./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ed0b12ce7ca8412687eea32cd5c4beaf5275fff5c5bfef18c07965c0f054672 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 15:23:19,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 15:23:19,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 15:23:19,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 15:23:19,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 15:23:19,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 15:23:19,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 15:23:19,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 15:23:19,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 15:23:19,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 15:23:19,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 15:23:19,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 15:23:19,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 15:23:19,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 15:23:19,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 15:23:19,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 15:23:19,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 15:23:19,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 15:23:19,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 15:23:19,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 15:23:19,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 15:23:19,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 15:23:19,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 15:23:19,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 15:23:19,674 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 15:23:19,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 15:23:19,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 15:23:19,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 15:23:19,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 15:23:19,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 15:23:19,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 15:23:19,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 15:23:19,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 15:23:19,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 15:23:19,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 15:23:19,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 15:23:19,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 15:23:19,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 15:23:19,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 15:23:19,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 15:23:19,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 15:23:19,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-19 15:23:19,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 15:23:19,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 15:23:19,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 15:23:19,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 15:23:19,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 15:23:19,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 15:23:19,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 15:23:19,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 15:23:19,715 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 15:23:19,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 15:23:19,715 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 15:23:19,716 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 15:23:19,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 15:23:19,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 15:23:19,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 15:23:19,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 15:23:19,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 15:23:19,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 15:23:19,717 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 15:23:19,717 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 15:23:19,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 15:23:19,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 15:23:19,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 15:23:19,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 15:23:19,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 15:23:19,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 15:23:19,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:23:19,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 15:23:19,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 15:23:19,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 15:23:19,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 15:23:19,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 15:23:19,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 15:23:19,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 15:23:19,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ed0b12ce7ca8412687eea32cd5c4beaf5275fff5c5bfef18c07965c0f054672 [2021-12-19 15:23:19,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 15:23:19,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 15:23:19,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 15:23:19,937 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 15:23:19,938 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 15:23:19,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2021-12-19 15:23:19,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a09dfd0/f74546043e8749b7bb25a9977a8a8605/FLAGcb44701c6 [2021-12-19 15:23:20,347 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 15:23:20,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2021-12-19 15:23:20,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a09dfd0/f74546043e8749b7bb25a9977a8a8605/FLAGcb44701c6 [2021-12-19 15:23:20,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a09dfd0/f74546043e8749b7bb25a9977a8a8605 [2021-12-19 15:23:20,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 15:23:20,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 15:23:20,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 15:23:20,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 15:23:20,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 15:23:20,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e587c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20, skipping insertion in model container [2021-12-19 15:23:20,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 15:23:20,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 15:23:20,508 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i[873,886] [2021-12-19 15:23:20,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:23:20,517 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 15:23:20,524 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i[873,886] [2021-12-19 15:23:20,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:23:20,537 INFO L208 MainTranslator]: Completed translation [2021-12-19 15:23:20,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20 WrapperNode [2021-12-19 15:23:20,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 15:23:20,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 15:23:20,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 15:23:20,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 15:23:20,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,561 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2021-12-19 15:23:20,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 15:23:20,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 15:23:20,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 15:23:20,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 15:23:20,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 15:23:20,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 15:23:20,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 15:23:20,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 15:23:20,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20" (1/1) ... [2021-12-19 15:23:20,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:23:20,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:23:20,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-19 15:23:20,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-19 15:23:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 15:23:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 15:23:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 15:23:20,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 15:23:20,664 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 15:23:20,665 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 15:23:20,783 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 15:23:20,787 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 15:23:20,787 