./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/EvenOdd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 35987657 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/recursive/EvenOdd01-1.c -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 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 00:41:48,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 00:41:48,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 00:41:48,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 00:41:48,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 00:41:48,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 00:41:48,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 00:41:48,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 00:41:48,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 00:41:48,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 00:41:48,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 00:41:48,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 00:41:48,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 00:41:48,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 00:41:48,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 00:41:48,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 00:41:48,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 00:41:48,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 00:41:48,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 00:41:48,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 00:41:48,642 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 00:41:48,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 00:41:48,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 00:41:48,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 00:41:48,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 00:41:48,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 00:41:48,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 00:41:48,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 00:41:48,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 00:41:48,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 00:41:48,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 00:41:48,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 00:41:48,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 00:41:48,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 00:41:48,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 00:41:48,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 00:41:48,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 00:41:48,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 00:41:48,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 00:41:48,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 00:41:48,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 00:41:48,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 00:41:48,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-22 00:41:48,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 00:41:48,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 00:41:48,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 00:41:48,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 00:41:48,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 00:41:48,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 00:41:48,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 00:41:48,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 00:41:48,670 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 00:41:48,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 00:41:48,671 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 00:41:48,671 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 00:41:48,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 00:41:48,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 00:41:48,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 00:41:48,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 00:41:48,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 00:41:48,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 00:41:48,672 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-22 00:41:48,672 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 00:41:48,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 00:41:48,672 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 00:41:48,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 00:41:48,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 00:41:48,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 00:41:48,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 00:41:48,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:41:48,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 00:41:48,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 00:41:48,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 00:41:48,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 00:41:48,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 00:41:48,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 00:41:48,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90982c548a5fc18702a6b533ab589c969b87a7efde724f265c9d2a7d593347dc [2022-07-22 00:41:48,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 00:41:48,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 00:41:48,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 00:41:48,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 00:41:48,959 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 00:41:48,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/EvenOdd01-1.c [2022-07-22 00:41:49,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88580b030/a01ea5998f044c6c9ab976761ae98b02/FLAG60f328858 [2022-07-22 00:41:49,358 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 00:41:49,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/EvenOdd01-1.c [2022-07-22 00:41:49,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88580b030/a01ea5998f044c6c9ab976761ae98b02/FLAG60f328858 [2022-07-22 00:41:49,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88580b030/a01ea5998f044c6c9ab976761ae98b02 [2022-07-22 00:41:49,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 00:41:49,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 00:41:49,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 00:41:49,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 00:41:49,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 00:41:49,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:49,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f54be61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49, skipping insertion in model container [2022-07-22 00:41:49,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:49,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 00:41:49,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 00:41:49,911 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/recursive/EvenOdd01-1.c[975,988] [2022-07-22 00:41:49,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:41:49,917 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 00:41:49,929 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/recursive/EvenOdd01-1.c[975,988] [2022-07-22 00:41:49,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:41:49,943 INFO L208 MainTranslator]: Completed translation [2022-07-22 00:41:49,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49 WrapperNode [2022-07-22 00:41:49,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 00:41:49,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 00:41:49,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 00:41:49,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 00:41:49,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:49,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:49,983 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-07-22 00:41:49,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 00:41:49,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 00:41:49,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 00:41:49,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 00:41:49,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:49,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:49,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:49,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:49,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:49,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:49,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:49,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 00:41:49,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 00:41:49,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 00:41:49,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 00:41:49,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49" (1/1) ... [2022-07-22 00:41:50,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:41:50,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:41:50,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 00:41:50,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 00:41:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 00:41:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2022-07-22 