./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 574ddb4e 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-?-574ddb4 [2023-02-18 23:31:05,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 23:31:05,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 23:31:05,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 23:31:05,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 23:31:05,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 23:31:05,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 23:31:05,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 23:31:05,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 23:31:05,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 23:31:05,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 23:31:05,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 23:31:05,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 23:31:05,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 23:31:05,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 23:31:05,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 23:31:05,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 23:31:05,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 23:31:05,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 23:31:05,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 23:31:05,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 23:31:05,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 23:31:05,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 23:31:05,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 23:31:05,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 23:31:05,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 23:31:05,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 23:31:05,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 23:31:05,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 23:31:05,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 23:31:05,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 23:31:05,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 23:31:05,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 23:31:05,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 23:31:05,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 23:31:05,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 23:31:05,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 23:31:05,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 23:31:05,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 23:31:05,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 23:31:05,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 23:31:05,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-18 23:31:05,818 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 23:31:05,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 23:31:05,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 23:31:05,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 23:31:05,820 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 23:31:05,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 23:31:05,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 23:31:05,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 23:31:05,820 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 23:31:05,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 23:31:05,821 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 23:31:05,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 23:31:05,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 23:31:05,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 23:31:05,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 23:31:05,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 23:31:05,821 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 23:31:05,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 23:31:05,821 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 23:31:05,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 23:31:05,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 23:31:05,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 23:31:05,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 23:31:05,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 23:31:05,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 23:31:05,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 23:31:05,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 23:31:05,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 23:31:05,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 23:31:05,823 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 23:31:05,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 23:31:05,823 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 23:31:05,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 23:31:05,823 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 23:31:05,823 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2023-02-18 23:31:05,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 23:31:06,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 23:31:06,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 23:31:06,016 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 23:31:06,017 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 23:31:06,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-18 23:31:06,914 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 23:31:07,074 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 23:31:07,075 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-18 23:31:07,081 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da243b64/2e66c39f9e604c78bfbe6f894cdc2114/FLAG475c0b7bd [2023-02-18 23:31:07,097 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da243b64/2e66c39f9e604c78bfbe6f894cdc2114 [2023-02-18 23:31:07,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 23:31:07,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 23:31:07,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 23:31:07,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 23:31:07,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 23:31:07,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd3d5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07, skipping insertion in model container [2023-02-18 23:31:07,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 23:31:07,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 23:31:07,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 23:31:07,235 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 23:31:07,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 23:31:07,260 INFO L208 MainTranslator]: Completed translation [2023-02-18 23:31:07,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07 WrapperNode [2023-02-18 23:31:07,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 23:31:07,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 23:31:07,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 23:31:07,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 23:31:07,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,280 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2023-02-18 23:31:07,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 23:31:07,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 23:31:07,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 23:31:07,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 23:31:07,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,296 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 23:31:07,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 23:31:07,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 23:31:07,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 23:31:07,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (1/1) ... [2023-02-18 23:31:07,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 23:31:07,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:07,324 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) [2023-02-18 23:31:07,342 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 [2023-02-18 23:31:07,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 23:31:07,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 23:31:07,398 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 23:31:07,399 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 23:31:07,497 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 23:31:07,512 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 23:31:07,513 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 23:31:07,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:31:07 BoogieIcfgContainer [2023-02-18 23:31:07,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 23:31:07,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 23:31:07,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 23:31:07,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 23:31:07,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 11:31:07" (1/3) ... [2023-02-18 23:31:07,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7d5727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:31:07, skipping insertion in model container [2023-02-18 23:31:07,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 11:31:07" (2/3) ... [2023-02-18 23:31:07,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7d5727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 11:31:07, skipping insertion in model container [2023-02-18 23:31:07,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 11:31:07" (3/3) ... [2023-02-18 23:31:07,535 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-18 23:31:07,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 23:31:07,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-18 23:31:07,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 23:31:07,614 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b92dec9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 23:31:07,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-18 23:31:07,619 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) [2023-02-18 23:31:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 23:31:07,624 