./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i --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/loop-zilu/benchmark36_conjunctive.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa1583b531c18e8d25726690525e5ca2db800c1fca35b7cfde3a7fa11382718a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 00:51:37,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 00:51:37,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 00:51:37,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 00:51:37,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 00:51:37,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 00:51:37,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 00:51:37,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 00:51:37,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 00:51:37,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 00:51:37,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 00:51:37,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 00:51:37,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 00:51:37,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 00:51:37,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 00:51:37,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 00:51:37,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 00:51:37,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 00:51:37,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 00:51:37,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 00:51:37,765 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 00:51:37,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 00:51:37,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 00:51:37,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 00:51:37,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 00:51:37,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 00:51:37,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 00:51:37,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 00:51:37,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 00:51:37,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 00:51:37,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 00:51:37,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 00:51:37,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 00:51:37,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 00:51:37,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 00:51:37,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 00:51:37,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 00:51:37,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 00:51:37,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 00:51:37,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 00:51:37,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 00:51:37,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 00:51:37,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-22 00:51:37,825 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 00:51:37,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 00:51:37,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 00:51:37,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 00:51:37,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 00:51:37,826 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 00:51:37,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 00:51:37,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 00:51:37,828 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 00:51:37,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 00:51:37,829 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 00:51:37,829 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 00:51:37,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 00:51:37,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 00:51:37,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 00:51:37,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 00:51:37,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 00:51:37,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 00:51:37,830 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-22 00:51:37,830 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 00:51:37,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 00:51:37,831 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 00:51:37,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 00:51:37,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 00:51:37,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 00:51:37,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 00:51:37,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:51:37,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 00:51:37,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 00:51:37,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 00:51:37,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 00:51:37,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 00:51:37,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 00:51:37,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa1583b531c18e8d25726690525e5ca2db800c1fca35b7cfde3a7fa11382718a [2022-07-22 00:51:38,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 00:51:38,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 00:51:38,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 00:51:38,166 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 00:51:38,167 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 00:51:38,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i [2022-07-22 00:51:38,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ddfa9bc9/ba435f712cca4612adfddb32ad3faf96/FLAG3e6d3aa0c [2022-07-22 00:51:38,656 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 00:51:38,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i [2022-07-22 00:51:38,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ddfa9bc9/ba435f712cca4612adfddb32ad3faf96/FLAG3e6d3aa0c [2022-07-22 00:51:39,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ddfa9bc9/ba435f712cca4612adfddb32ad3faf96 [2022-07-22 00:51:39,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 00:51:39,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 00:51:39,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 00:51:39,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 00:51:39,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 00:51:39,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da9bba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39, skipping insertion in model container [2022-07-22 00:51:39,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 00:51:39,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 00:51:39,190 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i[873,886] [2022-07-22 00:51:39,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:51:39,203 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 00:51:39,250 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark36_conjunctive.i[873,886] [2022-07-22 00:51:39,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 00:51:39,267 INFO L208 MainTranslator]: Completed translation [2022-07-22 00:51:39,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39 WrapperNode [2022-07-22 00:51:39,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 00:51:39,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 00:51:39,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 00:51:39,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 00:51:39,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,294 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2022-07-22 00:51:39,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 00:51:39,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 00:51:39,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 00:51:39,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 00:51:39,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 00:51:39,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 00:51:39,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 00:51:39,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 00:51:39,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39" (1/1) ... [2022-07-22 00:51:39,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 00:51:39,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:51:39,356 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 00:51:39,370 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 00:51:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 00:51:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 00:51:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 00:51:39,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 00:51:39,451 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 00:51:39,452 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 00:51:39,579 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 00:51:39,583 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 00:51:39,585 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 00:51:39,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:51:39 BoogieIcfgContainer [2022-07-22 00:51:39,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 00:51:39,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 00:51:39,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 00:51:39,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 