00:41:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2022-07-22 00:41:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 00:41:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2022-07-22 00:41:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2022-07-22 00:41:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 00:41:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 00:41:50,102 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 00:41:50,103 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 00:41:50,244 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 00:41:50,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 00:41:50,248 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 00:41:50,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:41:50 BoogieIcfgContainer [2022-07-22 00:41:50,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 00:41:50,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 00:41:50,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 00:41:50,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 00:41:50,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:41:49" (1/3) ... [2022-07-22 00:41:50,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311f7a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:41:50, skipping insertion in model container [2022-07-22 00:41:50,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:41:49" (2/3) ... [2022-07-22 00:41:50,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311f7a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:41:50, skipping insertion in model container [2022-07-22 00:41:50,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:41:50" (3/3) ... [2022-07-22 00:41:50,255 INFO L111 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2022-07-22 00:41:50,279 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 00:41:50,279 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-22 00:41:50,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 00:41:50,357 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@ff6752, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fd0c5f5 [2022-07-22 00:41:50,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 00:41:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 00:41:50,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 00:41:50,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:41:50,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:41:50,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:41:50,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:41:50,370 INFO L85 PathProgramCache]: Analyzing trace with hash -592993799, now seen corresponding path program 1 times [2022-07-22 00:41:50,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:41:50,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947724051] [2022-07-22 00:41:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:41:50,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:41:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:41:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:50,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:41:50,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947724051] [2022-07-22 00:41:50,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947724051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:41:50,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:41:50,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 00:41:50,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026819682] [2022-07-22 00:41:50,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:41:50,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 00:41:50,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:41:50,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 00:41:50,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:41:50,617 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:41:50,703 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2022-07-22 00:41:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 00:41:50,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-22 00:41:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:41:50,711 INFO L225 Difference]: With dead ends: 48 [2022-07-22 00:41:50,711 INFO L226 Difference]: Without dead ends: 27 [2022-07-22 00:41:50,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 00:41:50,717 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:41:50,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 96 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:41:50,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-22 00:41:50,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-07-22 00:41:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-07-22 00:41:50,753 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2022-07-22 00:41:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:41:50,754 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-07-22 00:41:50,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:50,755 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-07-22 00:41:50,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-22 00:41:50,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:41:50,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:41:50,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 00:41:50,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:41:50,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:41:50,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1202938527, now seen corresponding path program 1 times [2022-07-22 00:41:50,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:41:50,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645882063] [2022-07-22 00:41:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:41:50,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:41:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:41:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:50,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:41:50,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645882063] [2022-07-22 00:41:50,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645882063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:41:50,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:41:50,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 00:41:50,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622887137] [2022-07-22 00:41:50,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:41:50,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 00:41:50,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:41:50,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 00:41:50,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:41:50,819 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:50,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:41:50,871 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-07-22 00:41:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 00:41:50,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-22 00:41:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:41:50,873 INFO L225 Difference]: With dead ends: 27 [2022-07-22 00:41:50,873 INFO L226 Difference]: Without dead ends: 26 [2022-07-22 00:41:50,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 00:41:50,875 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:41:50,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:41:50,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-22 00:41:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-07-22 00:41:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-07-22 00:41:50,879 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 9 [2022-07-22 00:41:50,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:41:50,879 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-07-22 00:41:50,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:50,880 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-07-22 00:41:50,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-22 00:41:50,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:41:50,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:41:50,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 00:41:50,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:41:50,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:41:50,881 INFO L85 PathProgramCache]: Analyzing trace with hash 708932889, now seen corresponding path program 1 times [2022-07-22 00:41:50,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:41:50,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202437226] [2022-07-22 00:41:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:41:50,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:41:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:41:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:50,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:41:50,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202437226] [2022-07-22 00:41:50,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202437226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:41:50,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:41:50,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 