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:07,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 23:31:07,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:07,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash 889513814, now seen corresponding path program 1 times [2023-02-18 23:31:07,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:07,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793537207] [2023-02-18 23:31:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:07,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:31:07,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:07,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793537207] [2023-02-18 23:31:07,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793537207] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:31:07,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:31:07,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 23:31:07,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062171339] [2023-02-18 23:31:07,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:31:07,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 23:31:07,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:07,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 23:31:07,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:31:07,813 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) [2023-02-18 23:31:07,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:07,884 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-02-18 23:31:07,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 23:31:07,887 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 [2023-02-18 23:31:07,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:07,892 INFO L225 Difference]: With dead ends: 35 [2023-02-18 23:31:07,892 INFO L226 Difference]: Without dead ends: 13 [2023-02-18 23:31:07,894 INFO L412 NwaCegarLoop]: 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 [2023-02-18 23:31:07,897 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:07,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:31:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-18 23:31:07,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-18 23:31:07,920 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) [2023-02-18 23:31:07,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-02-18 23:31:07,921 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2023-02-18 23:31:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:07,921 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-18 23:31:07,922 INFO L496 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) [2023-02-18 23:31:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-02-18 23:31:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 23:31:07,922 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:07,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 23:31:07,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 23:31:07,923 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:07,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:07,923 INFO L85 PathProgramCache]: Analyzing trace with hash 889513869, now seen corresponding path program 1 times [2023-02-18 23:31:07,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:07,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485125999] [2023-02-18 23:31:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:07,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:31:07,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:07,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485125999] [2023-02-18 23:31:07,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485125999] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:31:07,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:31:07,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 23:31:07,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685777831] [2023-02-18 23:31:07,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:31:07,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 23:31:07,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:07,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 23:31:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:31:07,971 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) [2023-02-18 23:31:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:07,989 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-02-18 23:31:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 23:31:07,990 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 [2023-02-18 23:31:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:07,990 INFO L225 Difference]: With dead ends: 14 [2023-02-18 23:31:07,990 INFO L226 Difference]: Without dead ends: 13 [2023-02-18 23:31:07,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 23:31:07,991 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:07,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:31:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-18 23:31:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-02-18 23:31:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-02-18 23:31:08,008 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 6 [2023-02-18 23:31:08,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:08,009 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-18 23:31:08,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:08,009 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-02-18 23:31:08,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 23:31:08,009 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:08,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:31:08,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 23:31:08,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126220, now seen corresponding path program 1 times [2023-02-18 23:31:08,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:08,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949842405] [2023-02-18 23:31:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:08,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:31:08,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:08,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949842405] [2023-02-18 23:31:08,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949842405] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:31:08,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:31:08,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 23:31:08,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285920293] [2023-02-18 23:31:08,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:31:08,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 23:31:08,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:08,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 23:31:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:31:08,050 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:08,065 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2023-02-18 23:31:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 23:31:08,066 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 [2023-02-18 23:31:08,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:08,066 INFO L225 Difference]: With dead ends: 15 [2023-02-18 23:31:08,067 INFO L226 Difference]: Without dead ends: 14 [2023-02-18 23:31:08,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 23:31:08,068 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 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 [2023-02-18 23:31:08,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:31:08,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-02-18 23:31:08,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-02-18 23:31:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.25) 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) [2023-02-18 23:31:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-02-18 23:31:08,072 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2023-02-18 23:31:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:08,073 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-02-18 23:31:08,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-02-18 23:31:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 23:31:08,074 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:08,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:31:08,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 23:31:08,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:08,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:08,075 INFO L85 PathProgramCache]: Analyzing trace with hash -770242199, now seen corresponding path program 1 times [2023-02-18 23:31:08,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:08,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574901531] [2023-02-18 23:31:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:08,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 23:31:08,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:08,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574901531] [2023-02-18 23:31:08,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574901531] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 23:31:08,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 23:31:08,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 23:31:08,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767637419] [2023-02-18 23:31:08,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 23:31:08,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 23:31:08,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:08,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 23:31:08,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 23:31:08,105 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:08,120 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-02-18 23:31:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 23:31:08,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 23:31:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:08,121 INFO L225 Difference]: With dead ends: 25 [2023-02-18 23:31:08,122 INFO L226 Difference]: Without dead ends: 24 [2023-02-18 23:31:08,122 INFO L412 NwaCegarLoop]: 