./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 01a4b84af22ba9336b377376d27423612474043c2c250fad1845bccdee580746 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 08:42:09,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 08:42:09,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 08:42:09,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 08:42:09,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 08:42:09,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 08:42:09,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 08:42:09,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 08:42:09,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 08:42:09,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 08:42:09,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 08:42:09,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 08:42:09,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 08:42:09,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 08:42:09,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 08:42:09,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 08:42:09,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 08:42:09,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 08:42:09,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 08:42:09,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 08:42:09,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 08:42:09,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 08:42:09,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 08:42:09,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 08:42:09,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 08:42:09,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 08:42:09,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 08:42:09,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 08:42:09,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 08:42:09,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 08:42:09,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 08:42:09,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 08:42:09,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 08:42:09,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 08:42:09,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 08:42:09,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 08:42:09,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 08:42:09,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 08:42:09,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 08:42:09,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 08:42:09,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 08:42:09,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-28 08:42:09,785 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 08:42:09,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 08:42:09,788 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 08:42:09,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 08:42:09,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 08:42:09,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 08:42:09,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 08:42:09,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 08:42:09,790 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 08:42:09,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 08:42:09,791 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 08:42:09,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 08:42:09,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 08:42:09,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 08:42:09,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 08:42:09,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 08:42:09,792 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-28 08:42:09,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 08:42:09,792 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 08:42:09,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 08:42:09,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 08:42:09,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 08:42:09,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 08:42:09,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:42:09,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 08:42:09,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 08:42:09,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 08:42:09,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 08:42:09,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 08:42:09,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 08:42:09,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01a4b84af22ba9336b377376d27423612474043c2c250fad1845bccdee580746 [2021-12-28 08:42:10,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 08:42:10,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 08:42:10,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 08:42:10,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 08:42:10,108 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 08:42:10,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-2.c [2021-12-28 08:42:10,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c7762bf6/c7af84c20eee4abe942649097fb5a085/FLAGcf1d6edb5 [2021-12-28 08:42:10,521 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 08:42:10,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-2.c [2021-12-28 08:42:10,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c7762bf6/c7af84c20eee4abe942649097fb5a085/FLAGcf1d6edb5 [2021-12-28 08:42:10,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c7762bf6/c7af84c20eee4abe942649097fb5a085 [2021-12-28 08:42:10,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 08:42:10,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 08:42:10,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 08:42:10,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 08:42:10,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 08:42:10,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d401643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10, skipping insertion in model container [2021-12-28 08:42:10,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 08:42:10,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 08:42:10,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:42:10,681 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 08:42:10,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:42:10,724 INFO L208 MainTranslator]: Completed translation [2021-12-28 08:42:10,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10 WrapperNode [2021-12-28 08:42:10,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 08:42:10,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 08:42:10,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 08:42:10,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 08:42:10,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,753 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-12-28 08:42:10,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 08:42:10,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 08:42:10,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 08:42:10,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 08:42:10,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 08:42:10,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 08:42:10,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 08:42:10,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 08:42:10,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10" (1/1) ... [2021-12-28 08:42:10,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:42:10,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:10,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 08:42:10,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 08:42:10,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 08:42:10,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 08:42:10,878 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 08:42:10,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 08:42:10,998 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 08:42:11,002 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 08:42:11,003 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-28 08:42:11,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:42:11 BoogieIcfgContainer [2021-12-28 08:42:11,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 08:42:11,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 08:42:11,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 08:42:11,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 08:42:11,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 08:42:10" (1/3) ... [2021-12-28 08:42:11,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690cf894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:42:11, skipping insertion in model container [2021-12-28 08:42:11,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:10" (2/3) ... [2021-12-28 08:42:11,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690cf894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:42:11, skipping insertion in model container [2021-12-28 08:42:11,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:42:11" (3/3) ... [2021-12-28 08:42:11,026 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-nestedLoop-2.c [2021-12-28 08:42:11,029 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 08:42:11,030 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-28 08:42:11,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 08:42:11,088 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 08:42:11,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-28 08:42:11,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.8125) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-28 08:42:11,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:11,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-28 08:42:11,124 