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-08-27 07:51:54,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755123774] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:54,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:54,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 20 [2021-08-27 07:51:54,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704225150] [2021-08-27 07:51:54,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-27 07:51:54,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-27 07:51:54,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-08-27 07:51:54,185 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 17 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:51:54,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:54,597 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2021-08-27 07:51:54,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 07:51:54,597 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 17 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2021-08-27 07:51:54,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:54,598 INFO L225 Difference]: With dead ends: 66 [2021-08-27 07:51:54,598 INFO L226 Difference]: Without dead ends: 66 [2021-08-27 07:51:54,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 419.7ms TimeCoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2021-08-27 07:51:54,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-27 07:51:54,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-08-27 07:51:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 58 states have internal predecessors, (60), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-08-27 07:51:54,602 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 48 [2021-08-27 07:51:54,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:54,602 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-08-27 07:51:54,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 17 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:51:54,603 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-08-27 07:51:54,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-27 07:51:54,603 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:54,604 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:54,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:54,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-27 07:51:54,821 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:54,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:54,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1831341513, now seen corresponding path program 4 times [2021-08-27 07:51:54,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:54,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385029502] [2021-08-27 07:51:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:54,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:54,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:54,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-08-27 07:51:55,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:55,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385029502] [2021-08-27 07:51:55,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385029502] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:55,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215164939] [2021-08-27 07:51:55,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 07:51:55,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:55,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:55,077 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:51:55,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-27 07:51:55,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 07:51:55,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:55,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-27 07:51:55,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:55,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:51:56,091 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 07:51:56,091 INFO L388 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 25 treesize of output 25 [2021-08-27 07:51:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 126 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 07:51:56,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215164939] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:56,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:56,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19] total 25 [2021-08-27 07:51:56,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730968446] [2021-08-27 07:51:56,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-27 07:51:56,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-27 07:51:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2021-08-27 07:51:56,309 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 26 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 3 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 07:51:57,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:57,158 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2021-08-27 07:51:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-27 07:51:57,158 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 3 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2021-08-27 07:51:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:57,159 INFO L225 Difference]: With dead ends: 74 [2021-08-27 07:51:57,159 INFO L226 Difference]: Without dead ends: 74 [2021-08-27 07:51:57,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 885.9ms TimeCoverageRelationStatistics Valid=373, Invalid=1519, Unknown=0, NotChecked=0, Total=1892 [2021-08-27 07:51:57,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-27 07:51:57,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2021-08-27 07:51:57,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 63 states have internal predecessors, (65), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-08-27 07:51:57,162 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 55 [2021-08-27 07:51:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:57,163 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-08-27 07:51:57,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.52) internal successors, (63), 22 states have internal predecessors, (63), 3 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 07:51:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-08-27 07:51:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-27 07:51:57,164 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:57,164 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:57,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:57,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:57,369 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:57,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:57,369 INFO L82 PathProgramCache]: Analyzing trace with hash 256397901, now seen corresponding path program 5 times [2021-08-27 07:51:57,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:57,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363758994] [2021-08-27 07:51:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:57,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:51:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:51:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:51:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:51:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 19 proven. 