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 15:23:20,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:23:20 BoogieIcfgContainer [2021-12-19 15:23:20,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 15:23:20,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 15:23:20,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 15:23:20,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 15:23:20,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:23:20" (1/3) ... [2021-12-19 15:23:20,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0bde8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:23:20, skipping insertion in model container [2021-12-19 15:23:20,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:23:20" (2/3) ... [2021-12-19 15:23:20,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0bde8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:23:20, skipping insertion in model container [2021-12-19 15:23:20,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:23:20" (3/3) ... [2021-12-19 15:23:20,796 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark22_conjunctive.i [2021-12-19 15:23:20,800 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 15:23:20,800 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-19 15:23:20,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 15:23:20,851 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-19 15:23:20,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-19 15:23:20,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-19 15:23:20,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:23:20,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-19 15:23:20,873 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:23:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:23:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-12-19 15:23:20,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:23:20,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925351850] [2021-12-19 15:23:20,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:20,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:23:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:21,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:23:21,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925351850] [2021-12-19 15:23:21,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925351850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:23:21,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:23:21,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:23:21,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575230705] [2021-12-19 15:23:21,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:23:21,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:23:21,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:23:21,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:23:21,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:23:21,076 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:23:21,121 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-12-19 15:23:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:23:21,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-19 15:23:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:23:21,128 INFO L225 Difference]: With dead ends: 34 [2021-12-19 15:23:21,129 INFO L226 Difference]: Without dead ends: 15 [2021-12-19 15:23:21,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:23:21,136 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:23:21,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 27 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:23:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-19 15:23:21,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-12-19 15:23:21,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-19 15:23:21,159 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-12-19 15:23:21,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:23:21,160 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-19 15:23:21,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,160 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-19 15:23:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-19 15:23:21,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:23:21,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-19 15:23:21,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 15:23:21,162 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:23:21,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:23:21,164 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-12-19 15:23:21,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:23:21,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775068136] [2021-12-19 15:23:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:21,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:23:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:21,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:23:21,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775068136] [2021-12-19 15:23:21,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775068136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:23:21,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:23:21,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:23:21,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817592957] [2021-12-19 15:23:21,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:23:21,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:23:21,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:23:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:23:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:23:21,220 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:23:21,234 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-12-19 15:23:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:23:21,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-19 15:23:21,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:23:21,236 INFO L225 Difference]: With dead ends: 16 [2021-12-19 15:23:21,236 INFO L226 Difference]: Without dead ends: 15 [2021-12-19 15:23:21,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:23:21,240 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:23:21,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:23:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-19 15:23:21,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-19 15:23:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-12-19 15:23:21,247 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2021-12-19 15:23:21,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:23:21,248 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-12-19 15:23:21,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,248 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-12-19 15:23:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-19 15:23:21,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:23:21,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:23:21,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-19 15:23:21,252 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:23:21,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:23:21,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-12-19 15:23:21,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:23:21,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703659238] [2021-12-19 15:23:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:21,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:23:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:21,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:23:21,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703659238] [2021-12-19 15:23:21,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703659238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:23:21,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:23:21,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:23:21,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229289902] [2021-12-19 15:23:21,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:23:21,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:23:21,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:23:21,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:23:21,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:23:21,292 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:23:21,318 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-12-19 15:23:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 15:23:21,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-19 15:23:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:23:21,319 INFO L225 Difference]: With dead ends: 19 [2021-12-19 15:23:21,319 INFO L226 Difference]: Without dead ends: 18 [2021-12-19 