./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.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/BrockschmidtCookFuhs-CAV2013-Fig9a.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 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 08:42:32,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 08:42:32,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 08:42:32,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 08:42:32,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 08:42:32,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 08:42:32,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 08:42:32,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 08:42:32,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 08:42:32,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 08:42:32,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 08:42:32,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 08:42:32,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 08:42:32,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 08:42:32,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 08:42:32,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 08:42:32,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 08:42:32,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 08:42:32,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 08:42:32,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 08:42:32,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 08:42:32,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 08:42:32,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 08:42:32,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 08:42:32,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 08:42:32,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 08:42:32,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 08:42:32,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 08:42:32,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 08:42:32,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 08:42:32,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 08:42:32,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 08:42:32,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 08:42:32,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 08:42:32,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 08:42:32,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 08:42:32,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 08:42:32,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 08:42:32,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 08:42:32,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 08:42:32,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 08:42:32,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-28 08:42:32,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 08:42:32,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 08:42:32,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 08:42:32,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 08:42:32,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 08:42:32,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 08:42:32,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 08:42:32,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 08:42:32,799 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 08:42:32,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 08:42:32,800 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 08:42:32,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 08:42:32,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 08:42:32,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 08:42:32,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 08:42:32,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 08:42:32,801 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-28 08:42:32,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 08:42:32,801 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 08:42:32,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 08:42:32,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 08:42:32,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 08:42:32,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 08:42:32,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:42:32,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 08:42:32,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 08:42:32,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 08:42:32,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 08:42:32,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 08:42:32,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 08:42:32,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2021-12-28 08:42:33,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 08:42:33,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 08:42:33,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 08:42:33,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 08:42:33,041 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 08:42:33,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-12-28 08:42:33,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db294f9a6/db70e2551d9341f9bcd43affe65a633a/FLAG3b3e211be [2021-12-28 08:42:33,416 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 08:42:33,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-12-28 08:42:33,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db294f9a6/db70e2551d9341f9bcd43affe65a633a/FLAG3b3e211be [2021-12-28 08:42:33,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db294f9a6/db70e2551d9341f9bcd43affe65a633a [2021-12-28 08:42:33,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 08:42:33,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 08:42:33,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 08:42:33,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 08:42:33,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 08:42:33,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:33,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2aa552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33, skipping insertion in model container [2021-12-28 08:42:33,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:33,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 08:42:33,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 08:42:33,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:42:33,953 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 08:42:33,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:42:33,967 INFO L208 MainTranslator]: Completed translation [2021-12-28 08:42:33,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33 WrapperNode [2021-12-28 08:42:33,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 08:42:33,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 08:42:33,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 08:42:33,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 08:42:33,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:33,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:33,993 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-12-28 08:42:33,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 08:42:33,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 08:42:33,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 08:42:33,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 08:42:34,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:34,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:34,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:34,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:34,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:34,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:34,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:34,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 08:42:34,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 08:42:34,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 08:42:34,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 08:42:34,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33" (1/1) ... [2021-12-28 08:42:34,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:42:34,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:34,048 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 08:42:34,091 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 08:42:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 08:42:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 08:42:34,146 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 08:42:34,147 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 08:42:34,234 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 08:42:34,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 08:42:34,241 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 08:42:34,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:42:34 BoogieIcfgContainer [2021-12-28 08:42:34,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 08:42:34,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 08:42:34,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 08:42:34,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 08:42:34,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 08:42:33" (1/3) ... [2021-12-28 08:42:34,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fe2d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:42:34, skipping insertion in model container [2021-12-28 08:42:34,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:42:33" (2/3) ... [2021-12-28 08:42:34,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fe2d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:42:34, skipping insertion in model container [2021-12-28 08:42:34,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:42:34" (3/3) ... [2021-12-28 08:42:34,247 INFO L111 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-12-28 08:42:34,250 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 08:42:34,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-28 08:42:34,275 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 08:42:34,280 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 08:42:34,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 08:42:34,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-28 