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 [2023-02-18 23:31:08,123 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 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 [2023-02-18 23:31:08,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:31:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-18 23:31:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-02-18 23:31:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-18 23:31:08,130 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2023-02-18 23:31:08,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:08,130 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-18 23:31:08,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-18 23:31:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 23:31:08,131 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:08,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 23:31:08,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 23:31:08,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:08,132 INFO L85 PathProgramCache]: Analyzing trace with hash -770240501, now seen corresponding path program 1 times [2023-02-18 23:31:08,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:08,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622747257] [2023-02-18 23:31:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:08,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:31:08,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:08,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622747257] [2023-02-18 23:31:08,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622747257] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:08,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264646918] [2023-02-18 23:31:08,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:08,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:08,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:08,183 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) [2023-02-18 23:31:08,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 23:31:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:08,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 23:31:08,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:31:08,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 23:31:08,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264646918] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:08,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:08,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-02-18 23:31:08,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115210832] [2023-02-18 23:31:08,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:08,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 23:31:08,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:08,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 23:31:08,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-02-18 23:31:08,290 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2023-02-18 23:31:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:08,353 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-02-18 23:31:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 23:31:08,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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 10 [2023-02-18 23:31:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:08,354 INFO L225 Difference]: With dead ends: 38 [2023-02-18 23:31:08,354 INFO L226 Difference]: Without dead ends: 22 [2023-02-18 23:31:08,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-18 23:31:08,355 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:08,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 23:31:08,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-18 23:31:08,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-02-18 23:31:08,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-02-18 23:31:08,359 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2023-02-18 23:31:08,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:08,359 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-02-18 23:31:08,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 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) [2023-02-18 23:31:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-02-18 23:31:08,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 23:31:08,360 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:08,360 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-18 23:31:08,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:08,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:08,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:08,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash -249756767, now seen corresponding path program 1 times [2023-02-18 23:31:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:08,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747946181] [2023-02-18 23:31:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:08,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 23:31:08,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:08,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747946181] [2023-02-18 23:31:08,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747946181] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:08,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350603593] [2023-02-18 23:31:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:08,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:08,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:08,622 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) [2023-02-18 23:31:08,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 23:31:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:08,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 23:31:08,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 23:31:08,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 23:31:08,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350603593] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:08,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:08,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-18 23:31:08,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189479484] [2023-02-18 23:31:08,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:08,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 23:31:08,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:08,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 23:31:08,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-18 23:31:08,719 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:08,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:08,768 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2023-02-18 23:31:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 23:31:08,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-18 23:31:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:08,771 INFO L225 Difference]: With dead ends: 52 [2023-02-18 23:31:08,771 INFO L226 Difference]: Without dead ends: 51 [2023-02-18 23:31:08,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-18 23:31:08,773 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:08,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:31:08,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-18 23:31:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2023-02-18 23:31:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 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) [2023-02-18 23:31:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2023-02-18 23:31:08,787 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 17 [2023-02-18 23:31:08,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:08,787 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2023-02-18 23:31:08,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2023-02-18 23:31:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 23:31:08,788 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:08,788 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:31:08,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:08,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-18 23:31:08,994 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:08,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:08,994 INFO L85 PathProgramCache]: Analyzing trace with hash -249755069, now seen corresponding path program 1 times [2023-02-18 23:31:08,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:08,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654705381] [2023-02-18 23:31:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:08,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 23:31:09,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:09,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654705381] [2023-02-18 23:31:09,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654705381] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:09,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672982788] [2023-02-18 23:31:09,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:09,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:09,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:09,050 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) [2023-02-18 23:31:09,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 23:31:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:09,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 23:31:09,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 23:31:09,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 23:31:09,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672982788] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:09,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:09,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-02-18 23:31:09,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969293942] [2023-02-18 23:31:09,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:09,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 23:31:09,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:09,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 