15:23:21,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:23:21,324 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:23:21,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:23:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-19 15:23:21,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-12-19 15:23:21,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-12-19 15:23:21,330 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-12-19 15:23:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:23:21,330 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-12-19 15:23:21,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-12-19 15:23:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-19 15:23:21,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:23:21,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:23:21,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-19 15:23:21,331 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:23:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:23:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-12-19 15:23:21,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:23:21,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703066805] [2021-12-19 15:23:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:21,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:23:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:21,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:23:21,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703066805] [2021-12-19 15:23:21,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703066805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:23:21,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:23:21,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:23:21,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993280908] [2021-12-19 15:23:21,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:23:21,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:23:21,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:23:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:23:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:23:21,376 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:23:21,404 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-12-19 15:23:21,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:23:21,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-19 15:23:21,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:23:21,405 INFO L225 Difference]: With dead ends: 16 [2021-12-19 15:23:21,405 INFO L226 Difference]: Without dead ends: 15 [2021-12-19 15:23:21,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:23:21,411 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:23:21,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 8 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:23:21,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-19 15:23:21,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-19 15:23:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-12-19 15:23:21,414 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-12-19 15:23:21,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:23:21,414 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-12-19 15:23:21,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,415 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-12-19 15:23:21,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-19 15:23:21,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:23:21,415 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:23:21,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-19 15:23:21,416 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:23:21,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:23:21,416 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-12-19 15:23:21,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:23:21,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317658682] [2021-12-19 15:23:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:21,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:23:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:21,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:23:21,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317658682] [2021-12-19 15:23:21,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317658682] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:23:21,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94511497] [2021-12-19 15:23:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:21,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:21,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:23:21,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:23:21,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 15:23:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:21,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 15:23:21,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:23:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:21,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:23:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:21,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94511497] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:23:21,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:23:21,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-12-19 15:23:21,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683107698] [2021-12-19 15:23:21,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:23:21,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-19 15:23:21,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:23:21,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-19 15:23:21,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-19 15:23:21,672 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:23:21,738 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-12-19 15:23:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-19 15:23:21,739 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-19 15:23:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:23:21,739 INFO L225 Difference]: With dead ends: 26 [2021-12-19 15:23:21,739 INFO L226 Difference]: Without dead ends: 25 [2021-12-19 15:23:21,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-12-19 15:23:21,740 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:23:21,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 18 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:23:21,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-19 15:23:21,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-12-19 15:23:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-12-19 15:23:21,743 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 10 [2021-12-19 15:23:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:23:21,743 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-12-19 15:23:21,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:21,744 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-12-19 15:23:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-19 15:23:21,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:23:21,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:23:21,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-19 15:23:21,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:21,961 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:23:21,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:23:21,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1472766433, now seen corresponding path program 1 times [2021-12-19 15:23:21,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:23:21,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901973284] [2021-12-19 15:23:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:21,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:23:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:21,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:23:21,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901973284] [2021-12-19 15:23:21,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901973284] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:23:21,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853572843] [2021-12-19 15:23:21,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:21,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:21,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:23:21,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:23:21,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 15:23:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:22,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 