21 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-08-27 07:51:57,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:51:57,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363758994] [2021-08-27 07:51:57,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363758994] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:57,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121597687] [2021-08-27 07:51:57,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 07:51:57,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:51:57,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:51:57,649 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:51:57,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-27 07:51:58,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-08-27 07:51:58,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:51:58,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-27 07:51:58,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:51:58,084 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-27 07:51:58,085 INFO L388 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 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-27 07:51:58,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:51:58,957 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 07:51:58,957 INFO L388 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 31 treesize of output 33 [2021-08-27 07:51:58,978 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-08-27 07:51:58,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-08-27 07:51:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:51:59,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121597687] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:51:59,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:51:59,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2021-08-27 07:51:59,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743077115] [2021-08-27 07:51:59,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-27 07:51:59,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:51:59,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-27 07:51:59,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-08-27 07:51:59,429 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 3 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 07:51:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:51:59,760 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2021-08-27 07:51:59,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 07:51:59,760 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 3 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 60 [2021-08-27 07:51:59,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:51:59,761 INFO L225 Difference]: With dead ends: 79 [2021-08-27 07:51:59,761 INFO L226 Difference]: Without dead ends: 79 [2021-08-27 07:51:59,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 406.2ms TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-08-27 07:51:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-08-27 07:51:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2021-08-27 07:51:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 68 states have internal predecessors, (70), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:51:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-08-27 07:51:59,765 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 60 [2021-08-27 07:51:59,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:51:59,766 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-08-27 07:51:59,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 3 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 07:51:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-08-27 07:51:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-27 07:51:59,767 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:51:59,767 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:51:59,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-27 07:51:59,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-27 07:51:59,993 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting getNumbers2Err1REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:51:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:51:59,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1410187191, now seen corresponding path program 6 times [2021-08-27 07:51:59,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:51:59,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561944204] [2021-08-27 07:51:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:51:59,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:00,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:00,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-27 07:52:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 19 proven. 38 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-08-27 07:52:00,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:00,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561944204] [2021-08-27 07:52:00,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561944204] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:00,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545650811] [2021-08-27 07:52:00,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 07:52:00,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:00,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:00,241 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:52:00,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-27 07:52:00,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-08-27 07:52:00,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:00,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 07:52:00,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:00,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-27 07:52:01,077 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 07:52:01,078 INFO L388 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 12 treesize of output 14 [2021-08-27 07:52:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-08-27 07:52:01,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545650811] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 07:52:01,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 07:52:01,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2021-08-27 07:52:01,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242415519] [2021-08-27 07:52:01,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 07:52:01,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:01,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 07:52:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-08-27 07:52:01,339 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:52:01,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:01,498 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2021-08-27 07:52:01,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:52:01,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2021-08-27 07:52:01,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:01,500 INFO L225 Difference]: With dead ends: 75 [2021-08-27 07:52:01,500 INFO L226 Difference]: Without dead ends: 75 [2021-08-27 07:52:01,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 320.5ms TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-08-27 07:52:01,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-08-27 07:52:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-08-27 07:52:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.0625) internal successors, (68), 66 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:52:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2021-08-27 07:52:01,503 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 65 [2021-08-27 07:52:01,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:01,504 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2021-08-27 07:52:01,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 07:52:01,504 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2021-08-27 07:52:01,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-08-27 07:52:01,504 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:01,505 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:01,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-08-27 07:52:01,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:01,718 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:52:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:01,718 INFO L82 PathProgramCache]: Analyzing trace with hash -368674019, now seen corresponding path program 1 times [2021-08-27 07:52:01,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:01,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390306892] [2021-08-27 07:52:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:01,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:01,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 07:52:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:01,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:01,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390306892] [2021-08-27 07:52:01,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390306892] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:01,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552869999] [2021-08-27 