00:51:39,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:51:39" (1/3) ... [2022-07-22 00:51:39,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac4fa78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:51:39, skipping insertion in model container [2022-07-22 00:51:39,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:51:39" (2/3) ... [2022-07-22 00:51:39,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac4fa78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:51:39, skipping insertion in model container [2022-07-22 00:51:39,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:51:39" (3/3) ... [2022-07-22 00:51:39,594 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark36_conjunctive.i [2022-07-22 00:51:39,606 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 00:51:39,606 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-22 00:51:39,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 00:51:39,664 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@2d4b8110, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7fa34856 [2022-07-22 00:51:39,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 00:51:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:39,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-22 00:51:39,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:39,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-22 00:51:39,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:39,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2022-07-22 00:51:39,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:39,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066093967] [2022-07-22 00:51:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:39,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:39,847 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 00:51:39,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:39,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066093967] [2022-07-22 00:51:39,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066093967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:51:39,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:51:39,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 00:51:39,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888968791] [2022-07-22 00:51:39,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:51:39,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 00:51:39,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:39,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 00:51:39,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 00:51:39,923 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:39,983 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-07-22 00:51:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 00:51:39,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-22 00:51:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:39,992 INFO L225 Difference]: With dead ends: 35 [2022-07-22 00:51:39,992 INFO L226 Difference]: Without dead ends: 16 [2022-07-22 00:51:39,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:51:40,001 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:40,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 43 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:51:40,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-22 00:51:40,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2022-07-22 00:51:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-07-22 00:51:40,030 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2022-07-22 00:51:40,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:40,030 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-07-22 00:51:40,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,032 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-07-22 00:51:40,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-22 00:51:40,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:40,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-22 00:51:40,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 00:51:40,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:40,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:40,035 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2022-07-22 00:51:40,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:40,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457621266] [2022-07-22 00:51:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:40,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:40,081 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 00:51:40,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:40,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457621266] [2022-07-22 00:51:40,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457621266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:51:40,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:51:40,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 00:51:40,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534117430] [2022-07-22 00:51:40,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:51:40,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 00:51:40,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:40,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 00:51:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 00:51:40,091 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:40,114 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-07-22 00:51:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 00:51:40,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-22 00:51:40,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:40,115 INFO L225 Difference]: With dead ends: 14 [2022-07-22 00:51:40,115 INFO L226 Difference]: Without dead ends: 13 [2022-07-22 00:51:40,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:51:40,117 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:40,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 12 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:51:40,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-22 00:51:40,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-22 00:51:40,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-07-22 00:51:40,121 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2022-07-22 00:51:40,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:40,121 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-07-22 00:51:40,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,122 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-07-22 00:51:40,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 00:51:40,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:40,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:51:40,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 00:51:40,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:40,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2022-07-22 00:51:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:40,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716705716] [2022-07-22 00:51:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:40,174 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 00:51:40,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:40,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716705716] [2022-07-22 00:51:40,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716705716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:51:40,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:51:40,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 00:51:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923142753] [2022-07-22 00:51:40,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:51:40,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 00:51:40,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:40,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 00:51:40,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 00:51:40,178 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:40,217 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-07-22 00:51:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 00:51:40,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-22 00:51:40,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:40,218 INFO L225 Difference]: With dead ends: 18 [2022-07-22 00:51:40,219 INFO L226 Difference]: Without dead ends: 17 [2022-07-22 00:51:40,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:51:40,221 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:40,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:51:40,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-22 00:51:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-07-22 00:51:40,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-07-22 00:51:40,231 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2022-07-22 00:51:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:40,232 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-07-22 00:51:40,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,232 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-07-22 00:51:40,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 00:51:40,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:40,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:51:40,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 