00:41:50,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674536768] [2022-07-22 00:41:50,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:41:50,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 00:41:50,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:41:50,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 00:41:50,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 00:41:50,931 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:41:50,989 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-07-22 00:41:50,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 00:41:50,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-22 00:41:50,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:41:50,991 INFO L225 Difference]: With dead ends: 25 [2022-07-22 00:41:50,991 INFO L226 Difference]: Without dead ends: 23 [2022-07-22 00:41:50,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 00:41:50,992 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:41:50,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 14 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:41:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-22 00:41:50,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-22 00:41:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-07-22 00:41:50,996 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2022-07-22 00:41:50,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:41:50,997 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-07-22 00:41:50,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-07-22 00:41:50,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-22 00:41:50,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:41:50,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:41:50,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 00:41:50,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:41:50,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:41:50,999 INFO L85 PathProgramCache]: Analyzing trace with hash 502083121, now seen corresponding path program 1 times [2022-07-22 00:41:50,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:41:50,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200262723] [2022-07-22 00:41:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:41:50,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:41:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:41:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:51,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:41:51,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200262723] [2022-07-22 00:41:51,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200262723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:41:51,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:41:51,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 00:41:51,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967361950] [2022-07-22 00:41:51,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:41:51,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 00:41:51,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:41:51,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 00:41:51,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 00:41:51,045 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:41:51,107 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2022-07-22 00:41:51,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 00:41:51,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-22 00:41:51,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:41:51,110 INFO L225 Difference]: With dead ends: 31 [2022-07-22 00:41:51,111 INFO L226 Difference]: Without dead ends: 30 [2022-07-22 00:41:51,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 00:41:51,112 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:41:51,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 37 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:41:51,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-22 00:41:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-07-22 00:41:51,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-07-22 00:41:51,117 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 15 [2022-07-22 00:41:51,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:41:51,117 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-07-22 00:41:51,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:51,118 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-07-22 00:41:51,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-22 00:41:51,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:41:51,118 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:41:51,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 00:41:51,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:41:51,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:41:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1165045203, now seen corresponding path program 1 times [2022-07-22 00:41:51,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:41:51,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352967665] [2022-07-22 00:41:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:41:51,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:41:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:41:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:51,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:41:51,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352967665] [2022-07-22 00:41:51,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352967665] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:41:51,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860844340] [2022-07-22 00:41:51,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:41:51,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:41:51,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:41:51,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:41:51,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 00:41:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:41:51,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 00:41:51,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:41:51,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:51,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:41:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:51,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860844340] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:41:51,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:41:51,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-07-22 00:41:51,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119294606] [2022-07-22 00:41:51,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:41:51,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 00:41:51,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:41:51,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 00:41:51,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-07-22 00:41:51,377 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:51,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:41:51,510 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2022-07-22 00:41:51,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 00:41:51,510 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-22 00:41:51,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:41:51,512 INFO L225 Difference]: With dead ends: 50 [2022-07-22 00:41:51,513 INFO L226 Difference]: Without dead ends: 48 [2022-07-22 00:41:51,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-07-22 00:41:51,514 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:41:51,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 53 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:41:51,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-22 00:41:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-07-22 00:41:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2022-07-22 00:41:51,532 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 21 [2022-07-22 00:41:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:41:51,533 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2022-07-22 00:41:51,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 10 states have internal predecessors, (34), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2022-07-22 00:41:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-22 00:41:51,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:41:51,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-07-22 00:41:51,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 00:41:51,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:41:51,752 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:41:51,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:41:51,752 INFO L85 PathProgramCache]: Analyzing trace with hash -924042987, now seen corresponding path program 1 times [2022-07-22 00:41:51,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:41:51,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061258362] [2022-07-22 00:41:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:41:51,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:41:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:41:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:51,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:41:51,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061258362] [2022-07-22 