08:42:34,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:34,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-28 08:42:34,291 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:34,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:34,295 INFO L85 PathProgramCache]: Analyzing trace with hash 889513814, now seen corresponding path program 1 times [2021-12-28 08:42:34,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:34,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192066354] [2021-12-28 08:42:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:34,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:34,394 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 08:42:34,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:34,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192066354] [2021-12-28 08:42:34,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192066354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:34,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:42:34,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:42:34,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092751655] [2021-12-28 08:42:34,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:34,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:42:34,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:34,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:42:34,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:42:34,417 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:34,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:34,452 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-12-28 08:42:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:42:34,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-28 08:42:34,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:34,469 INFO L225 Difference]: With dead ends: 35 [2021-12-28 08:42:34,469 INFO L226 Difference]: Without dead ends: 13 [2021-12-28 08:42:34,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 08:42:34,473 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:34,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 23 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-28 08:42:34,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-28 08:42:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:34,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-12-28 08:42:34,493 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2021-12-28 08:42:34,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:34,494 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-12-28 08:42:34,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:34,494 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-12-28 08:42:34,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-28 08:42:34,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:34,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-28 08:42:34,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 08:42:34,495 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:34,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:34,497 INFO L85 PathProgramCache]: Analyzing trace with hash 889513869, now seen corresponding path program 1 times [2021-12-28 08:42:34,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:34,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62651530] [2021-12-28 08:42:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:34,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:34,549 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 08:42:34,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:34,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62651530] [2021-12-28 08:42:34,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62651530] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:34,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:42:34,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:42:34,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814137306] [2021-12-28 08:42:34,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:34,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:42:34,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:42:34,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:42:34,556 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:34,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:34,591 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-12-28 08:42:34,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:42:34,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-28 08:42:34,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:34,592 INFO L225 Difference]: With dead ends: 15 [2021-12-28 08:42:34,592 INFO L226 Difference]: Without dead ends: 14 [2021-12-28 08:42:34,593 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 08:42:34,594 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12 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 08:42:34,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:34,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-28 08:42:34,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-28 08:42:34,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:34,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-28 08:42:34,600 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2021-12-28 08:42:34,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:34,600 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-28 08:42:34,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:34,601 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-28 08:42:34,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 08:42:34,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:34,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:34,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 08:42:34,603 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:34,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126220, now seen corresponding path program 1 times [2021-12-28 08:42:34,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:34,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739693982] [2021-12-28 08:42:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:34,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:34,640 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 08:42:34,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:34,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739693982] [2021-12-28 08:42:34,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739693982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:34,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:42:34,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:42:34,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852869663] [2021-12-28 08:42:34,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:34,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:42:34,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:34,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:42:34,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:42:34,648 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:34,671 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-12-28 08:42:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:42:34,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-28 08:42:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:34,673 INFO L225 Difference]: With dead ends: 15 [2021-12-28 08:42:34,673 INFO L226 Difference]: Without dead ends: 14 [2021-12-28 08:42:34,674 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 08:42:34,677 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:34,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:34,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-28 08:42:34,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-12-28 08:42:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:34,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-12-28 08:42:34,687 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2021-12-28 08:42:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:34,687 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-12-28 08:42:34,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-12-28 08:42:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 08:42:34,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:34,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:34,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 08:42:34,689 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:34,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:34,690 INFO L85 PathProgramCache]: Analyzing trace with hash -440488521, now seen corresponding path program 1 times [2021-12-28 08:42:34,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:34,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200094626] [2021-12-28 08:42:34,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:34,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 08:42:34,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:34,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200094626] [2021-12-28 08:42:34,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200094626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:42:34,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:42:34,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:42:34,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306170559] [2021-12-28 08:42:34,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:42:34,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:42:34,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:34,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:42:34,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:42:34,733 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 08:42:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:34,753 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-12-28 08:42:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:42:34,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 08:42:34,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:34,754 INFO L225 Difference]: With dead ends: 23 [2021-12-28 08:42:34,755 INFO L226 Difference]: Without dead ends: 22 [2021-12-28 08:42:34,755 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 