00:51:40,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:40,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:40,235 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2022-07-22 00:51:40,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:40,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629809211] [2022-07-22 00:51:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:40,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:40,283 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 00:51:40,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:40,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629809211] [2022-07-22 00:51:40,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629809211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 00:51:40,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 00:51:40,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 00:51:40,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99601613] [2022-07-22 00:51:40,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 00:51:40,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 00:51:40,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:40,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 00:51:40,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 00:51:40,286 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:40,301 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-07-22 00:51:40,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 00:51:40,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-22 00:51:40,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:40,302 INFO L225 Difference]: With dead ends: 15 [2022-07-22 00:51:40,302 INFO L226 Difference]: Without dead ends: 14 [2022-07-22 00:51:40,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 00:51:40,304 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:40,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:51:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-22 00:51:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-22 00:51:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-07-22 00:51:40,308 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2022-07-22 00:51:40,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:40,308 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-07-22 00:51:40,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,309 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-07-22 00:51:40,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-22 00:51:40,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:40,310 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 00:51:40,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 00:51:40,310 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:40,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:40,311 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2022-07-22 00:51:40,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:40,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714776985] [2022-07-22 00:51:40,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:40,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:40,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:40,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714776985] [2022-07-22 00:51:40,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714776985] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:51:40,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987042247] [2022-07-22 00:51:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:40,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:51:40,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:51:40,360 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 00:51:40,386 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 00:51:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:40,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 00:51:40,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:51:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:40,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:51:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:40,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987042247] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:51:40,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:51:40,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-07-22 00:51:40,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839236615] [2022-07-22 00:51:40,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:51:40,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 00:51:40,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:40,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 00:51:40,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 00:51:40,601 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:40,683 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-07-22 00:51:40,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 00:51:40,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-22 00:51:40,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:40,686 INFO L225 Difference]: With dead ends: 31 [2022-07-22 00:51:40,687 INFO L226 Difference]: Without dead ends: 30 [2022-07-22 00:51:40,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-22 00:51:40,688 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:40,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 36 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:51:40,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-22 00:51:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-07-22 00:51:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-07-22 00:51:40,700 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2022-07-22 00:51:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:40,701 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-07-22 00:51:40,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:40,702 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-07-22 00:51:40,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-22 00:51:40,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:40,702 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-22 00:51:40,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 00:51:40,915 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 00:51:40,916 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:40,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:40,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2022-07-22 00:51:40,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:40,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962955044] [2022-07-22 00:51:40,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:40,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:41,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:41,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962955044] [2022-07-22 00:51:41,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962955044] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:51:41,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287920168] [2022-07-22 00:51:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:41,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:51:41,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:51:41,008 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 00:51:41,009 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 00:51:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:41,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 00:51:41,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:51:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:41,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:51:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:41,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287920168] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:51:41,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:51:41,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-07-22 00:51:41,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400405378] [2022-07-22 00:51:41,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:51:41,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 00:51:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:41,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 00:51:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 00:51:41,126 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:41,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:41,187 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-07-22 00:51:41,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 00:51:41,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-22 00:51:41,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:41,189 INFO L225 Difference]: With dead ends: 31 [2022-07-22 00:51:41,189 INFO L226 Difference]: Without dead ends: 30 [2022-07-22 00:51:41,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-22 00:51:41,196 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:41,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 40 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:51:41,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-22 00:51:41,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-07-22 00:51:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2022-07-22 00:51:41,202 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 