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:11,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:11,127 INFO L85 PathProgramCache]: Analyzing trace with hash 889513831, now seen corresponding path program 1 times [2021-12-28 08:42:11,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:11,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049081364] [2021-12-28 08:42:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:11,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:11,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:11,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049081364] [2021-12-28 08:42:11,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049081364] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:11,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:42:11,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:42:11,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960629997] [2021-12-28 08:42:11,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:11,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:42:11,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:11,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:42:11,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:42:11,288 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.8125) internal successors, (29), 22 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:11,349 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2021-12-28 08:42:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:42:11,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-28 08:42:11,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:11,357 INFO L225 Difference]: With dead ends: 61 [2021-12-28 08:42:11,357 INFO L226 Difference]: Without dead ends: 33 [2021-12-28 08:42:11,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:42:11,365 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:11,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:11,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-28 08:42:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22. [2021-12-28 08:42:11,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.5625) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-12-28 08:42:11,391 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2021-12-28 08:42:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:11,392 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-12-28 08:42:11,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-12-28 08:42:11,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-28 08:42:11,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:11,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-28 08:42:11,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 08:42:11,393 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:11,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:11,395 INFO L85 PathProgramCache]: Analyzing trace with hash 889513869, now seen corresponding path program 1 times [2021-12-28 08:42:11,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:11,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206321709] [2021-12-28 08:42:11,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:11,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:11,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:11,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206321709] [2021-12-28 08:42:11,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206321709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:11,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:42:11,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:42:11,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392147817] [2021-12-28 08:42:11,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:11,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:42:11,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:42:11,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:42:11,439 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:11,458 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-12-28 08:42:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:42:11,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-28 08:42:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:11,461 INFO L225 Difference]: With dead ends: 31 [2021-12-28 08:42:11,462 INFO L226 Difference]: Without dead ends: 30 [2021-12-28 08:42:11,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:42:11,465 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:11,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-28 08:42:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2021-12-28 08:42:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-12-28 08:42:11,474 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 6 [2021-12-28 08:42:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:11,474 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-12-28 08:42:11,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,475 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-12-28 08:42:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 08:42:11,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:11,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:11,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 08:42:11,476 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:11,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:11,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1805125066, now seen corresponding path program 1 times [2021-12-28 08:42:11,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:11,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262209982] [2021-12-28 08:42:11,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:11,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:11,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:11,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262209982] [2021-12-28 08:42:11,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262209982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:11,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:42:11,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:42:11,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920205059] [2021-12-28 08:42:11,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:11,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:42:11,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:42:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:42:11,505 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:11,520 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-12-28 08:42:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:42:11,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-28 08:42:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:11,521 INFO L225 Difference]: With dead ends: 38 [2021-12-28 08:42:11,521 INFO L226 Difference]: Without dead ends: 37 [2021-12-28 08:42:11,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:42:11,522 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:11,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 28 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:11,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-28 08:42:11,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2021-12-28 08:42:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-12-28 08:42:11,527 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 7 [2021-12-28 08:42:11,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:11,527 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-12-28 08:42:11,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-12-28 08:42:11,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 08:42:11,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:11,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:11,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 08:42:11,528 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:11,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:11,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126220, now seen corresponding path program 1 times [2021-12-28 08:42:11,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:11,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418007556] [2021-12-28 08:42:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:11,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:11,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:11,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418007556] [2021-12-28 08:42:11,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418007556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:11,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:42:11,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:42:11,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800023479] [2021-12-28 08:42:11,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:11,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:42:11,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:11,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:42:11,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:42:11,548 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:11,557 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-12-28 08:42:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:42:11,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-28 08:42:11,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:11,558 INFO L225 Difference]: With dead ends: 28 [2021-12-28 08:42:11,558 INFO L226 Difference]: Without dead ends: 27 [2021-12-28 08:42:11,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:42:11,559 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:11,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-28 08:42:11,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-28 08:42:11,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-12-28 08:42:11,563 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 7 [2021-12-28 