08:42:34,756 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:34,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:34,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-28 08:42:34,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-12-28 08:42:34,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 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 08:42:34,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-12-28 08:42:34,766 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2021-12-28 08:42:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:34,767 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-12-28 08:42:34,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 08:42:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-12-28 08:42:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 08:42:34,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:34,769 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:34,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 08:42:34,769 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:34,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:34,770 INFO L85 PathProgramCache]: Analyzing trace with hash -440488466, now seen corresponding path program 1 times [2021-12-28 08:42:34,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:34,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641575044] [2021-12-28 08:42:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:34,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:34,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:34,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641575044] [2021-12-28 08:42:34,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641575044] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:34,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039780843] [2021-12-28 08:42:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:34,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:34,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:34,813 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 08:42:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:34,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 08:42:34,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:34,839 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 08:42:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:34,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:34,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:42:34,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039780843] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:34,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:34,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-12-28 08:42:34,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932189105] [2021-12-28 08:42:34,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:34,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 08:42:34,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:34,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 08:42:34,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-28 08:42:34,999 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:35,042 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-12-28 08:42:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 08:42:35,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-28 08:42:35,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:35,043 INFO L225 Difference]: With dead ends: 35 [2021-12-28 08:42:35,043 INFO L226 Difference]: Without dead ends: 21 [2021-12-28 08:42:35,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-28 08:42:35,045 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:35,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:35,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-28 08:42:35,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-12-28 08:42:35,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 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 08:42:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-28 08:42:35,048 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9 [2021-12-28 08:42:35,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:35,049 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-28 08:42:35,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:35,049 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-28 08:42:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-28 08:42:35,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:35,049 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:35,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:35,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:35,264 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:35,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1116435329, now seen corresponding path program 1 times [2021-12-28 08:42:35,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:35,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200076574] [2021-12-28 08:42:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:35,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 08:42:35,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:35,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200076574] [2021-12-28 08:42:35,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200076574] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:35,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62124177] [2021-12-28 08:42:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:35,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:35,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:35,290 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 08:42:35,291 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 08:42:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:35,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 08:42:35,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:35,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 08:42:35,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 08:42:35,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62124177] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:35,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:35,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-28 08:42:35,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338896246] [2021-12-28 08:42:35,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:35,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 08:42:35,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:35,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 08:42:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:42:35,370 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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 08:42:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:35,403 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-12-28 08:42:35,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 08:42:35,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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 16 [2021-12-28 08:42:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:35,404 INFO L225 Difference]: With dead ends: 47 [2021-12-28 08:42:35,404 INFO L226 Difference]: Without dead ends: 46 [2021-12-28 08:42:35,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 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 08:42:35,405 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:35,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:35,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-28 08:42:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2021-12-28 08:42:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 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 08:42:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2021-12-28 08:42:35,412 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 16 [2021-12-28 08:42:35,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:35,412 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2021-12-28 08:42:35,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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 08:42:35,412 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2021-12-28 08:42:35,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-28 08:42:35,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:35,413 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:35,434 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 08:42:35,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-28 08:42:35,629 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:35,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1116435274, now seen corresponding path program 1 times [2021-12-28 08:42:35,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:35,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486015880] [2021-12-28 08:42:35,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:35,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 08:42:35,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:35,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486015880] [2021-12-28 08:42:35,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486015880] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:35,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90561482] [2021-12-28 08:42:35,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:35,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:35,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:35,676 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 08:42:35,677 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 08:42:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:35,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 08:42:35,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 08:42:35,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 08:42:35,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90561482] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:35,838 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:35,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-12-28 08:42:35,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988782935] [2021-12-28 