07:52:01,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:01,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:01,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:01,840 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:52:01,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-27 07:52:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:02,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 07:52:02,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:02,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552869999] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:02,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:02,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 11 [2021-08-27 07:52:02,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164126279] [2021-08-27 07:52:02,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 07:52:02,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:02,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 07:52:02,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:52:02,590 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:02,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:02,655 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2021-08-27 07:52:02,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 07:52:02,656 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2021-08-27 07:52:02,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:02,656 INFO L225 Difference]: With dead ends: 83 [2021-08-27 07:52:02,656 INFO L226 Difference]: Without dead ends: 83 [2021-08-27 07:52:02,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 55.2ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-08-27 07:52:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-08-27 07:52:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2021-08-27 07:52:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 71 states have internal predecessors, (73), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:52:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-08-27 07:52:02,659 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2021-08-27 07:52:02,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:02,659 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-08-27 07:52:02,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:02,660 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-08-27 07:52:02,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-08-27 07:52:02,660 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:02,661 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:02,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:02,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:02,887 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:52:02,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:02,888 INFO L82 PathProgramCache]: Analyzing trace with hash -243103583, now seen corresponding path program 2 times [2021-08-27 07:52:02,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:02,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049437192] [2021-08-27 07:52:02,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:02,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:02,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 07:52:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:03,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:03,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049437192] [2021-08-27 07:52:03,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049437192] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:03,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497799973] [2021-08-27 07:52:03,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 07:52:03,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:03,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:03,025 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:52:03,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-27 07:52:03,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 07:52:03,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:03,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 07:52:03,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:03,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497799973] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:03,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:03,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 12 [2021-08-27 07:52:03,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907525327] [2021-08-27 07:52:03,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 07:52:03,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:03,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 07:52:03,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:52:03,784 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:03,869 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2021-08-27 07:52:03,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 07:52:03,869 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2021-08-27 07:52:03,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:03,870 INFO L225 Difference]: With dead ends: 88 [2021-08-27 07:52:03,870 INFO L226 Difference]: Without dead ends: 88 [2021-08-27 07:52:03,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-08-27 07:52:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-08-27 07:52:03,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2021-08-27 07:52:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 74 states have (on average 1.054054054054054) internal successors, (78), 76 states have internal predecessors, (78), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:52:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2021-08-27 07:52:03,872 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 74 [2021-08-27 07:52:03,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:03,873 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2021-08-27 07:52:03,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2021-08-27 07:52:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-08-27 07:52:03,873 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:03,874 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:03,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:04,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:04,097 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:52:04,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:04,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1204178333, now seen corresponding path program 3 times [2021-08-27 07:52:04,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:04,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912522784] [2021-08-27 07:52:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:04,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 07:52:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:04,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:04,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912522784] [2021-08-27 07:52:04,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912522784] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:04,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284398134] [2021-08-27 07:52:04,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 07:52:04,245 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:04,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:04,248 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:52:04,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-27 07:52:04,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-08-27 07:52:04,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:04,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 07:52:04,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:05,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284398134] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:05,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:05,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 13 [2021-08-27 07:52:05,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504240107] [2021-08-27 07:52:05,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 07:52:05,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 07:52:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:52:05,122 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:05,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:05,193 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2021-08-27 