00:41:51,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061258362] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:41:51,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445809416] [2022-07-22 00:41:51,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:41:51,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:41:51,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:41:51,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:41:51,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 00:41:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:41:51,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-22 00:41:51,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:41:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:52,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:41:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:52,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445809416] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:41:52,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:41:52,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-07-22 00:41:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973044419] [2022-07-22 00:41:52,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:41:52,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-22 00:41:52,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:41:52,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-22 00:41:52,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2022-07-22 00:41:52,232 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 28 states, 25 states have (on average 2.56) internal successors, (64), 16 states have internal predecessors, (64), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:52,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:41:52,526 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-07-22 00:41:52,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 00:41:52,527 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.56) internal successors, (64), 16 states have internal predecessors, (64), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-07-22 00:41:52,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:41:52,527 INFO L225 Difference]: With dead ends: 92 [2022-07-22 00:41:52,528 INFO L226 Difference]: Without dead ends: 90 [2022-07-22 00:41:52,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2022-07-22 00:41:52,529 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 121 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:41:52,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 76 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:41:52,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-22 00:41:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-07-22 00:41:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:52,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2022-07-22 00:41:52,537 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 39 [2022-07-22 00:41:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:41:52,539 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2022-07-22 00:41:52,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.56) internal successors, (64), 16 states have internal predecessors, (64), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2022-07-22 00:41:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-22 00:41:52,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:41:52,544 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2022-07-22 00:41:52,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 00:41:52,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-22 00:41:52,760 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:41:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:41:52,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1136694515, now seen corresponding path program 2 times [2022-07-22 00:41:52,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:41:52,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711944380] [2022-07-22 00:41:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:41:52,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:41:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:41:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:53,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:41:53,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711944380] [2022-07-22 00:41:53,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711944380] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:41:53,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773896232] [2022-07-22 00:41:53,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 00:41:53,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:41:53,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:41:53,111 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:41:53,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 00:41:53,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 00:41:53,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:41:53,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-22 00:41:53,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:41:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:53,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:41:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:53,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773896232] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:41:53,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:41:53,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2022-07-22 00:41:53,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461655762] [2022-07-22 00:41:53,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:41:53,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-22 00:41:53,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:41:53,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-22 00:41:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2022-07-22 00:41:53,807 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 56 states, 53 states have (on average 2.5283018867924527) internal successors, (134), 30 states have internal predecessors, (134), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:41:54,385 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2022-07-22 00:41:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-22 00:41:54,386 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.5283018867924527) internal successors, (134), 30 states have internal predecessors, (134), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-07-22 00:41:54,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:41:54,387 INFO L225 Difference]: With dead ends: 170 [2022-07-22 00:41:54,387 INFO L226 Difference]: Without dead ends: 168 [2022-07-22 00:41:54,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=970, Invalid=5510, Unknown=0, NotChecked=0, Total=6480 [2022-07-22 00:41:54,389 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 313 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 00:41:54,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 73 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 00:41:54,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-22 00:41:54,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2022-07-22 00:41:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 139 states have internal predecessors, (140), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:54,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2022-07-22 00:41:54,410 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 81 [2022-07-22 00:41:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:41:54,410 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2022-07-22 00:41:54,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.5283018867924527) internal successors, (134), 30 states have internal predecessors, (134), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2022-07-22 00:41:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 00:41:54,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:41:54,412 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1] [2022-07-22 00:41:54,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 00:41:54,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:41:54,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:41:54,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:41:54,628 INFO L85 PathProgramCache]: Analyzing trace with hash -40232055, now seen corresponding path program 2 times [2022-07-22 00:41:54,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:41:54,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661034674] [2022-07-22 00:41:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:41:54,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:41:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:41:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:55,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:41:55,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661034674] [2022-07-22 