08:42:35,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:35,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 08:42:35,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 08:42:35,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-12-28 08:42:35,841 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 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 08:42:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:36,192 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-12-28 08:42:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-28 08:42:36,192 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 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 16 [2021-12-28 08:42:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:36,193 INFO L225 Difference]: With dead ends: 66 [2021-12-28 08:42:36,193 INFO L226 Difference]: Without dead ends: 65 [2021-12-28 08:42:36,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=321, Invalid=939, Unknown=0, NotChecked=0, Total=1260 [2021-12-28 08:42:36,195 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 69 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:36,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 17 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:42:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-28 08:42:36,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2021-12-28 08:42:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 54 states have internal predecessors, (66), 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 08:42:36,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2021-12-28 08:42:36,207 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 16 [2021-12-28 08:42:36,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:36,207 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2021-12-28 08:42:36,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 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 08:42:36,207 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2021-12-28 08:42:36,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-28 08:42:36,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:36,208 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:42:36,225 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 08:42:36,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:36,423 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:36,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:36,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1093492138, now seen corresponding path program 2 times [2021-12-28 08:42:36,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:36,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175931796] [2021-12-28 08:42:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:36,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 08:42:36,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:36,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175931796] [2021-12-28 08:42:36,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175931796] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:36,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598636910] [2021-12-28 08:42:36,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:42:36,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:36,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:36,475 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 08:42:36,476 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 08:42:36,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 08:42:36,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:36,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 08:42:36,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 08:42:36,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 08:42:36,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598636910] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:36,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:36,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2021-12-28 08:42:36,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770302498] [2021-12-28 08:42:36,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:36,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 08:42:36,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:36,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 08:42:36,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-12-28 08:42:36,718 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 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 08:42:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:37,220 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2021-12-28 08:42:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-28 08:42:37,220 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 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 22 [2021-12-28 08:42:37,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:37,221 INFO L225 Difference]: With dead ends: 101 [2021-12-28 08:42:37,221 INFO L226 Difference]: Without dead ends: 64 [2021-12-28 08:42:37,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=483, Invalid=1773, Unknown=0, NotChecked=0, Total=2256 [2021-12-28 08:42:37,222 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 78 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:37,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 18 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:42:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-28 08:42:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2021-12-28 08:42:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 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 08:42:37,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-12-28 08:42:37,228 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 22 [2021-12-28 08:42:37,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:37,228 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-12-28 08:42:37,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 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 08:42:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-12-28 08:42:37,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-28 08:42:37,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:37,229 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-12-28 08:42:37,261 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 08:42:37,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:37,444 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:37,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash -382530633, now seen corresponding path program 2 times [2021-12-28 08:42:37,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:37,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026112635] [2021-12-28 08:42:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:37,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-28 08:42:37,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:37,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026112635] [2021-12-28 08:42:37,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026112635] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:37,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207731268] [2021-12-28 08:42:37,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:42:37,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:37,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:37,475 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 08:42:37,476 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 08:42:37,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 08:42:37,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:37,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 08:42:37,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-28 08:42:37,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-28 08:42:37,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207731268] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:37,620 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:37,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2021-12-28 08:42:37,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364223537] [2021-12-28 08:42:37,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:37,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:42:37,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:37,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:42:37,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:42:37,629 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:37,646 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-12-28 08:42:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:42:37,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-28 08:42:37,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:37,648 INFO L225 Difference]: With dead ends: 43 [2021-12-28 08:42:37,648 INFO L226 Difference]: Without dead ends: 42 [2021-12-28 08:42:37,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 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 08:42:37,650 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:37,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:42:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-28 08:42:37,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-12-28 08:42:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 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 08:42:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-12-28 08:42:37,668 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 37 [2021-12-28 08:42:37,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:37,669 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-12-28 08:42:37,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:42:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-12-28 08:42:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-28 08:42:37,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:37,669 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1] [2021-12-28 08:42:37,701 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 08:42:37,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:37,902 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash -382530578, now seen corresponding path program 3 times [2021-12-28 