15:23:22,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:23:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:22,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:23:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:22,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853572843] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:23:22,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:23:22,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-12-19 15:23:22,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400848053] [2021-12-19 15:23:22,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:23:22,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-19 15:23:22,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:23:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-19 15:23:22,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-19 15:23:22,110 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:22,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:23:22,212 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-12-19 15:23:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-19 15:23:22,213 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-19 15:23:22,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:23:22,213 INFO L225 Difference]: With dead ends: 26 [2021-12-19 15:23:22,213 INFO L226 Difference]: Without dead ends: 25 [2021-12-19 15:23:22,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-12-19 15:23:22,214 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:23:22,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:23:22,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-19 15:23:22,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-12-19 15:23:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-12-19 15:23:22,217 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2021-12-19 15:23:22,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:23:22,217 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-12-19 15:23:22,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:22,217 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-12-19 15:23:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-19 15:23:22,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:23:22,217 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-19 15:23:22,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-19 15:23:22,427 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,SelfDestructingSolverStorable5 [2021-12-19 15:23:22,428 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:23:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:23:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2021-12-19 15:23:22,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:23:22,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522953793] [2021-12-19 15:23:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:22,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:23:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:22,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:23:22,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522953793] [2021-12-19 15:23:22,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522953793] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:23:22,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646561087] [2021-12-19 15:23:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:22,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:22,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:23:22,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:23:22,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-19 15:23:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:22,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 15:23:22,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:23:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:22,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:23:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:22,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646561087] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:23:22,579 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:23:22,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-19 15:23:22,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151308624] [2021-12-19 15:23:22,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:23:22,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-19 15:23:22,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:23:22,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-19 15:23:22,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-19 15:23:22,581 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:22,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:23:22,628 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-12-19 15:23:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 15:23:22,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-19 15:23:22,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:23:22,629 INFO L225 Difference]: With dead ends: 34 [2021-12-19 15:23:22,629 INFO L226 Difference]: Without dead ends: 33 [2021-12-19 15:23:22,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-19 15:23:22,630 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:23:22,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 23 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:23:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-19 15:23:22,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-12-19 15:23:22,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-12-19 15:23:22,633 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 12 [2021-12-19 15:23:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:23:22,634 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-12-19 15:23:22,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:22,634 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-12-19 15:23:22,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-19 15:23:22,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:23:22,635 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2021-12-19 15:23:22,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-19 15:23:22,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:22,843 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:23:22,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:23:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1418773263, now seen corresponding path program 2 times [2021-12-19 15:23:22,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:23:22,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308646517] [2021-12-19 15:23:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:22,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:23:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:22,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:23:22,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308646517] [2021-12-19 15:23:22,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308646517] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:23:22,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981363185] [2021-12-19 15:23:22,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:23:22,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:22,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:23:22,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:23:22,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-19 15:23:22,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:23:22,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:23:22,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-19 15:23:22,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:23:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:23,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:23:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:23,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981363185] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:23:23,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:23:23,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2021-12-19 15:23:23,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646113776] [2021-12-19 15:23:23,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:23:23,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-19 15:23:23,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:23:23,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-19 15:23:23,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2021-12-19 15:23:23,265 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:23,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:23:23,512 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-12-19 15:23:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-19 15:23:23,513 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-19 15:23:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:23:23,513 INFO L225 Difference]: With dead ends: 49 [2021-12-19 15:23:23,513 