07:52:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 07:52:05,202 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 79 [2021-08-27 07:52:05,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:05,202 INFO L225 Difference]: With dead ends: 93 [2021-08-27 07:52:05,203 INFO L226 Difference]: Without dead ends: 93 [2021-08-27 07:52:05,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 69.5ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-08-27 07:52:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-27 07:52:05,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2021-08-27 07:52:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 79 states have (on average 1.0506329113924051) internal successors, (83), 81 states have internal predecessors, (83), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:52:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-08-27 07:52:05,205 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 79 [2021-08-27 07:52:05,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:05,206 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-08-27 07:52:05,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:05,206 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-08-27 07:52:05,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-08-27 07:52:05,207 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:05,207 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:05,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:05,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:05,421 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:52:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:05,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2025699807, now seen corresponding path program 4 times [2021-08-27 07:52:05,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:05,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643757367] [2021-08-27 07:52:05,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:05,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:05,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:05,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 07:52:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:05,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:05,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:05,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643757367] [2021-08-27 07:52:05,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643757367] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:05,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727078705] [2021-08-27 07:52:05,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 07:52:05,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:05,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:05,592 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:52:05,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-27 07:52:06,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 07:52:06,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:06,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 07:52:06,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:06,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727078705] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:06,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:06,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 14 [2021-08-27 07:52:06,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711122493] [2021-08-27 07:52:06,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 07:52:06,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:06,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 07:52:06,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:52:06,614 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:06,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:06,669 INFO L93 Difference]: Finished difference Result 98 states and 99 transitions. [2021-08-27 07:52:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 07:52:06,670 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 84 [2021-08-27 07:52:06,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:06,670 INFO L225 Difference]: With dead ends: 98 [2021-08-27 07:52:06,670 INFO L226 Difference]: Without dead ends: 98 [2021-08-27 07:52:06,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 80.6ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-08-27 07:52:06,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-27 07:52:06,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-08-27 07:52:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 84 states have (on average 1.0476190476190477) internal successors, (88), 86 states have internal predecessors, (88), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:52:06,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2021-08-27 07:52:06,672 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 84 [2021-08-27 07:52:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:06,673 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2021-08-27 07:52:06,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 11 states have internal predecessors, (58), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2021-08-27 07:52:06,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-08-27 07:52:06,674 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:06,674 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:06,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:06,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-08-27 07:52:06,877 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:52:06,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:06,878 INFO L82 PathProgramCache]: Analyzing trace with hash -809435107, now seen corresponding path program 5 times [2021-08-27 07:52:06,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:06,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663860664] [2021-08-27 07:52:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:06,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:06,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:06,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 07:52:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:07,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:07,040 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:07,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:07,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663860664] [2021-08-27 07:52:07,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663860664] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:07,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177353346] [2021-08-27 07:52:07,041 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 07:52:07,041 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:07,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:07,045 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:52:07,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-27 07:52:08,349 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-08-27 07:52:08,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:08,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 07:52:08,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:08,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177353346] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:08,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:08,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 15 [2021-08-27 07:52:08,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272116925] [2021-08-27 07:52:08,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 07:52:08,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 07:52:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:52:08,565 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:08,670 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2021-08-27 07:52:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 07:52:08,670 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 89 [2021-08-27 07:52:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:08,671 INFO L225 Difference]: With dead ends: 103 [2021-08-27 07:52:08,671 INFO L226 Difference]: Without dead ends: 103 [2021-08-27 07:52:08,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 88.8ms TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-08-27 07:52:08,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-27 07:52:08,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2021-08-27 