08:42:11,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:11,564 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-12-28 08:42:11,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,564 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-12-28 08:42:11,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 08:42:11,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:11,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:11,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 08:42:11,565 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:11,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:11,565 INFO L85 PathProgramCache]: Analyzing trace with hash -440488050, now seen corresponding path program 1 times [2021-12-28 08:42:11,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:11,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478545230] [2021-12-28 08:42:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:11,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:11,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:11,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478545230] [2021-12-28 08:42:11,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478545230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:11,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:42:11,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:42:11,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616151092] [2021-12-28 08:42:11,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:11,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:42:11,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:11,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:42:11,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:42:11,590 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:11,641 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2021-12-28 08:42:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:42:11,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-12-28 08:42:11,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:11,642 INFO L225 Difference]: With dead ends: 56 [2021-12-28 08:42:11,642 INFO L226 Difference]: Without dead ends: 54 [2021-12-28 08:42:11,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:42:11,643 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:11,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 36 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:11,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-28 08:42:11,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-12-28 08:42:11,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2021-12-28 08:42:11,653 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 9 [2021-12-28 08:42:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:11,653 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-12-28 08:42:11,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2021-12-28 08:42:11,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 08:42:11,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:11,654 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:11,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 08:42:11,655 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:11,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash -804628066, now seen corresponding path program 1 times [2021-12-28 08:42:11,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:11,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603709462] [2021-12-28 08:42:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:11,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:11,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:11,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603709462] [2021-12-28 08:42:11,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603709462] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:11,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468877960] [2021-12-28 08:42:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:11,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:11,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:11,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:11,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 08:42:11,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 08:42:11,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:11,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:11,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:11,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468877960] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:11,836 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:11,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-28 08:42:11,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459887124] [2021-12-28 08:42:11,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:11,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 08:42:11,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:11,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 08:42:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:42:11,838 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2021-12-28 08:42:11,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:11,872 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-12-28 08:42:11,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 08:42:11,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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 [2021-12-28 08:42:11,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:11,874 INFO L225 Difference]: With dead ends: 82 [2021-12-28 08:42:11,874 INFO L226 Difference]: Without dead ends: 81 [2021-12-28 08:42:11,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:42:11,875 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 38 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:11,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 76 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:11,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-28 08:42:11,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 47. [2021-12-28 08:42:11,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 46 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) [2021-12-28 08:42:11,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2021-12-28 08:42:11,882 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 10 [2021-12-28 08:42:11,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:11,882 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2021-12-28 08:42:11,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2021-12-28 08:42:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2021-12-28 08:42:11,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 08:42:11,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:11,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:11,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 08:42:12,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-28 08:42:12,106 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:12,107 INFO L85 PathProgramCache]: Analyzing trace with hash -770227592, now seen corresponding path program 1 times [2021-12-28 08:42:12,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:12,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128578823] [2021-12-28 08:42:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:12,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:12,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:12,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128578823] [2021-12-28 08:42:12,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128578823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:12,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:42:12,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:42:12,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052988439] [2021-12-28 08:42:12,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:12,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:42:12,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:12,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:42:12,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:42:12,139 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:12,163 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2021-12-28 08:42:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:42:12,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-28 08:42:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:12,164 INFO L225 Difference]: With dead ends: 51 [2021-12-28 08:42:12,164 INFO L226 Difference]: Without dead ends: 49 [2021-12-28 08:42:12,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:42:12,165 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:12,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 16 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-28 08:42:12,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-12-28 08:42:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 39 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2021-12-28 08:42:12,170 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 10 [2021-12-28 08:42:12,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:12,171 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2021-12-28 08:42:12,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:12,171 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2021-12-28 08:42:12,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 08:42:12,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:12,171 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:12,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 08:42:12,172 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:12,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:12,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1892694136, now seen corresponding path program 1 times [2021-12-28 08:42:12,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:12,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297132811] [2021-12-28 