12 [2022-07-22 00:51:41,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:41,202 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2022-07-22 00:51:41,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2022-07-22 00:51:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-22 00:51:41,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:41,203 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2022-07-22 00:51:41,223 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 00:51:41,415 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 00:51:41,416 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:41,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:41,416 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 2 times [2022-07-22 00:51:41,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:41,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176282777] [2022-07-22 00:51:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:41,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:41,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:41,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176282777] [2022-07-22 00:51:41,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176282777] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:51:41,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066495614] [2022-07-22 00:51:41,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 00:51:41,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:51:41,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:51:41,526 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 00:51:41,535 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 00:51:41,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 00:51:41,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:51:41,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 00:51:41,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:51:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:41,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:51:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:41,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066495614] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:51:41,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:51:41,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-07-22 00:51:41,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390097410] [2022-07-22 00:51:41,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:51:41,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 00:51:41,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:41,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 00:51:41,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-22 00:51:41,775 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:41,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:41,968 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2022-07-22 00:51:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 00:51:41,969 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-22 00:51:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:41,971 INFO L225 Difference]: With dead ends: 64 [2022-07-22 00:51:41,971 INFO L226 Difference]: Without dead ends: 63 [2022-07-22 00:51:41,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2022-07-22 00:51:41,973 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:41,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 54 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:51:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-22 00:51:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2022-07-22 00:51:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 56 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2022-07-22 00:51:41,995 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 25 [2022-07-22 00:51:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:41,995 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2022-07-22 00:51:41,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2022-07-22 00:51:41,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-22 00:51:41,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:41,996 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-07-22 00:51:42,014 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 00:51:42,203 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 00:51:42,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:42,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:42,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1410159193, now seen corresponding path program 2 times [2022-07-22 00:51:42,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:42,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840351150] [2022-07-22 00:51:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:42,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:42,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:42,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840351150] [2022-07-22 00:51:42,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840351150] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:51:42,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942183118] [2022-07-22 00:51:42,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 00:51:42,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:51:42,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:51:42,316 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 00:51:42,322 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 00:51:42,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 00:51:42,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:51:42,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 00:51:42,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:51:42,411 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:42,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:51:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:42,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942183118] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:51:42,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:51:42,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2022-07-22 00:51:42,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273754267] [2022-07-22 00:51:42,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:51:42,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 00:51:42,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:42,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 00:51:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-22 00:51:42,546 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:42,702 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2022-07-22 00:51:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 00:51:42,703 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-22 00:51:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:42,704 INFO L225 Difference]: With dead ends: 61 [2022-07-22 00:51:42,704 INFO L226 Difference]: Without dead ends: 60 [2022-07-22 00:51:42,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2022-07-22 00:51:42,705 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 53 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:42,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 50 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 00:51:42,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-22 00:51:42,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-07-22 00:51:42,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-07-22 00:51:42,711 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 27 [2022-07-22 00:51:42,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:42,712 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-07-22 00:51:42,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-07-22 00:51:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 00:51:42,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:42,713 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2022-07-22 00:51:42,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 00:51:42,931 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 00:51:42,931 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:42,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 3 times [2022-07-22 00:51:42,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:42,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45555067] [2022-07-22 00:51:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:43,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:43,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45555067] [2022-07-22 00:51:43,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45555067] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:51:43,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406989899] [2022-07-22 00:51:43,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 00:51:43,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:51:43,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:51:43,236 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 00:51:43,261 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 00:51:43,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-22 00:51:43,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:51:43,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 