08:42:37,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:37,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176439747] [2021-12-28 08:42:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:37,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 08:42:37,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:37,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176439747] [2021-12-28 08:42:37,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176439747] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:37,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948402394] [2021-12-28 08:42:37,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 08:42:37,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:37,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:37,985 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 08:42:38,001 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 08:42:38,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-28 08:42:38,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:38,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 08:42:38,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 08:42:38,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:38,237 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 08:42:38,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948402394] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:38,237 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:38,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-12-28 08:42:38,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558374586] [2021-12-28 08:42:38,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:38,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-28 08:42:38,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:38,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-28 08:42:38,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2021-12-28 08:42:38,240 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 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 08:42:39,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:39,314 INFO L93 Difference]: Finished difference Result 154 states and 181 transitions. [2021-12-28 08:42:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-12-28 08:42:39,315 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 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 37 [2021-12-28 08:42:39,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:39,316 INFO L225 Difference]: With dead ends: 154 [2021-12-28 08:42:39,316 INFO L226 Difference]: Without dead ends: 153 [2021-12-28 08:42:39,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2822 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1886, Invalid=5770, Unknown=0, NotChecked=0, Total=7656 [2021-12-28 08:42:39,318 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 277 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 21 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 08:42:39,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 21 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 08:42:39,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-28 08:42:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 106. [2021-12-28 08:42:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 105 states have internal predecessors, (127), 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 08:42:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2021-12-28 08:42:39,327 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 37 [2021-12-28 08:42:39,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:39,327 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2021-12-28 08:42:39,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 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 08:42:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2021-12-28 08:42:39,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-28 08:42:39,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:39,328 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 5, 4, 4, 4, 1, 1, 1, 1] [2021-12-28 08:42:39,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:39,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:39,542 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1842534286, now seen corresponding path program 4 times [2021-12-28 08:42:39,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:39,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451367400] [2021-12-28 08:42:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:39,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:39,623 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 59 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 08:42:39,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:39,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451367400] [2021-12-28 08:42:39,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451367400] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:39,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955053632] [2021-12-28 08:42:39,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 08:42:39,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:39,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:39,637 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 08:42:39,638 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 08:42:39,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 08:42:39,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:39,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 08:42:39,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 08:42:39,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 08:42:40,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955053632] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:40,189 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:40,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2021-12-28 08:42:40,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921058359] [2021-12-28 08:42:40,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:40,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-28 08:42:40,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:40,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-28 08:42:40,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2021-12-28 08:42:40,191 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 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 08:42:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:44,514 INFO L93 Difference]: Finished difference Result 360 states and 430 transitions. [2021-12-28 08:42:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2021-12-28 08:42:44,514 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 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 43 [2021-12-28 08:42:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:44,517 INFO L225 Difference]: With dead ends: 360 [2021-12-28 08:42:44,517 INFO L226 Difference]: Without dead ends: 296 [2021-12-28 08:42:44,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16311 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5653, Invalid=35353, Unknown=0, NotChecked=0, Total=41006 [2021-12-28 08:42:44,524 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 842 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:44,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 21 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 08:42:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-28 08:42:44,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 194. [2021-12-28 08:42:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.1917098445595855) internal successors, (230), 193 states have internal predecessors, (230), 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 08:42:44,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2021-12-28 08:42:44,555 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 43 [2021-12-28 08:42:44,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:44,555 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2021-12-28 08:42:44,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 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 08:42:44,556 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2021-12-28 08:42:44,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-28 08:42:44,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:44,557 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 5, 5, 5, 1, 1, 1, 1] [2021-12-28 08:42:44,573 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 08:42:44,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:44,773 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:44,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:44,774 INFO L85 PathProgramCache]: Analyzing trace with hash -369537692, now seen corresponding path program 5 times [2021-12-28 08:42:44,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:44,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562513917] [2021-12-28 08:42:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:44,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 19 proven. 163 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-28 08:42:44,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:44,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562513917] [2021-12-28 08:42:44,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562513917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:44,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963504498] [2021-12-28 08:42:44,899 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-28 08:42:44,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:44,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:44,900 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 08:42:44,901 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 08:42:44,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-12-28 08:42:44,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:44,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-28 08:42:44,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 64 proven. 