08:42:12,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:12,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:12,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:12,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297132811] [2021-12-28 08:42:12,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297132811] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:12,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094879874] [2021-12-28 08:42:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:12,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:12,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:12,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:12,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 08:42:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:12,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 08:42:12,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:12,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:12,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094879874] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:12,258 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:12,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-28 08:42:12,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577580785] [2021-12-28 08:42:12,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:12,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 08:42:12,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 08:42:12,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:42:12,260 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:12,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:12,288 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2021-12-28 08:42:12,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 08:42:12,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-28 08:42:12,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:12,289 INFO L225 Difference]: With dead ends: 103 [2021-12-28 08:42:12,289 INFO L226 Difference]: Without dead ends: 102 [2021-12-28 08:42:12,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:42:12,290 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:12,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 58 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:12,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-28 08:42:12,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 79. [2021-12-28 08:42:12,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 76 states have (on average 1.368421052631579) internal successors, (104), 78 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:12,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2021-12-28 08:42:12,299 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 11 [2021-12-28 08:42:12,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:12,299 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2021-12-28 08:42:12,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:12,299 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2021-12-28 08:42:12,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-28 08:42:12,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:12,300 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:12,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:12,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-28 08:42:12,515 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:12,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:12,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1454338886, now seen corresponding path program 1 times [2021-12-28 08:42:12,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:12,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848538608] [2021-12-28 08:42:12,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:12,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 08:42:12,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:12,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848538608] [2021-12-28 08:42:12,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848538608] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:12,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275593873] [2021-12-28 08:42:12,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:12,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:12,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:12,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:12,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 08:42:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:12,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 08:42:12,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:12,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:12,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275593873] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:12,625 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:12,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2021-12-28 08:42:12,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80904821] [2021-12-28 08:42:12,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:12,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 08:42:12,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:12,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 08:42:12,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-28 08:42:12,626 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:12,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:12,819 INFO L93 Difference]: Finished difference Result 259 states and 350 transitions. [2021-12-28 08:42:12,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 08:42:12,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-28 08:42:12,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:12,821 INFO L225 Difference]: With dead ends: 259 [2021-12-28 08:42:12,821 INFO L226 Difference]: Without dead ends: 257 [2021-12-28 08:42:12,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2021-12-28 08:42:12,822 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 146 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:12,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 67 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:42:12,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-12-28 08:42:12,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 119. [2021-12-28 08:42:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.3247863247863247) internal successors, (155), 118 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 155 transitions. [2021-12-28 08:42:12,835 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 155 transitions. Word has length 12 [2021-12-28 08:42:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:12,835 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 155 transitions. [2021-12-28 08:42:12,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 155 transitions. [2021-12-28 08:42:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 08:42:12,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:12,836 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:12,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:13,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:13,053 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:13,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:13,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1316567627, now seen corresponding path program 1 times [2021-12-28 08:42:13,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:13,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632090472] [2021-12-28 08:42:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:13,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 08:42:13,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:13,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632090472] [2021-12-28 08:42:13,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632090472] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:13,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369894001] [2021-12-28 08:42:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:13,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:13,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:13,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:13,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 08:42:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:13,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 08:42:13,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 08:42:13,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 08:42:13,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369894001] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:13,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:13,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-12-28 08:42:13,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213523294] [2021-12-28 08:42:13,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:13,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 08:42:13,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 08:42:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:42:13,230 INFO L87 Difference]: Start difference. First operand 119 states and 155 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:13,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:13,273 INFO L93 Difference]: Finished difference Result 187 states and 242 transitions. [2021-12-28 08:42:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 08:42:13,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 18 [2021-12-28 08:42:13,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:13,275 INFO L225 Difference]: With dead ends: 187 [2021-12-28 08:42:13,275 INFO L226 Difference]: Without dead ends: 130 [2021-12-28 08:42:13,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 08:42:13,277 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:13,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 