00:51:43,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:51:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:43,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:51:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:43,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406989899] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:51:43,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:51:43,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2022-07-22 00:51:43,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252469147] [2022-07-22 00:51:43,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:51:43,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-22 00:51:43,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:43,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-22 00:51:43,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2022-07-22 00:51:43,890 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 46 states, 45 states have (on average 2.4) internal successors, (108), 46 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:44,343 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2022-07-22 00:51:44,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-22 00:51:44,344 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.4) internal successors, (108), 46 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-07-22 00:51:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:44,345 INFO L225 Difference]: With dead ends: 130 [2022-07-22 00:51:44,345 INFO L226 Difference]: Without dead ends: 129 [2022-07-22 00:51:44,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2022-07-22 00:51:44,347 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 231 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:44,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 85 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:51:44,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-22 00:51:44,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2022-07-22 00:51:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 116 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:44,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2022-07-22 00:51:44,358 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 55 [2022-07-22 00:51:44,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:44,358 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2022-07-22 00:51:44,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.4) internal successors, (108), 46 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:44,359 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2022-07-22 00:51:44,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 00:51:44,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:44,360 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2022-07-22 00:51:44,382 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 00:51:44,575 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 00:51:44,576 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:44,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1980812327, now seen corresponding path program 3 times [2022-07-22 00:51:44,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:44,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153337416] [2022-07-22 00:51:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:44,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:44,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:44,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153337416] [2022-07-22 00:51:44,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153337416] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:51:44,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384308516] [2022-07-22 00:51:44,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 00:51:44,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:51:44,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:51:44,836 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 00:51:44,859 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 00:51:44,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-22 00:51:44,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:51:44,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 00:51:44,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:51:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:44,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:51:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:45,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384308516] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:51:45,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:51:45,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2022-07-22 00:51:45,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617411009] [2022-07-22 00:51:45,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:51:45,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-22 00:51:45,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-22 00:51:45,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2022-07-22 00:51:45,448 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:45,874 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2022-07-22 00:51:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-22 00:51:45,875 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-22 00:51:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:45,876 INFO L225 Difference]: With dead ends: 121 [2022-07-22 00:51:45,876 INFO L226 Difference]: Without dead ends: 120 [2022-07-22 00:51:45,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2022-07-22 00:51:45,878 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 128 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:45,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 94 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:51:45,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-22 00:51:45,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2022-07-22 00:51:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:45,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2022-07-22 00:51:45,887 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 57 [2022-07-22 00:51:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:45,887 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2022-07-22 00:51:45,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2022-07-22 00:51:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-22 00:51:45,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:45,889 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2022-07-22 00:51:45,911 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 00:51:46,107 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 00:51:46,108 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:46,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:46,108 INFO L85 PathProgramCache]: Analyzing trace with hash 708663333, now seen corresponding path program 4 times [2022-07-22 00:51:46,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:46,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980857390] [2022-07-22 00:51:46,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:46,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:46,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:46,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980857390] [2022-07-22 00:51:46,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980857390] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:51:46,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645391632] [2022-07-22 00:51:46,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 00:51:46,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:51:46,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:51:46,944 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 00:51:46,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 00:51:47,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 00:51:47,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:51:47,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-22 00:51:47,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:51:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:47,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:51:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:48,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645391632] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:51:48,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:51:48,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2022-07-22 00:51:48,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510034559] [2022-07-22 00:51:48,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:51:48,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-07-22 00:51:48,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:48,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-07-22 00:51:48,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2022-07-22 00:51:48,759 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 94 states, 93 states have (on average 2.4516129032258065) internal successors, (228), 94 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:50,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:50,076 INFO L93 Difference]: Finished difference Result 262 states and 285 transitions. [2022-07-22 00:51:50,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-07-22 00:51:50,077 