INFO L226 Difference]: Without dead ends: 48 [2021-12-19 15:23:23,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2021-12-19 15:23:23,514 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:23:23,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 39 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:23:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-19 15:23:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2021-12-19 15:23:23,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.2) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:23,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-12-19 15:23:23,520 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 20 [2021-12-19 15:23:23,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:23:23,520 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-12-19 15:23:23,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:23,520 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-12-19 15:23:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-19 15:23:23,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:23:23,520 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1] [2021-12-19 15:23:23,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-19 15:23:23,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:23,727 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:23:23,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:23:23,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1032298143, now seen corresponding path program 2 times [2021-12-19 15:23:23,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:23:23,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755072236] [2021-12-19 15:23:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:23,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:23:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:23,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:23:23,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755072236] [2021-12-19 15:23:23,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755072236] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:23:23,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356484594] [2021-12-19 15:23:23,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:23:23,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:23,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:23:23,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:23:23,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-19 15:23:23,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:23:23,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:23:23,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-19 15:23:23,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:23:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:23,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:23:23,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356484594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:23:23,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-19 15:23:23,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2021-12-19 15:23:23,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71191847] [2021-12-19 15:23:23,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:23:23,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-19 15:23:23,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:23:23,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-19 15:23:23,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-19 15:23:23,983 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:23:24,042 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-19 15:23:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-19 15:23:24,042 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-19 15:23:24,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:23:24,043 INFO L225 Difference]: With dead ends: 43 [2021-12-19 15:23:24,043 INFO L226 Difference]: Without dead ends: 42 [2021-12-19 15:23:24,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-12-19 15:23:24,045 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:23:24,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 29 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:23:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-19 15:23:24,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-12-19 15:23:24,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.1) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2021-12-19 15:23:24,055 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 21 [2021-12-19 15:23:24,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:23:24,056 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-12-19 15:23:24,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2021-12-19 15:23:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-19 15:23:24,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:23:24,057 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-12-19 15:23:24,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-19 15:23:24,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:24,271 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:23:24,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:23:24,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1410159193, now seen corresponding path program 2 times [2021-12-19 15:23:24,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:23:24,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205075888] [2021-12-19 15:23:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:24,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:23:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:24,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:23:24,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205075888] [2021-12-19 15:23:24,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205075888] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:23:24,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228054730] [2021-12-19 15:23:24,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:23:24,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:24,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:23:24,347 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:23:24,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-19 15:23:24,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:23:24,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:23:24,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-19 15:23:24,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:23:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:24,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:23:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:24,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228054730] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:23:24,744 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:23:24,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2021-12-19 15:23:24,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762720686] [2021-12-19 15:23:24,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:23:24,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-19 15:23:24,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:23:24,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-19 15:23:24,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2021-12-19 15:23:24,746 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:24,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:23:24,981 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-12-19 15:23:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-19 15:23:24,982 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-19 15:23:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:23:24,982 INFO L225 Difference]: With dead ends: 42 [2021-12-19 15:23:24,982 INFO L226 Difference]: Without dead ends: 41 [2021-12-19 15:23:24,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1565, Unknown=0, NotChecked=0, Total=1980 [2021-12-19 15:23:24,984 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 74 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:23:24,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 69 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:23:24,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-19 15:23:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-12-19 15:23:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-12-19 15:23:24,987 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 27 [2021-12-19 15:23:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:23:24,987 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-12-19 15:23:24,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:23:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-12-19 