07:52:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 91 states have internal predecessors, (93), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:52:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2021-08-27 07:52:08,673 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 89 [2021-08-27 07:52:08,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:08,674 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2021-08-27 07:52:08,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 12 states have internal predecessors, (63), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2021-08-27 07:52:08,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-27 07:52:08,675 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:08,675 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:08,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:08,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-08-27 07:52:08,889 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:52:08,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:08,889 INFO L82 PathProgramCache]: Analyzing trace with hash -2070731871, now seen corresponding path program 6 times [2021-08-27 07:52:08,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:08,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887623961] [2021-08-27 07:52:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:08,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 07:52:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:09,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 07:52:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 07:52:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:09,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 07:52:09,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887623961] [2021-08-27 07:52:09,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887623961] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:09,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668804044] [2021-08-27 07:52:09,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 07:52:09,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:09,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 07:52:09,093 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 07:52:09,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-27 07:52:10,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-08-27 07:52:10,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 07:52:10,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 07:52:10,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 07:52:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 07:52:10,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668804044] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 07:52:10,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 07:52:10,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 16 [2021-08-27 07:52:10,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421478468] [2021-08-27 07:52:10,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-27 07:52:10,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 07:52:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-27 07:52:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-08-27 07:52:10,643 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 13 states have internal predecessors, (68), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:10,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 07:52:10,723 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2021-08-27 07:52:10,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 07:52:10,724 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 13 states have internal predecessors, (68), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 94 [2021-08-27 07:52:10,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 07:52:10,724 INFO L225 Difference]: With dead ends: 104 [2021-08-27 07:52:10,724 INFO L226 Difference]: Without dead ends: 104 [2021-08-27 07:52:10,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-08-27 07:52:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-08-27 07:52:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-08-27 07:52:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 94 states have (on average 1.0425531914893618) internal successors, (98), 96 states have internal predecessors, (98), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 07:52:10,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2021-08-27 07:52:10,727 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 94 [2021-08-27 07:52:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 07:52:10,727 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2021-08-27 07:52:10,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 13 states have internal predecessors, (68), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 07:52:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2021-08-27 07:52:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-08-27 07:52:10,729 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 07:52:10,729 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 07:52:10,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-27 07:52:10,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 07:52:10,942 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0REQUIRES_VIOLATION === [getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION (and 5 more)] === [2021-08-27 07:52:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 07:52:10,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1646357859, now seen corresponding path program 7 times [2021-08-27 07:52:10,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 07:52:10,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277896261] [2021-08-27 07:52:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 07:52:10,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 07:52:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 07:52:10,985 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 07:52:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 07:52:11,055 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 07:52:11,056 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 07:52:11,056 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0REQUIRES_VIOLATION [2021-08-27 07:52:11,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err0REQUIRES_VIOLATION [2021-08-27 07:52:11,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err1REQUIRES_VIOLATION [2021-08-27 07:52:11,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err2REQUIRES_VIOLATION [2021-08-27 07:52:11,058 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbers2Err3REQUIRES_VIOLATION [2021-08-27 07:52:11,059 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 07:52:11,059 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 07:52:11,059 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbersErr0REQUIRES_VIOLATION [2021-08-27 07:52:11,059 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location getNumbersErr1REQUIRES_VIOLATION [2021-08-27 07:52:11,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-27 07:52:11,067 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 07:52:11,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:52:11 BoogieIcfgContainer [2021-08-27 07:52:11,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 07:52:11,120 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 07:52:11,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 07:52:11,121 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 07:52:11,121 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:51:41" (3/4) ... [2021-08-27 07:52:11,123 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 07:52:11,163 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 07:52:11,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 07:52:11,164 INFO L168 Benchmark]: Toolchain (without parser) took 30636.19 ms. Allocated memory was 58.7 MB in the beginning and 383.8 MB in the end (delta: 325.1 MB). Free memory was 38.0 MB in the beginning and 210.4 MB in the end (delta: -172.4 MB). Peak memory consumption was 152.0 MB. Max. memory is 16.1 GB. [2021-08-27 07:52:11,165 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 41.2 MB in the end (delta: 50.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 07:52:11,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.02 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 28.