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4516129032258065) internal successors, (228), 94 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-07-22 00:51:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:50,079 INFO L225 Difference]: With dead ends: 262 [2022-07-22 00:51:50,079 INFO L226 Difference]: Without dead ends: 261 [2022-07-22 00:51:50,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4006 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5544, Invalid=13916, Unknown=0, NotChecked=0, Total=19460 [2022-07-22 00:51:50,083 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 519 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:50,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 156 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 00:51:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-07-22 00:51:50,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 237. [2022-07-22 00:51:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 235 states have (on average 1.1063829787234043) internal successors, (260), 236 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 260 transitions. [2022-07-22 00:51:50,096 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 260 transitions. Word has length 115 [2022-07-22 00:51:50,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:50,096 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 260 transitions. [2022-07-22 00:51:50,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4516129032258065) internal successors, (228), 94 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 260 transitions. [2022-07-22 00:51:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 00:51:50,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:50,098 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2022-07-22 00:51:50,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 00:51:50,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:51:50,319 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:50,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:50,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1874335449, now seen corresponding path program 4 times [2022-07-22 00:51:50,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:50,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405243438] [2022-07-22 00:51:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:50,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:51,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:51,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405243438] [2022-07-22 00:51:51,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405243438] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:51:51,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498581527] [2022-07-22 00:51:51,014 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 00:51:51,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:51:51,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:51:51,018 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:51:51,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 00:51:51,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 00:51:51,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:51:51,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-22 00:51:51,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:51:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:51,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:51:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:52,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498581527] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:51:52,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:51:52,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2022-07-22 00:51:52,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251449520] [2022-07-22 00:51:52,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:51:52,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-07-22 00:51:52,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:51:52,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-07-22 00:51:52,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2022-07-22 00:51:52,710 INFO L87 Difference]: Start difference. First operand 237 states and 260 transitions. Second operand has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:53,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:51:53,893 INFO L93 Difference]: Finished difference Result 241 states and 264 transitions. [2022-07-22 00:51:53,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-07-22 00:51:53,893 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-22 00:51:53,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:51:53,895 INFO L225 Difference]: With dead ends: 241 [2022-07-22 00:51:53,895 INFO L226 Difference]: Without dead ends: 240 [2022-07-22 00:51:53,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4006 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5544, Invalid=13916, Unknown=0, NotChecked=0, Total=19460 [2022-07-22 00:51:53,898 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 345 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 00:51:53,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 141 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 00:51:53,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-22 00:51:53,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2022-07-22 00:51:53,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:53,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2022-07-22 00:51:53,911 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 117 [2022-07-22 00:51:53,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:51:53,911 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2022-07-22 00:51:53,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:51:53,912 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2022-07-22 00:51:53,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-22 00:51:53,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:51:53,914 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2022-07-22 00:51:53,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 00:51:54,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 00:51:54,138 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:51:54,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:51:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash -383938011, now seen corresponding path program 5 times [2022-07-22 00:51:54,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:51:54,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007938068] [2022-07-22 00:51:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:51:54,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:51:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:51:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:56,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:51:56,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007938068] [2022-07-22 00:51:56,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007938068] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:51:56,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426909391] [2022-07-22 00:51:56,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 00:51:56,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:51:56,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:51:56,516 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:51:56,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 00:51:56,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-07-22 00:51:56,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:51:56,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-22 00:51:56,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:51:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:51:57,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:52:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:52:02,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426909391] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:52:02,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:52:02,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2022-07-22 00:52:02,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219645491] [2022-07-22 00:52:02,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:52:02,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2022-07-22 00:52:02,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:52:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2022-07-22 00:52:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2022-07-22 00:52:02,634 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand has 190 states, 189 states have (on average 2.4761904761904763) internal successors, (468), 190 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:52:07,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:52:07,357 INFO L93 Difference]: Finished difference Result 526 states and 573 transitions. [2022-07-22 00:52:07,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-07-22 00:52:07,358 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 2.4761904761904763) internal successors, (468), 190 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2022-07-22 00:52:07,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:52:07,360 INFO L225 Difference]: With dead ends: 526 [2022-07-22 00:52:07,360 INFO L226 Difference]: Without dead ends: 525 [2022-07-22 