15:23:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-19 15:23:24,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:23:24,988 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1] [2021-12-19 15:23:25,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-19 15:23:25,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:25,195 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:23:25,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:23:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash 915144177, now seen corresponding path program 3 times [2021-12-19 15:23:25,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:23:25,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782987620] [2021-12-19 15:23:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:23:25,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:23:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:23:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:25,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:23:25,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782987620] [2021-12-19 15:23:25,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782987620] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:23:25,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662665648] [2021-12-19 15:23:25,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:23:25,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:23:25,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:23:25,341 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:23:25,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-19 15:23:25,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-19 15:23:25,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:23:25,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-19 15:23:25,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:23:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:23:25,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:24:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:24:11,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662665648] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:24:11,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 15:24:11,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 17] total 47 [2021-12-19 15:24:11,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519868982] [2021-12-19 15:24:11,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 15:24:11,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-19 15:24:11,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:24:11,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-19 15:24:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1896, Unknown=18, NotChecked=0, Total=2256 [2021-12-19 15:24:11,495 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 48 states, 47 states have (on average 2.4680851063829787) internal successors, (116), 48 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:24:13,652 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~x~0#1| (- 1)))) (let ((.cse12 (+ |c_ULTIMATE.start_main_#t~post4#1| 1)) (.cse2 (* |c_ULTIMATE.start_main_~y~0#1| (- 1))) (.cse1 (* 2 |c_ULTIMATE.start_main_~y~0#1|)) (.cse13 (+ (div (+ .cse0 2147483639) 2) 1))) (and (<= |c_ULTIMATE.start_main_#t~post4#1| (div (+ .cse0 (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483641) 2)) (<= (+ .cse1 |c_ULTIMATE.start_main_~x~0#1|) 2147483646) (<= |c_ULTIMATE.start_main_~y~0#1| (div (+ (div (+ .cse2 .cse0 2147483639) 2) (- 1)) 2)) (forall ((|aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| Int) (|aux_div_v_ULTIMATE.start_main_~x~0#1_47_70| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391| Int) (|aux_div_v_ULTIMATE.start_main_~x~0#1_46_127| Int) (|aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| Int) (|aux_div_v_ULTIMATE.start_main_~y~0#1_26_275| Int)) (let ((.cse10 (* 4 |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127|)) (.cse3 (* 4 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|)) (.cse4 (* 2 |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|)) (.cse11 (div (+ (* |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 4) (* |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127| (- 2)) (* |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 2) 4) 4)) (.cse7 (* 2 |aux_div_v_ULTIMATE.start_main_~x~0#1_47_70|)) (.cse8 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369|)) (.cse5 (* 2 |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127|)) (.cse9 (* 5 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391|)) (.cse6 (* 5 |aux_div_v_ULTIMATE.start_main_~y~0#1_26_275|))) (or (<= (+ .cse3 |c_ULTIMATE.start_main_#t~post4#1| .cse4 15) (+ .cse5 .cse6)) (<= 2 |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|) (<= (+ .cse3 .cse4 4) (+ .cse7 .cse8 .cse9 .cse10)) (<= 0 (+ .cse7 .cse8 .cse5 .cse11 9)) (<= (+ .cse7 .cse8 .cse9 .cse10 7) (+ .cse3 .cse4)) (<= (+ .cse8 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_#t~post4#1| .cse9 .cse10) (+ .cse3 .cse4 2147483638)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 2) .cse11) (<= |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127| 0) (<= |aux_div_v_ULTIMATE.start_main_~y~0#1_26_275| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369| 1)) (<= |aux_div_v_ULTIMATE.start_main_~y~0#1_26_275| (+ .cse11 1)) (< |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 0) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391| (+ |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 1)) (<= (+ (* 2 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|) |aux_div_v_ULTIMATE.start_main_~x~0#1_47_70| |c_ULTIMATE.start_main_#t~post4#1| |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 10) 0) (<= (+ |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_#t~post4#1|) (+ .cse7 2147483643)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127| 1) (div (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369| (- 5)) (* |c_ULTIMATE.start_main_~x~0#1| (- 1)) 2147483630) 2)) (<= (+ .cse7 .cse8 |c_ULTIMATE.start_main_#t~post4#1| .cse5 17) 0) (<= (+ .cse9 5) .cse6) (<= (+ |aux_div_v_ULTIMATE.start_main_~y~0#1_26_275| 1) |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391|)))) (<= .cse12 (div .cse13 2)) (forall ((|aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391| Int) (|aux_div_v_ULTIMATE.start_main_~x~0#1_46_127| Int) (|aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| Int) (|aux_div_v_ULTIMATE.start_main_~y~0#1_26_275| Int)) (let ((.cse14 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369|)) (.cse21 (* 5 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391|))) (let ((.cse17 (+ .cse14 |c_ULTIMATE.start_main_~x~0#1| .cse21 (* 4 |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127|))) (.cse16 (div (+ (* |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 4) (* |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127| (- 2)) (* |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 2) 4) 4)) (.cse18 (* 4 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|)) (.cse19 (* 2 |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|)) (.cse20 (* 5 |aux_div_v_ULTIMATE.start_main_~y~0#1_26_275|)) (.cse15 (* 2 |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127|))) (or (<= 2 |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|) (<= (+ (* 2 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|) |c_ULTIMATE.start_main_#t~post4#1| (div (+ (* |c_ULTIMATE.start_main_~x~0#1| (- 1)) 2147483646) (- 2)) |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 9) 0) (<= 2147483636 (+ .cse14 |c_ULTIMATE.start_main_~x~0#1| .cse15 .cse16)) (<= .cse17 (+ .cse18 .cse19 2147483639)) (<= |aux_div_v_ULTIMATE.start_main_~y~0#1_26_275| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369| 1)) (<= |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127| 0) (< |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 0) (<= (+ .cse18 .cse19 2147483649) .cse17) (<= |aux_div_v_ULTIMATE.start_main_~y~0#1_26_275| (+ .cse16 1)) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391| (+ |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 1)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) .cse16) (<= (+ .cse18 |c_ULTIMATE.start_main_#t~post4#1| .cse19 14) (+ .cse15 .cse20)) (<= (+ .cse21 5) .cse20) (<= (+ |aux_div_v_ULTIMATE.start_main_~y~0#1_26_275| 1) |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391|) (<= (+ .cse14 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_#t~post4#1| .cse15) 2147483630))))) (<= (+ |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~x~0#1|) 2147483647) (<= .cse12 (div (+ .cse0 2147483646) 2)) (<= |c_ULTIMATE.start_main_~y~0#1| (div (+ .cse2 .cse0 2147483644) 2)) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63| Int)) (or (<= (div (+ |c_ULTIMATE.start_main_~x~0#1| (* |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63| 