49 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:13,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-28 08:42:13,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2021-12-28 08:42:13,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.2950819672131149) internal successors, (158), 123 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2021-12-28 08:42:13,304 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 18 [2021-12-28 08:42:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:13,304 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2021-12-28 08:42:13,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2021-12-28 08:42:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 08:42:13,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:13,305 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:13,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:13,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:13,522 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:13,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:13,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1910011595, now seen corresponding path program 2 times [2021-12-28 08:42:13,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:13,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143080081] [2021-12-28 08:42:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:13,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 08:42:13,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:13,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143080081] [2021-12-28 08:42:13,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143080081] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:13,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200720705] [2021-12-28 08:42:13,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:42:13,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:13,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:13,550 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:13,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 08:42:13,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 08:42:13,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:13,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 08:42:13,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 08:42:13,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 08:42:13,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200720705] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:13,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:13,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2021-12-28 08:42:13,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765338392] [2021-12-28 08:42:13,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:13,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:42:13,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:13,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:42:13,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:42:13,634 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2021-12-28 08:42:13,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:13,653 INFO L93 Difference]: Finished difference Result 125 states and 158 transitions. [2021-12-28 08:42:13,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:42:13,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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 18 [2021-12-28 08:42:13,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:13,654 INFO L225 Difference]: With dead ends: 125 [2021-12-28 08:42:13,654 INFO L226 Difference]: Without dead ends: 107 [2021-12-28 08:42:13,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:42:13,655 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:13,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 22 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:13,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-28 08:42:13,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-12-28 08:42:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.3047619047619048) internal successors, (137), 106 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 137 transitions. [2021-12-28 08:42:13,665 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 137 transitions. Word has length 18 [2021-12-28 08:42:13,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:13,666 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 137 transitions. [2021-12-28 08:42:13,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2021-12-28 08:42:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 137 transitions. [2021-12-28 08:42:13,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-28 08:42:13,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:13,666 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:13,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:13,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-28 08:42:13,883 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:13,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash 44886526, now seen corresponding path program 1 times [2021-12-28 08:42:13,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:13,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870068602] [2021-12-28 08:42:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:13,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:13,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:13,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870068602] [2021-12-28 08:42:13,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870068602] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:13,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247893201] [2021-12-28 08:42:13,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:13,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:13,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:13,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:13,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 08:42:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:13,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 08:42:13,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:13,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:14,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247893201] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:14,053 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:14,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-28 08:42:14,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600792588] [2021-12-28 08:42:14,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:14,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-28 08:42:14,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:14,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-28 08:42:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-12-28 08:42:14,054 INFO L87 Difference]: Start difference. First operand 107 states and 137 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:14,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:14,430 INFO L93 Difference]: Finished difference Result 541 states and 681 transitions. [2021-12-28 08:42:14,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-28 08:42:14,431 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-28 08:42:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:14,432 INFO L225 Difference]: With dead ends: 541 [2021-12-28 08:42:14,432 INFO L226 Difference]: Without dead ends: 540 [2021-12-28 08:42:14,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=560, Invalid=1080, Unknown=0, NotChecked=0, Total=1640 [2021-12-28 08:42:14,434 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 289 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:14,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 85 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:42:14,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-12-28 08:42:14,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 209. [2021-12-28 08:42:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 207 states have (on average 1.2995169082125604) internal successors, (269), 208 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 269 transitions. [2021-12-28 08:42:14,453 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 269 transitions. Word has length 20 [2021-12-28 08:42:14,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:14,454 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 269 transitions. [2021-12-28 08:42:14,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:14,454 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 269 transitions. [2021-12-28 08:42:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 08:42:14,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:14,457 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2021-12-28 08:42:14,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:14,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:14,671 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:14,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1266845005, now seen corresponding path program 2 times [2021-12-28 08:42:14,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:14,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521313450] [2021-12-28 08:42:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:14,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 08:42:14,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:14,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521313450] [2021-12-28 08:42:14,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521313450] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:14,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479756736] [2021-12-28 08:42:14,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:42:14,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:14,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:14,724 