00:52:07,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17206 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=22608, Invalid=57764, Unknown=0, NotChecked=0, Total=80372 [2022-07-22 00:52:07,367 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1188 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 00:52:07,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 274 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 00:52:07,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-07-22 00:52:07,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 477. [2022-07-22 00:52:07,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.1031578947368421) internal successors, (524), 476 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:52:07,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 524 transitions. [2022-07-22 00:52:07,382 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 524 transitions. Word has length 235 [2022-07-22 00:52:07,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:52:07,383 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 524 transitions. [2022-07-22 00:52:07,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 2.4761904761904763) internal successors, (468), 190 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:52:07,384 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 524 transitions. [2022-07-22 00:52:07,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-22 00:52:07,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:52:07,387 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2022-07-22 00:52:07,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-22 00:52:07,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 00:52:07,601 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:52:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:52:07,602 INFO L85 PathProgramCache]: Analyzing trace with hash 402760487, now seen corresponding path program 5 times [2022-07-22 00:52:07,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:52:07,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731719796] [2022-07-22 00:52:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:52:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:52:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:52:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:52:09,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:52:09,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731719796] [2022-07-22 00:52:09,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731719796] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:52:09,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119671356] [2022-07-22 00:52:09,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 00:52:09,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:52:09,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:52:09,928 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:52:09,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 00:52:10,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-07-22 00:52:10,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:52:10,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 95 conjunts are in the unsatisfiable core [2022-07-22 00:52:10,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:52:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:52:10,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:52:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:52:16,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119671356] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:52:16,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:52:16,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2022-07-22 00:52:16,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493812872] [2022-07-22 00:52:16,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:52:16,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2022-07-22 00:52:16,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:52:16,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2022-07-22 00:52:16,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2022-07-22 00:52:16,148 INFO L87 Difference]: Start difference. First operand 477 states and 524 transitions. Second operand has 190 states, 189 states have (on average 2.497354497354497) internal successors, (472), 190 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:52:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:52:20,766 INFO L93 Difference]: Finished difference Result 481 states and 528 transitions. [2022-07-22 00:52:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-07-22 00:52:20,767 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 2.497354497354497) internal successors, (472), 190 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2022-07-22 00:52:20,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:52:20,769 INFO L225 Difference]: With dead ends: 481 [2022-07-22 00:52:20,769 INFO L226 Difference]: Without dead ends: 480 [2022-07-22 00:52:20,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17206 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=22608, Invalid=57764, Unknown=0, NotChecked=0, Total=80372 [2022-07-22 00:52:20,774 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1107 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 00:52:20,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 243 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 00:52:20,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-07-22 00:52:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2022-07-22 00:52:20,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 1.0041928721174005) internal successors, (479), 478 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:52:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2022-07-22 00:52:20,787 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 237 [2022-07-22 00:52:20,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:52:20,787 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2022-07-22 00:52:20,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 2.497354497354497) internal successors, (472), 190 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:52:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2022-07-22 00:52:20,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-07-22 00:52:20,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:52:20,795 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2022-07-22 00:52:20,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 00:52:21,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 00:52:21,014 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:52:21,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:52:21,014 INFO L85 PathProgramCache]: Analyzing trace with hash 311166501, now seen corresponding path program 6 times [2022-07-22 00:52:21,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:52:21,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706282419] [2022-07-22 00:52:21,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:52:21,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:52:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:52:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:52:29,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:52:29,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706282419] [2022-07-22 00:52:29,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706282419] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:52:29,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773733787] [2022-07-22 00:52:29,847 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 00:52:29,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:52:29,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:52:29,849 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:52:29,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 00:52:30,711 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-07-22 00:52:30,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:52:30,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 192 conjunts are in the unsatisfiable core [2022-07-22 00:52:30,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:52:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:52:31,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:52:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:52:52,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773733787] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:52:52,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:52:52,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2022-07-22 00:52:52,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685987651] [2022-07-22 00:52:52,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:52:52,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2022-07-22 00:52:52,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:52:52,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2022-07-22 00:52:52,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2022-07-22 00:52:52,683 INFO L87 Difference]: Start difference. First operand 479 states and 479 transitions. Second operand has 382 states, 381 states have (on average 2.4881889763779528) internal successors, (948), 382 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:53:15,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:53:15,441 INFO L93 Difference]: Finished difference Result 1054 states and 1149 transitions. [2022-07-22 00:53:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2022-07-22 00:53:15,442 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 2.4881889763779528) internal successors, (948), 382 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 475 [2022-07-22 00:53:15,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:53:15,486 INFO L225 Difference]: With dead ends: 1054 [2022-07-22 00:53:15,486 INFO L226 Difference]: Without dead ends: 1053 [2022-07-22 00:53:15,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1329 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 570 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71254 ImplicationChecksByTransitivity, 43.8s TimeCoverageRelationStatistics Valid=91296, Invalid=235316, Unknown=0, NotChecked=0, Total=326612 [2022-07-22 00:53:15,500 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3212 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3212 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 00:53:15,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3212 Valid, 517 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 00:53:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-07-22 00:53:15,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 957. [2022-07-22 00:53:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 955 states have (on average 1.1015706806282723) internal successors, (1052), 956 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:53:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1052 transitions. [2022-07-22 00:53:15,524 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1052 transitions. Word has length 475 [2022-07-22 00:53:15,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:53:15,525 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1052 transitions. [2022-07-22 00:53:15,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 2.4881889763779528) internal successors, (948), 382 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:53:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1052 transitions. [2022-07-22 00:53:15,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-07-22 00:53:15,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:53:15,533 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1, 1] [2022-07-22 00:53:15,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 00:53:15,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 00:53:15,749 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:53:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:53:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1616701657, now seen corresponding path program 6 times [2022-07-22 00:53:15,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:53:15,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526327204] [2022-07-22 00:53:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:53:15,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:53:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:53:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:53:24,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:53:24,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526327204] [2022-07-22 00:53:24,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526327204] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:53:24,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887486561] [2022-07-22 00:53:24,613 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 00:53:24,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:53:24,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:53:24,614 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:53:24,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 00:53:25,427 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-07-22 00:53:25,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 00:53:25,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 191 conjunts are in the unsatisfiable core [2022-07-22 00:53:25,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:53:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:53:25,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 00:53:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:53:47,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887486561] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 00:53:47,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 00:53:47,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2022-07-22 00:53:47,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247039357] [2022-07-22 00:53:47,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 00:53:47,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2022-07-22 00:53:47,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 00:53:47,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2022-07-22 00:53:47,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2022-07-22 00:53:47,506 INFO L87 Difference]: Start difference. First operand 957 states and 1052 transitions. Second operand has 382 states, 381 states have (on average 2.4986876640419946) internal successors, (952), 382 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:54:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 00:54:10,089 INFO L93 Difference]: Finished difference Result 961 states and 1056 transitions. [2022-07-22 00:54:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2022-07-22 00:54:10,091 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 2.4986876640419946) internal successors, (952), 382 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 477 [2022-07-22 00:54:10,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 00:54:10,094 INFO L225 Difference]: With dead ends: 961 [2022-07-22 00:54:10,094 INFO L226 Difference]: Without dead ends: 960 [2022-07-22 00:54:10,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 570 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71254 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=91296, Invalid=235316, Unknown=0, NotChecked=0, Total=326612 [2022-07-22 00:54:10,109 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2161 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 00:54:10,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 432 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 00:54:10,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-07-22 00:54:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 959. [2022-07-22 00:54:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 957 states have (on average 1.0020898641588296) internal successors, (959), 958 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:54:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 959 transitions. [2022-07-22 00:54:10,131 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 959 transitions. Word has length 477 [2022-07-22 00:54:10,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 00:54:10,132 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 959 transitions. [2022-07-22 00:54:10,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 2.4986876640419946) internal successors, (952), 382 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 00:54:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 959 transitions. [2022-07-22 00:54:10,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2022-07-22 00:54:10,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 00:54:10,140 INFO L195 NwaCegarLoop]: trace histogram [191, 190, 190, 190, 190, 1, 1, 1, 1] [2022-07-22 00:54:10,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 00:54:10,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 00:54:10,359 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-22 00:54:10,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 00:54:10,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1814097445, now seen corresponding path program 7 times [2022-07-22 00:54:10,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 00:54:10,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096954367] [2022-07-22 00:54:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 00:54:10,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 00:54:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:54:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:54:44,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 00:54:44,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096954367] [2022-07-22 00:54:44,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096954367] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 00:54:44,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387436600] [2022-07-22 00:54:44,331 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 00:54:44,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 00:54:44,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 00:54:44,332 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 00:54:44,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 00:54:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 00:54:44,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 384 conjunts are in the unsatisfiable core [2022-07-22 00:54:44,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 00:54:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 90155 backedges. 0 proven. 90155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 00:54:45,674 INFO L328 TraceCheckSpWp]: Computing backward predicates...