00:41:55,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661034674] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:41:55,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940118481] [2022-07-22 00:41:55,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 00:41:55,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:41:55,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:41:55,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:41:55,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 00:41:55,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 00:41:55,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:41:55,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-22 00:41:55,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:41:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:55,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:41:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:41:57,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940118481] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:41:57,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:41:57,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2022-07-22 00:41:57,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031144510] [2022-07-22 00:41:57,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:41:57,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-07-22 00:41:57,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:41:57,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-07-22 00:41:57,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2022-07-22 00:41:57,245 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand has 108 states, 105 states have (on average 2.5142857142857142) internal successors, (264), 56 states have internal predecessors, (264), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:41:58,859 INFO L93 Difference]: Finished difference Result 332 states and 357 transitions. [2022-07-22 00:41:58,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-07-22 00:41:58,860 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 105 states have (on average 2.5142857142857142) internal successors, (264), 56 states have internal predecessors, (264), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-07-22 00:41:58,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:41:58,861 INFO L225 Difference]: With dead ends: 332 [2022-07-22 00:41:58,861 INFO L226 Difference]: Without dead ends: 330 [2022-07-22 00:41:58,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2022-07-22 00:41:58,866 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 771 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 00:41:58,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 87 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 00:41:58,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-07-22 00:41:58,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2022-07-22 00:41:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 273 states have (on average 1.0073260073260073) internal successors, (275), 274 states have internal predecessors, (275), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2022-07-22 00:41:58,883 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 159 [2022-07-22 00:41:58,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:41:58,883 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2022-07-22 00:41:58,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 105 states have (on average 2.5142857142857142) internal successors, (264), 56 states have internal predecessors, (264), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:41:58,884 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2022-07-22 00:41:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-07-22 00:41:58,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:41:58,887 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1] [2022-07-22 00:41:58,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 00:41:59,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:41:59,106 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:41:59,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:41:59,107 INFO L85 PathProgramCache]: Analyzing trace with hash 339345909, now seen corresponding path program 3 times [2022-07-22 00:41:59,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:41:59,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760934491] [2022-07-22 00:41:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:41:59,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:41:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:01,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:01,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760934491] [2022-07-22 00:42:01,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760934491] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:01,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065491256] [2022-07-22 00:42:01,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 00:42:01,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:01,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:01,542 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:42:01,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 00:42:01,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2022-07-22 00:42:01,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:42:01,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 108 conjunts are in the unsatisfiable core [2022-07-22 00:42:01,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:01,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:42:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4030 backedges. 0 proven. 4030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:07,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065491256] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:42:07,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:42:07,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 215 [2022-07-22 00:42:07,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105400539] [2022-07-22 00:42:07,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:42:07,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2022-07-22 00:42:07,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:07,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2022-07-22 00:42:07,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2022-07-22 00:42:07,444 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand has 216 states, 213 states have (on average 2.507042253521127) internal successors, (534), 110 states have internal predecessors, (534), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:42:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:42:12,926 INFO L93 Difference]: Finished difference Result 650 states and 701 transitions. [2022-07-22 00:42:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-07-22 00:42:12,926 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 213 states have (on average 2.507042253521127) internal successors, (534), 110 states have internal predecessors, (534), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2022-07-22 00:42:12,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:42:12,929 INFO L225 Difference]: With dead ends: 650 [2022-07-22 00:42:12,929 INFO L226 Difference]: Without dead ends: 648 [2022-07-22 00:42:12,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 533 SyntacticMatches, 1 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32497 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2022-07-22 00:42:12,935 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1863 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 00:42:12,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 109 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 00:42:12,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-07-22 00:42:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 647. [2022-07-22 00:42:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 538 states have (on average 1.003717472118959) internal successors, (540), 539 states have internal predecessors, (540), 107 states have call successors, (107), 107 states have call predecessors, (107), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:42:12,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 647 transitions. [2022-07-22 00:42:12,961 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 647 transitions. Word has length 321 [2022-07-22 00:42:12,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:42:12,961 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 647 transitions. [2022-07-22 00:42:12,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 213 states have (on average 2.507042253521127) internal successors, (534), 110 states have internal predecessors, (534), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:42:12,962 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 647 transitions. [2022-07-22 00:42:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2022-07-22 00:42:12,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:42:12,971 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 53, 53, 52, 52, 1, 1, 1, 1, 1] [2022-07-22 00:42:12,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 00:42:13,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:13,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:42:13,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:42:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1573793113, now seen corresponding path program 3 times [2022-07-22 00:42:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:42:13,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656433416] [2022-07-22 00:42:13,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:42:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:42:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:42:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16484 backedges. 