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 07:52:11,165 INFO L168 Benchmark]: Boogie Preprocessor took 72.15 ms. Allocated memory is still 58.7 MB. Free memory was 28.6 MB in the beginning and 42.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 07:52:11,165 INFO L168 Benchmark]: RCFGBuilder took 394.88 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 42.3 MB in the beginning and 54.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-08-27 07:52:11,166 INFO L168 Benchmark]: TraceAbstraction took 29932.71 ms. Allocated memory was 71.3 MB in the beginning and 383.8 MB in the end (delta: 312.5 MB). Free memory was 54.3 MB in the beginning and 214.6 MB in the end (delta: -160.3 MB). Peak memory consumption was 151.9 MB. Max. memory is 16.1 GB. [2021-08-27 07:52:11,166 INFO L168 Benchmark]: Witness Printer took 43.26 ms. Allocated memory is still 383.8 MB. Free memory was 214.6 MB in the beginning and 210.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 07:52:11,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 41.2 MB in the end (delta: 50.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 187.02 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 28.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.15 ms. Allocated memory is still 58.7 MB. Free memory was 28.6 MB in the beginning and 42.3 MB in the end (delta: -13.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 394.88 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 42.3 MB in the beginning and 54.8 MB in the end (delta: -12.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 29932.71 ms. Allocated memory was 71.3 MB in the beginning and 383.8 MB in the end (delta: 312.5 MB). Free memory was 54.3 MB in the beginning and 214.6 MB in the end (delta: -160.3 MB). Peak memory consumption was 151.9 MB. Max. memory is 16.1 GB. * Witness Printer took 43.26 ms. Allocated memory is still 383.8 MB. Free memory was 214.6 MB in the beginning and 210.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1] int array[10]; VAL [\old(array)=null, \old(array)=null, array={11:0}] [L25] CALL, EXPR getNumbers2() VAL [array={11:0}] [L13] CALL, EXPR getNumbers() VAL [array={11:0}] [L5] int i = 0; VAL [array={11:0}, i=0] [L5] COND TRUE i < 10 VAL [array={11:0}, i=0] [L6] array[i] = i VAL [array={11:0}, i=0] [L5] ++i VAL [array={11:0}, i=1] [L5] COND TRUE i < 10 VAL [array={11:0}, i=1] [L6] array[i] = i VAL [array={11:0}, i=1] [L5] ++i VAL [array={11:0}, i=2] [L5] COND TRUE i < 10 VAL [array={11:0}, i=2] [L6] array[i] = i VAL [array={11:0}, i=2] [L5] ++i VAL [array={11:0}, i=3] [L5] COND TRUE i < 10 VAL [array={11:0}, i=3] [L6] array[i] = i VAL [array={11:0}, i=3] [L5] ++i VAL [array={11:0}, i=4] [L5] COND TRUE i < 10 VAL [array={11:0}, i=4] [L6] array[i] = i VAL [array={11:0}, i=4] [L5] ++i VAL [array={11:0}, i=5] [L5] COND TRUE i < 10 VAL [array={11:0}, i=5] [L6] array[i] = i VAL [array={11:0}, i=5] [L5] ++i VAL [array={11:0}, i=6] [L5] COND TRUE i < 10 VAL [array={11:0}, i=6] [L6] array[i] = i VAL [array={11:0}, i=6] [L5] ++i VAL [array={11:0}, i=7] [L5] COND TRUE i < 10 VAL [array={11:0}, i=7] [L6] array[i] = i VAL [array={11:0}, i=7] [L5] ++i VAL [array={11:0}, i=8] [L5] COND TRUE i < 10 VAL [array={11:0}, i=8] [L6] array[i] = i VAL [array={11:0}, i=8] [L5] ++i VAL [array={11:0}, i=9] [L5] COND TRUE i < 10 VAL [array={11:0}, i=9] [L6] array[i] = i VAL [array={11:0}, i=9] [L5] ++i VAL [array={11:0}, i=10] [L5] COND FALSE !(i < 10) VAL [array={11:0}, i=10] [L9] return array; VAL [\result={11:0}, array={11:0}, i=10] [L13] RET, EXPR getNumbers() VAL [array={11:0}, getNumbers()={11:0}] [L13] int* numbers = getNumbers(); [L15] int numbers2[10]; [L17] int i = 0; VAL [array={11:0}, i=0, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=0, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=0, numbers={11:0}, numbers2={10:0}, numbers[i]=0] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=0, numbers={11:0}, numbers2={10:0}, numbers[i]=0] [L17] ++i VAL [array={11:0}, i=1, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=1, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=1, numbers={11:0}, numbers2={10:0}, numbers[i]=1] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=1, numbers={11:0}, numbers2={10:0}, numbers[i]=1] [L17] ++i VAL [array={11:0}, i=2, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=2, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=2, numbers={11:0}, numbers2={10:0}, numbers[i]=2] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=2, numbers={11:0}, numbers2={10:0}, numbers[i]=2] [L17] ++i VAL [array={11:0}, i=3, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=3, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=3, numbers={11:0}, numbers2={10:0}, numbers[i]=3] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=3, numbers={11:0}, numbers2={10:0}, numbers[i]=3] [L17] ++i VAL [array={11:0}, i=4, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=4, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=4, numbers={11:0}, numbers2={10:0}, numbers[i]=4] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=4, numbers={11:0}, numbers2={10:0}, numbers[i]=4] [L17] ++i VAL [array={11:0}, i=5, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=5, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=5, numbers={11:0}, numbers2={10:0}, numbers[i]=5] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=5, numbers={11:0}, numbers2={10:0}, numbers[i]=5] [L17] ++i VAL [array={11:0}, i=6, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=6, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=6, numbers={11:0}, numbers2={10:0}, numbers[i]=6] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=6, numbers={11:0}, numbers2={10:0}, numbers[i]=6] [L17] ++i VAL [array={11:0}, i=7, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=7, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=7, numbers={11:0}, numbers2={10:0}, numbers[i]=7] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=7, numbers={11:0}, numbers2={10:0}, numbers[i]=7] [L17] ++i VAL [array={11:0}, i=8, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=8, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=8, numbers={11:0}, numbers2={10:0}, numbers[i]=8] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=8, numbers={11:0}, numbers2={10:0}, numbers[i]=8] [L17] ++i VAL [array={11:0}, i=9, numbers={11:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={11:0}, i=9, numbers={11:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={11:0}, i=9, numbers={11:0}, numbers2={10:0}, numbers[i]=9] [L18] numbers2[i] = numbers[i] VAL [array={11:0}, i=9, numbers={11:0}, numbers2={10:0}, numbers[i]=9] [L17] ++i VAL [array={11:0}, i=10, numbers={11:0}, numbers2={10:0}] [L17] COND FALSE !(i < 10) VAL [array={11:0}, i=10, numbers={11:0}, numbers2={10:0}] [L21] return numbers2; [L21] return numbers2; VAL [\result={10:0}, array={11:0}, i=10, numbers={11:0}] [L25] RET, EXPR getNumbers2() VAL [array={11:0}, getNumbers2()={10:0}] [L25] int *numbers = getNumbers2(); [L26] numbers[0] = 100 - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 6]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 6]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 29835.5ms, OverallIterations: 26, TraceHistogramMax: 10, EmptinessCheckTime: 32.4ms, AutomataDifference: 4314.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 624 SDtfs, 741 SDslu, 1924 SDs, 0 SdLazy, 2619 SolverSat, 217 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1796.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1429 GetRequests, 1095 SyntacticMatches, 3 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 4261.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=25, InterpolantAutomatonStates: 249, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 113.2ms AutomataMinimizationTime, 25 MinimizatonAttempts, 57 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 238.9ms SsaConstructionTime, 2250.2ms SatisfiabilityAnalysisTime, 11174.6ms InterpolantComputationTime, 2267 NumberOfCodeBlocks, 2130 NumberOfCodeBlocksAsserted, 92 NumberOfCheckSat, 2121 ConstructedInterpolants, 26 QuantifiedInterpolants, 10668 SizeOfPredicates, 40 NumberOfNonLiveVariables, 3567 ConjunctsInSsa, 288 ConjunctsInUnsatCore, 47 InterpolantComputations, 8 PerfectInterpolantSequences, 2935/4994 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-27 07:52:11,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...