119 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 08:42:45,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 36 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-28 08:42:45,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963504498] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:45,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:45,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 29 [2021-12-28 08:42:45,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194369241] [2021-12-28 08:42:45,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:45,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-28 08:42:45,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-28 08:42:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2021-12-28 08:42:45,419 INFO L87 Difference]: Start difference. First operand 194 states and 230 transitions. Second operand has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 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 08:42:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:46,433 INFO L93 Difference]: Finished difference Result 615 states and 726 transitions. [2021-12-28 08:42:46,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-28 08:42:46,434 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 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 50 [2021-12-28 08:42:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:46,436 INFO L225 Difference]: With dead ends: 615 [2021-12-28 08:42:46,436 INFO L226 Difference]: Without dead ends: 443 [2021-12-28 08:42:46,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1328, Invalid=4372, Unknown=0, NotChecked=0, Total=5700 [2021-12-28 08:42:46,441 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 135 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:46,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 19 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 08:42:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-28 08:42:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 391. [2021-12-28 08:42:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.1564102564102565) internal successors, (451), 390 states have internal predecessors, (451), 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 08:42:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 451 transitions. [2021-12-28 08:42:46,486 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 451 transitions. Word has length 50 [2021-12-28 08:42:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:46,486 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 451 transitions. [2021-12-28 08:42:46,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 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 08:42:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 451 transitions. [2021-12-28 08:42:46,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 08:42:46,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:46,491 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 6, 5, 5, 5, 1, 1, 1, 1] [2021-12-28 08:42:46,507 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 08:42:46,705 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,SelfDestructingSolverStorable11 [2021-12-28 08:42:46,705 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:46,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:46,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1350252270, now seen corresponding path program 6 times [2021-12-28 08:42:46,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:46,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029175812] [2021-12-28 08:42:46,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:46,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-28 08:42:46,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:46,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029175812] [2021-12-28 08:42:46,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029175812] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:46,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027362597] [2021-12-28 08:42:46,796 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-28 08:42:46,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:46,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:46,797 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 08:42:46,798 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 08:42:46,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-28 08:42:46,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:46,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-28 08:42:46,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 46 proven. 157 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-28 08:42:46,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 7 proven. 196 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-28 08:42:47,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027362597] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:47,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:47,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2021-12-28 08:42:47,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934640047] [2021-12-28 08:42:47,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:47,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-28 08:42:47,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:47,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-28 08:42:47,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2021-12-28 08:42:47,173 INFO L87 Difference]: Start difference. First operand 391 states and 451 transitions. Second operand has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 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 08:42:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:51,638 INFO L93 Difference]: Finished difference Result 1792 states and 2148 transitions. [2021-12-28 08:42:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2021-12-28 08:42:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 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 56 [2021-12-28 08:42:51,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:51,642 INFO L225 Difference]: With dead ends: 1792 [2021-12-28 08:42:51,647 INFO L226 Difference]: Without dead ends: 1791 [2021-12-28 08:42:51,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30921 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=12783, Invalid=52497, Unknown=0, NotChecked=0, Total=65280 [2021-12-28 08:42:51,654 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 390 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:51,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 16 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 08:42:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-12-28 08:42:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 610. [2021-12-28 08:42:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.1592775041050902) internal successors, (706), 609 states have internal predecessors, (706), 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 08:42:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 706 transitions. [2021-12-28 08:42:51,748 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 706 transitions. Word has length 56 [2021-12-28 08:42:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:51,748 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 706 transitions. [2021-12-28 08:42:51,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 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 08:42:51,748 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 706 transitions. [2021-12-28 08:42:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-28 08:42:51,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:51,749 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1] [2021-12-28 08:42:51,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 08:42:51,964 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,SelfDestructingSolverStorable12 [2021-12-28 08:42:51,964 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:51,965 INFO L85 PathProgramCache]: Analyzing trace with hash 529185006, now seen corresponding path program 7 times [2021-12-28 08:42:51,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:51,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682897135] [2021-12-28 08:42:51,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:51,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-28 08:42:52,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:52,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682897135] [2021-12-28 08:42:52,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682897135] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:52,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235381223] [2021-12-28 08:42:52,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-28 08:42:52,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:52,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:52,100 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 08:42:52,101 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 08:42:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:52,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-28 08:42:52,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-28 08:42:52,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-28 08:42:52,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235381223] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:52,620 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:52,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2021-12-28 08:42:52,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315902255] [2021-12-28 08:42:52,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:52,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-28 08:42:52,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:52,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-28 08:42:52,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2021-12-28 08:42:52,621 INFO L87 Difference]: Start difference. First operand 610 states and 706 transitions. Second operand has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 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 08:42:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:42:56,160 INFO L93 Difference]: Finished difference Result 4763 states and 5599 transitions. [2021-12-28 08:42:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2021-12-28 08:42:56,160 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 