0 proven. 16484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:21,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:42:21,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656433416] [2022-07-22 00:42:21,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656433416] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:42:21,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516595600] [2022-07-22 00:42:21,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 00:42:21,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:42:21,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:42:21,838 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:42:21,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 00:42:22,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2022-07-22 00:42:22,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:42:22,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 214 conjunts are in the unsatisfiable core [2022-07-22 00:42:22,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:42:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 16484 backedges. 0 proven. 16484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:22,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:42:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16484 backedges. 0 proven. 16484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:42:42,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516595600] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:42:42,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:42:42,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214, 214] total 427 [2022-07-22 00:42:42,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088893549] [2022-07-22 00:42:42,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:42:42,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2022-07-22 00:42:42,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:42:42,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2022-07-22 00:42:42,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23114, Invalid=159642, Unknown=0, NotChecked=0, Total=182756 [2022-07-22 00:42:42,641 INFO L87 Difference]: Start difference. First operand 647 states and 647 transitions. Second operand has 428 states, 425 states have (on average 2.503529411764706) internal successors, (1064), 216 states have internal predecessors, (1064), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:43:04,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:43:04,203 INFO L93 Difference]: Finished difference Result 1292 states and 1397 transitions. [2022-07-22 00:43:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 428 states. [2022-07-22 00:43:04,205 INFO L78 Accepts]: Start accepts. Automaton has has 428 states, 425 states have (on average 2.503529411764706) internal successors, (1064), 216 states have internal predecessors, (1064), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 639 [2022-07-22 00:43:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:43:04,209 INFO L225 Difference]: With dead ends: 1292 [2022-07-22 00:43:04,209 INFO L226 Difference]: Without dead ends: 1290 [2022-07-22 00:43:04,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1702 GetRequests, 1063 SyntacticMatches, 1 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132720 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=57352, Invalid=351608, Unknown=0, NotChecked=0, Total=408960 [2022-07-22 00:43:04,230 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5124 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5124 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 00:43:04,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5124 Valid, 105 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 00:43:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-07-22 00:43:04,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1289. [2022-07-22 00:43:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1073 states have (on average 1.0018639328984156) internal successors, (1075), 1074 states have internal predecessors, (1075), 214 states have call successors, (214), 214 states have call predecessors, (214), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:43:04,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1289 transitions. [2022-07-22 00:43:04,311 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1289 transitions. Word has length 639 [2022-07-22 00:43:04,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:43:04,312 INFO L495 AbstractCegarLoop]: Abstraction has 1289 states and 1289 transitions. [2022-07-22 00:43:04,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 428 states, 425 states have (on average 2.503529411764706) internal successors, (1064), 216 states have internal predecessors, (1064), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:43:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1289 transitions. [2022-07-22 00:43:04,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1282 [2022-07-22 00:43:04,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:43:04,324 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 107, 106, 106, 106, 106, 106, 106, 106, 106, 1, 1, 1, 1, 1] [2022-07-22 00:43:04,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 00:43:04,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:43:04,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:43:04,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:43:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1783726699, now seen corresponding path program 4 times [2022-07-22 00:43:04,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:43:04,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317364426] [2022-07-22 00:43:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:43:04,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:43:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:43:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 67310 backedges. 0 proven. 67310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:43:37,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:43:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317364426] [2022-07-22 00:43:37,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317364426] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:43:37,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547793056] [2022-07-22 00:43:37,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 00:43:37,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:43:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:43:37,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:43:37,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 00:43:38,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 00:43:38,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:43:38,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 428 conjunts are in the unsatisfiable core [2022-07-22 00:43:38,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:43:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 67310 backedges. 0 proven. 67310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:43:39,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:44:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 67310 backedges. 0 proven. 67310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:44:57,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547793056] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:44:57,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:44:57,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [428, 428, 428] total 855 [2022-07-22 00:44:57,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434200115] [2022-07-22 00:44:57,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:44:57,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 856 states [2022-07-22 00:44:57,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:44:57,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 856 interpolants. [2022-07-22 00:44:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92024, Invalid=639856, Unknown=0, NotChecked=0, Total=731880 [2022-07-22 00:44:57,214 INFO L87 Difference]: Start difference. First operand 1289 states and 1289 transitions. Second operand has 856 states, 853 states have (on average 2.5017584994138335) internal successors, (2134), 430 states have internal predecessors, (2134), 426 states have call successors, (426), 426 states have call predecessors, (426), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)