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:14,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 08:42:14,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 08:42:14,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:14,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 08:42:14,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 08:42:14,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 08:42:14,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479756736] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:14,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:14,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2021-12-28 08:42:14,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222498754] [2021-12-28 08:42:14,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:14,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:42:14,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:14,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:42:14,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:42:14,836 INFO L87 Difference]: Start difference. First operand 209 states and 269 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:14,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:14,857 INFO L93 Difference]: Finished difference Result 209 states and 269 transitions. [2021-12-28 08:42:14,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:42:14,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-28 08:42:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:14,859 INFO L225 Difference]: With dead ends: 209 [2021-12-28 08:42:14,859 INFO L226 Difference]: Without dead ends: 208 [2021-12-28 08:42:14,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:42:14,860 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:14,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:14,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-28 08:42:14,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 68. [2021-12-28 08:42:14,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 67 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2021-12-28 08:42:14,871 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 26 [2021-12-28 08:42:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:14,871 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2021-12-28 08:42:14,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:14,872 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2021-12-28 08:42:14,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-28 08:42:14,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:14,873 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:14,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:15,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:15,089 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:15,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1344159630, now seen corresponding path program 2 times [2021-12-28 08:42:15,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:15,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999474237] [2021-12-28 08:42:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:15,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 08:42:15,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:15,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999474237] [2021-12-28 08:42:15,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999474237] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:15,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364802748] [2021-12-28 08:42:15,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:42:15,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:15,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:15,138 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:15,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 08:42:15,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 08:42:15,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:15,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 08:42:15,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 08:42:15,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 08:42:15,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364802748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:15,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 08:42:15,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-28 08:42:15,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108549115] [2021-12-28 08:42:15,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:15,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:42:15,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:15,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:42:15,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-28 08:42:15,218 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:15,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:15,245 INFO L93 Difference]: Finished difference Result 134 states and 165 transitions. [2021-12-28 08:42:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:42:15,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-28 08:42:15,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:15,246 INFO L225 Difference]: With dead ends: 134 [2021-12-28 08:42:15,246 INFO L226 Difference]: Without dead ends: 80 [2021-12-28 08:42:15,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-28 08:42:15,248 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:15,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:15,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-28 08:42:15,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2021-12-28 08:42:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 74 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2021-12-28 08:42:15,258 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 33 [2021-12-28 08:42:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:15,258 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2021-12-28 08:42:15,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2021-12-28 08:42:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-28 08:42:15,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:15,265 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:15,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:15,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-28 08:42:15,479 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:15,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:15,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1979832252, now seen corresponding path program 3 times [2021-12-28 08:42:15,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:15,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566945113] [2021-12-28 08:42:15,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:15,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 08:42:15,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:15,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566945113] [2021-12-28 08:42:15,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566945113] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:15,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050566799] [2021-12-28 08:42:15,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 08:42:15,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:15,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:15,545 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:15,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 08:42:15,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-28 08:42:15,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:15,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 08:42:15,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 08:42:15,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 08:42:15,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050566799] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:15,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:15,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2021-12-28 08:42:15,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839655197] [2021-12-28 08:42:15,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:15,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 08:42:15,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:15,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 08:42:15,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-12-28 08:42:15,702 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:16,005 INFO L93 Difference]: Finished difference Result 177 states and 201 transitions. [2021-12-28 08:42:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-28 08:42:16,005 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 15 states have internal predecessors, (57), 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 35 [2021-12-28 08:42:16,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:16,006 INFO L225 Difference]: With dead ends: 177 [2021-12-28 08:42:16,006 INFO L226 Difference]: Without dead ends: 41 [2021-12-28 08:42:16,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=530, Invalid=1030, Unknown=0, NotChecked=0, Total=1560 [2021-12-28 08:42:16,007 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 200 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:16,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 66 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:42:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-28 08:42:16,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-12-28 08:42:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:16,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-12-28 08:42:16,023 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2021-12-28 08:42:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:16,023 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-12-28 08:42:16,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-12-28 08:42:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-28 08:42:16,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:16,024 