5) (- 2147483637)) (- 2)) 0) (<= (+ (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63|) 1) (div (+ (* |c_ULTIMATE.start_main_~x~0#1| (- 1)) (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483634) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63|))) (<= .cse1 .cse13) (<= (+ |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_#t~post4#1|) 2147483646)))) is different from false [2021-12-19 15:25:00,885 WARN L227 SmtUtils]: Spent 17.40s on a formula simplification. DAG size of input: 143 DAG size of output: 137 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-19 15:25:13,280 WARN L227 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 118 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-19 15:25:55,914 WARN L227 SmtUtils]: Spent 16.38s on a formula simplification. DAG size of input: 99 DAG size of output: 93 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-19 15:25:57,924 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_#t~post4#1| 1)) (.cse0 (* |c_ULTIMATE.start_main_~x~0#1| (- 1)))) (and (<= |c_ULTIMATE.start_main_#t~post4#1| (div (+ .cse0 (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483641) 2)) (<= .cse1 (div (+ (div (+ .cse0 2147483639) 2) 1) 2)) (<= .cse1 (div (+ .cse0 2147483646) 2)) (forall ((|aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391| Int) (|aux_div_v_ULTIMATE.start_main_~x~0#1_46_127| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391_165| Int) (|aux_div_v_ULTIMATE.start_main_~y~0#1_26_275| Int) (|aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| Int)) (let ((.cse5 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369|)) (.cse10 (* 5 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391|))) (let ((.cse7 (+ .cse5 |c_ULTIMATE.start_main_~x~0#1| .cse10 (* 4 |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127|))) (.cse4 (div (+ (* |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 4) (* |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127| (- 2)) (* |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 2) 4) 4)) (.cse8 (* 4 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|)) (.cse9 (* 2 |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|)) (.cse2 (* 5 |aux_div_v_ULTIMATE.start_main_~y~0#1_26_275|)) (.cse3 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391_165|)) (.cse6 (* 2 |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127|))) (or (<= (+ .cse2 5) .cse3) (<= 2 |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|) (<= (+ (* 2 |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75|) |c_ULTIMATE.start_main_#t~post4#1| (div (+ (* |c_ULTIMATE.start_main_~x~0#1| (- 1)) 2147483646) (- 2)) |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 9) 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391_165| (+ .cse4 1)) (<= 2147483636 (+ .cse5 |c_ULTIMATE.start_main_~x~0#1| .cse6 .cse4)) (<= .cse7 (+ .cse8 .cse9 2147483639)) (<= |aux_div_v_ULTIMATE.start_main_~y~0#1_26_275| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369| 1)) (<= |aux_div_v_ULTIMATE.start_main_~x~0#1_46_127| 0) (< |aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 0) (<= (+ .cse8 .cse9 2147483649) .cse7) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_26_275_369_391| (+ |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~x~0#1_46_127_236_75| 1)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) .cse4) (<= (+ .cse8 |c_ULTIMATE.start_main_#t~post4#1| .cse9 14) (+ .cse6 .cse2)) (<= (+ .cse10 5) .cse2) (<= (+ .cse3 5) .cse10) (<= (+ .cse5 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_#t~post4#1| .cse6) 2147483630))))) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63| Int)) (or (<= (div (+ |c_ULTIMATE.start_main_~x~0#1| (* |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63| 5) (- 2147483637)) (- 2)) 0) (<= (+ (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63|) 1) (div (+ (* |c_ULTIMATE.start_main_~x~0#1| (- 1)) (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483634) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63|))) (<= (+ |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_#t~post4#1|) 2147483646))) is different from false [2021-12-19 15:26:06,455 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_#t~post4#1| 1)) (.cse0 (* |c_ULTIMATE.start_main_~x~0#1| (- 1)))) (and (<= |c_ULTIMATE.start_main_#t~post4#1| (div (+ .cse0 (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483641) 2)) (<= .cse1 (div (+ (div (+ .cse0 2147483639) 2) 1) 2)) (<= .cse1 (div (+ .cse0 2147483646) 2)) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63| Int)) (or (<= (div (+ |c_ULTIMATE.start_main_~x~0#1| (* |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63| 5) (- 2147483637)) (- 2)) 0) (<= (+ (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63|) 1) (div (+ (* |c_ULTIMATE.start_main_~x~0#1| (- 1)) (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483634) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_25_105_63|))) (<= (+ |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_#t~post4#1|) 2147483646))) is different from false [2021-12-19 15:26:09,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:26:09,004 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2021-12-19 15:26:09,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-19 15:26:09,005 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.4680851063829787) internal successors, (116), 48 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-12-19 15:26:09,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:26:09,005 INFO L225 Difference]: With dead ends: 82 [2021-12-19 15:26:09,005 INFO L226 Difference]: Without dead ends: 81 [2021-12-19 15:26:09,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 159.2s TimeCoverageRelationStatistics Valid=871, Invalid=3521, Unknown=42, NotChecked=396, Total=4830 [2021-12-19 15:26:09,009 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 78 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:26:09,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 69 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 139 Invalid, 0 Unknown, 143 Unchecked, 0.1s Time] [2021-12-19 15:26:09,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-19 15:26:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-12-19 15:26:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:26:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2021-12-19 15:26:09,017 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 40 [2021-12-19 15:26:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:26:09,017 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2021-12-19 15:26:09,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.4680851063829787) internal successors, (116), 48 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:26:09,017 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2021-12-19 15:26:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-19 15:26:09,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:26:09,020 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1] [2021-12-19 15:26:09,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-19 15:26:09,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:26:09,228 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-19 15:26:09,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:26:09,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1816526833, now seen corresponding path program 4 times [2021-12-19 15:26:09,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:26:09,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131194186] [2021-12-19 15:26:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:26:09,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:26:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:26:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:26:09,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:26:09,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131194186] [2021-12-19 15:26:09,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131194186] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 15:26:09,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156605821] [2021-12-19 15:26:09,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 15:26:09,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:26:09,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:26:09,851 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:26:09,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-19 15:26:09,897 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 15:26:09,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:26:09,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-19 15:26:09,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:26:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:26:11,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15