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 79 [2021-12-28 08:42:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:42:56,171 INFO L225 Difference]: With dead ends: 4763 [2021-12-28 08:42:56,172 INFO L226 Difference]: Without dead ends: 4762 [2021-12-28 08:42:56,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16160 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=9119, Invalid=29101, Unknown=0, NotChecked=0, Total=38220 [2021-12-28 08:42:56,174 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 526 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 08:42:56,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 27 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 08:42:56,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2021-12-28 08:42:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 1183. [2021-12-28 08:42:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.1455160744500845) internal successors, (1354), 1182 states have internal predecessors, (1354), 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 08:42:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1354 transitions. [2021-12-28 08:42:56,328 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1354 transitions. Word has length 79 [2021-12-28 08:42:56,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:42:56,328 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1354 transitions. [2021-12-28 08:42:56,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 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 08:42:56,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1354 transitions. [2021-12-28 08:42:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-28 08:42:56,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:42:56,330 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 11, 10, 10, 10, 1, 1, 1, 1] [2021-12-28 08:42:56,346 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 08:42:56,545 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,SelfDestructingSolverStorable13 [2021-12-28 08:42:56,546 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:42:56,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:42:56,546 INFO L85 PathProgramCache]: Analyzing trace with hash 480518066, now seen corresponding path program 8 times [2021-12-28 08:42:56,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:42:56,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124086604] [2021-12-28 08:42:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:42:56,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:42:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:42:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 380 proven. 92 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2021-12-28 08:42:56,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:42:56,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124086604] [2021-12-28 08:42:56,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124086604] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:42:56,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259843705] [2021-12-28 08:42:56,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:42:56,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:42:56,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:42:56,643 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 08:42:56,645 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 08:42:56,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 08:42:56,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:42:56,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 08:42:56,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:42:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 779 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-28 08:42:57,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:42:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 1 proven. 778 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-28 08:42:57,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259843705] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:42:57,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:42:57,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 42 [2021-12-28 08:42:57,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269232021] [2021-12-28 08:42:57,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:42:57,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-28 08:42:57,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:42:57,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-28 08:42:57,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1521, Unknown=0, NotChecked=0, Total=1806 [2021-12-28 08:42:57,540 INFO L87 Difference]: Start difference. First operand 1183 states and 1354 transitions. Second operand has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 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 08:43:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:25,373 INFO L93 Difference]: Finished difference Result 14418 states and 17384 transitions. [2021-12-28 08:43:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 887 states. [2021-12-28 08:43:25,389 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 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 97 [2021-12-28 08:43:25,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:25,458 INFO L225 Difference]: With dead ends: 14418 [2021-12-28 08:43:25,458 INFO L226 Difference]: Without dead ends: 13834 [2021-12-28 08:43:25,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 917 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424255 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=83086, Invalid=760556, Unknown=0, NotChecked=0, Total=843642 [2021-12-28 08:43:25,509 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 2973 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 1741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1741 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:25,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2973 Valid, 20 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1741 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 08:43:25,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13834 states. [2021-12-28 08:43:26,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13834 to 5483. [2021-12-28 08:43:26,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5483 states, 5482 states have (on average 1.1742064939802992) internal successors, (6437), 5482 states have internal predecessors, (6437), 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 08:43:26,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 6437 transitions. [2021-12-28 08:43:26,644 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 6437 transitions. Word has length 97 [2021-12-28 08:43:26,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:26,645 INFO L470 AbstractCegarLoop]: Abstraction has 5483 states and 6437 transitions. [2021-12-28 08:43:26,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 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 08:43:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 6437 transitions. [2021-12-28 08:43:26,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-28 08:43:26,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:26,651 INFO L514 BasicCegarLoop]: trace histogram [25, 24, 24, 19, 18, 18, 18, 1, 1, 1, 1] [2021-12-28 08:43:26,685 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 08:43:26,868 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,SelfDestructingSolverStorable14 [2021-12-28 08:43:26,868 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-28 08:43:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:26,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2108411831, now seen corresponding path program 9 times [2021-12-28 08:43:26,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:26,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986649434] [2021-12-28 08:43:26,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:26,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 0 proven. 1837 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-28 08:43:27,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:27,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986649434] [2021-12-28 08:43:27,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986649434] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:27,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165416744] [2021-12-28 08:43:27,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 08:43:27,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:27,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:27,127 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 08:43:27,131 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 08:43:27,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-12-28 08:43:27,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:43:27,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 08:43:27,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:27,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 941 proven. 267 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2021-12-28 08:43:27,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:43:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 941 proven. 267 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2021-12-28 08:43:28,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165416744] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:43:28,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:43:28,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 13] total 46 [2021-12-28 08:43:28,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235686888] [2021-12-28 08:43:28,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:43:28,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-28 08:43:28,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:28,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-28 08:43:28,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1765, Unknown=0, NotChecked=0, Total=2162 [2021-12-28 08:43:28,064 INFO L87 Difference]: Start difference. First operand 5483 states and 6437 transitions. Second operand has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 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)