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:16,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-28 08:42:16,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-28 08:42:16,241 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:16,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1441465774, now seen corresponding path program 3 times [2021-12-28 08:42:16,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:16,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764553612] [2021-12-28 08:42:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:16,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:16,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:16,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764553612] [2021-12-28 08:42:16,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764553612] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:16,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045445315] [2021-12-28 08:42:16,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 08:42:16,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:16,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:16,322 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:16,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 08:42:16,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-12-28 08:42:16,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:16,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 08:42:16,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:16,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:16,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045445315] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:16,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:16,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-28 08:42:16,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999832905] [2021-12-28 08:42:16,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:16,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-28 08:42:16,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:16,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-28 08:42:16,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=348, Unknown=0, NotChecked=0, Total=552 [2021-12-28 08:42:16,567 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:16,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:16,953 INFO L93 Difference]: Finished difference Result 128 states and 148 transitions. [2021-12-28 08:42:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-28 08:42:16,954 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 24 states have internal predecessors, (68), 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 35 [2021-12-28 08:42:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:16,954 INFO L225 Difference]: With dead ends: 128 [2021-12-28 08:42:16,954 INFO L226 Difference]: Without dead ends: 71 [2021-12-28 08:42:16,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=904, Invalid=1748, Unknown=0, NotChecked=0, Total=2652 [2021-12-28 08:42:16,956 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 325 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:16,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 96 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:42:16,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-28 08:42:16,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-12-28 08:42:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-12-28 08:42:16,963 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 35 [2021-12-28 08:42:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:16,963 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-12-28 08:42:16,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 24 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-12-28 08:42:16,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 08:42:16,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:16,963 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:16,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:17,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-28 08:42:17,164 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:17,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1850377006, now seen corresponding path program 4 times [2021-12-28 08:42:17,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:17,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763670628] [2021-12-28 08:42:17,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:17,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 478 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:17,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:17,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763670628] [2021-12-28 08:42:17,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763670628] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:17,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295012623] [2021-12-28 08:42:17,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 08:42:17,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:17,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:17,347 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:17,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 08:42:17,377 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 08:42:17,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:17,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-28 08:42:17,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:17,479 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 478 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:17,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 0 proven. 478 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:17,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295012623] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:17,967 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:17,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2021-12-28 08:42:17,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922342652] [2021-12-28 08:42:17,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:17,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-28 08:42:17,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:17,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-28 08:42:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=794, Invalid=1098, Unknown=0, NotChecked=0, Total=1892 [2021-12-28 08:42:17,969 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 44 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 44 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) [2021-12-28 08:42:19,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:19,143 INFO L93 Difference]: Finished difference Result 238 states and 278 transitions. [2021-12-28 08:42:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-12-28 08:42:19,143 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 44 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) Word has length 65 [2021-12-28 08:42:19,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:19,144 INFO L225 Difference]: With dead ends: 238 [2021-12-28 08:42:19,144 INFO L226 Difference]: Without dead ends: 131 [2021-12-28 08:42:19,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3499, Invalid=6803, Unknown=0, NotChecked=0, Total=10302 [2021-12-28 08:42:19,147 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 491 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:19,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 123 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 08:42:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-28 08:42:19,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2021-12-28 08:42:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:19,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2021-12-28 08:42:19,163 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 65 [2021-12-28 08:42:19,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:19,164 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2021-12-28 08:42:19,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 44 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) [2021-12-28 08:42:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2021-12-28 08:42:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-28 08:42:19,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:19,165 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:19,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:19,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-28 08:42:19,366 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:19,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1185127982, now seen corresponding path program 5 times [2021-12-28 08:42:19,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:19,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811016394] [2021-12-28 08:42:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:19,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2148 backedges. 0 proven. 2148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:19,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:19,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811016394] [2021-12-28 08:42:19,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811016394] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:19,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280036332] [2021-12-28 08:42:19,943 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-28 08:42:19,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:19,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:19,944 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:19,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-28 08:42:19,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2021-12-28 08:42:19,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-28 08:42:20,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2148 backedges. 0 proven. 2148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:20,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2148 backedges. 0 proven. 2148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:21,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280036332] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:21,787 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:21,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 83 [2021-12-28 08:42:21,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962386528] [2021-12-28 08:42:21,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:21,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-12-28 08:42:21,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:21,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-12-28 08:42:21,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3174, Invalid=3798, Unknown=0, NotChecked=0, Total=6972 [2021-12-28 08:42:21,791 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 84 states, 83 states have (on average 2.9879518072289155) internal successors, (248), 84 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:25,569 INFO L93 Difference]: Finished difference Result 458 states and 538 transitions. [2021-12-28 08:42:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-12-28 08:42:25,570 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.9879518072289155) internal successors, (248), 84 states have internal predecessors, (248), 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 125 [2021-12-28 08:42:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:25,571 INFO L225 Difference]: With dead ends: 458 [2021-12-28 08:42:25,571 INFO L226 Difference]: Without dead ends: 251 [2021-12-28 08:42:25,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8506 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=13789, Invalid=26813, Unknown=0, NotChecked=0, Total=40602 [2021-12-28 08:42:25,578 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 1052 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:25,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 188 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 08:42:25,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-28 08:42:25,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2021-12-28 08:42:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.0080645161290323) internal successors, (250), 248 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:25,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2021-12-28 08:42:25,601 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 125 [2021-12-28 08:42:25,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:25,601 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2021-12-28 08:42:25,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.9879518072289155) internal successors, (248), 84 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2021-12-28 08:42:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-28 08:42:25,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:25,603 INFO L514 BasicCegarLoop]: trace histogram [78, 78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:25,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:25,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-28 08:42:25,812 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:25,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:25,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1151445970, now seen corresponding path program 6 times [2021-12-28 08:42:25,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:25,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083526074] [2021-12-28 08:42:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:25,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9088 backedges. 0 proven. 9088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:27,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:27,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083526074] [2021-12-28 08:42:27,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083526074] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:27,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59226304] [2021-12-28 08:42:27,808 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-28 08:42:27,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:27,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:27,809 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:27,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-28 08:42:27,906 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 80 check-sat command(s) [2021-12-28 08:42:27,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:27,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-28 08:42:27,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9088 backedges. 0 proven. 9088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:28,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:33,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9088 backedges. 0 proven. 9088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:33,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59226304] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:33,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:33,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82, 82] total 163 [2021-12-28 08:42:33,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658931764] [2021-12-28 08:42:33,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:33,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2021-12-28 08:42:33,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:33,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2021-12-28 08:42:33,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12734, Invalid=13998, Unknown=0, NotChecked=0, Total=26732 [2021-12-28 08:42:33,767 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand has 164 states, 163 states have (on average 2.9938650306748467) internal successors, (488), 164 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:47,819 INFO L93 Difference]: Finished difference Result 898 states and 1058 transitions. [2021-12-28 08:42:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2021-12-28 08:42:47,820 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 163 states have (on average 2.9938650306748467) internal successors, (488), 164 states have internal predecessors, (488), 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 245 [2021-12-28 08:42:47,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:47,823 INFO L225 Difference]: With dead ends: 898 [2021-12-28 08:42:47,827 INFO L226 Difference]: Without dead ends: 491 [2021-12-28 08:42:47,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 400 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34606 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=54769, Invalid=106433, Unknown=0, NotChecked=0, Total=161202 [2021-12-28 08:42:47,836 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 2061 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:47,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2061 Valid, 325 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 08:42:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-28 08:42:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2021-12-28 08:42:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.0040983606557377) internal successors, (490), 488 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 490 transitions. [2021-12-28 08:42:47,881 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 490 transitions. Word has length 245 [2021-12-28 08:42:47,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:47,882 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 490 transitions. [2021-12-28 08:42:47,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 163 states have (on average 2.9938650306748467) internal successors, (488), 164 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:47,882 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 490 transitions. [2021-12-28 08:42:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2021-12-28 08:42:47,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:47,885 INFO L514 BasicCegarLoop]: trace histogram [158, 158, 158, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:47,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:48,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:48,099 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-28 08:42:48,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:48,100 INFO L85 PathProgramCache]: Analyzing trace with hash -301318190, now seen corresponding path program 7 times [2021-12-28 08:42:48,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:48,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79051047] [2021-12-28 08:42:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:48,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 37368 backedges. 0 proven. 37368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:55,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:55,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79051047] [2021-12-28 08:42:55,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79051047] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:55,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421294310] [2021-12-28 08:42:55,374 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-28 08:42:55,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:55,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:55,375 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 08:42:55,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-28 08:42:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:55,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 162 conjunts are in the unsatisfiable core [2021-12-28 08:42:55,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 37368 backedges. 0 proven. 37368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:56,294 INFO L328 TraceCheckSpWp]: Computing backward predicates...