23:31:09,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-02-18 23:31:09,178 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 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) [2023-02-18 23:31:09,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:09,475 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2023-02-18 23:31:09,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 23:31:09,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 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 17 [2023-02-18 23:31:09,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:09,478 INFO L225 Difference]: With dead ends: 70 [2023-02-18 23:31:09,478 INFO L226 Difference]: Without dead ends: 69 [2023-02-18 23:31:09,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=284, Invalid=838, Unknown=0, NotChecked=0, Total=1122 [2023-02-18 23:31:09,479 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 54 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:09,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 17 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 23:31:09,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-18 23:31:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2023-02-18 23:31:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 59 states have internal predecessors, (71), 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) [2023-02-18 23:31:09,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-02-18 23:31:09,485 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 17 [2023-02-18 23:31:09,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:09,485 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-02-18 23:31:09,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 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) [2023-02-18 23:31:09,486 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-02-18 23:31:09,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 23:31:09,486 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:09,487 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 23:31:09,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:09,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:09,691 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:09,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:09,692 INFO L85 PathProgramCache]: Analyzing trace with hash 461482147, now seen corresponding path program 2 times [2023-02-18 23:31:09,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:09,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524434237] [2023-02-18 23:31:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:09,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 23:31:09,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:09,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524434237] [2023-02-18 23:31:09,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524434237] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:09,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064821278] [2023-02-18 23:31:09,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 23:31:09,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:09,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:09,781 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) [2023-02-18 23:31:09,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 23:31:09,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 23:31:09,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:09,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 23:31:09,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 23:31:09,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 23:31:09,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064821278] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:09,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:09,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-02-18 23:31:09,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283559671] [2023-02-18 23:31:09,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:09,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-18 23:31:09,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-18 23:31:09,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-02-18 23:31:09,930 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 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) [2023-02-18 23:31:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:10,242 INFO L93 Difference]: Finished difference Result 108 states and 127 transitions. [2023-02-18 23:31:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 23:31:10,243 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 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 23 [2023-02-18 23:31:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:10,243 INFO L225 Difference]: With dead ends: 108 [2023-02-18 23:31:10,243 INFO L226 Difference]: Without dead ends: 66 [2023-02-18 23:31:10,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=398, Invalid=1408, Unknown=0, NotChecked=0, Total=1806 [2023-02-18 23:31:10,245 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:10,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 18 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 23:31:10,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-18 23:31:10,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2023-02-18 23:31:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 44 states have internal predecessors, (49), 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) [2023-02-18 23:31:10,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-02-18 23:31:10,252 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 23 [2023-02-18 23:31:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:10,252 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-02-18 23:31:10,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 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) [2023-02-18 23:31:10,252 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-02-18 23:31:10,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-18 23:31:10,253 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:10,253 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2023-02-18 23:31:10,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:10,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:10,454 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:10,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1026452329, now seen corresponding path program 2 times [2023-02-18 23:31:10,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:10,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912569968] [2023-02-18 23:31:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:10,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-02-18 23:31:10,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:10,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912569968] [2023-02-18 23:31:10,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912569968] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:10,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98458723] [2023-02-18 23:31:10,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 23:31:10,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:10,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:10,506 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) [2023-02-18 23:31:10,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 23:31:10,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 23:31:10,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:10,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 23:31:10,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:10,539 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-02-18 23:31:10,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-02-18 23:31:10,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98458723] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:10,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:10,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-02-18 23:31:10,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450834359] [2023-02-18 23:31:10,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:10,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 23:31:10,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:10,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 23:31:10,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 23:31:10,555 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-02-18 23:31:10,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:10,570 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2023-02-18 23:31:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 23:31:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 38 [2023-02-18 23:31:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:10,571 INFO L225 Difference]: With dead ends: 45 [2023-02-18 23:31:10,571 INFO L226 Difference]: Without dead ends: 44 [2023-02-18 23:31:10,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 23:31:10,573 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 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 [2023-02-18 23:31:10,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 23:31:10,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-18 23:31:10,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2023-02-18 23:31:10,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 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) [2023-02-18 23:31:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-02-18 23:31:10,581 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 38 [2023-02-18 23:31:10,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:10,582 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-02-18 23:31:10,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-02-18 23:31:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-02-18 23:31:10,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-18 23:31:10,582 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:10,582 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 1, 1, 1, 1] [2023-02-18 23:31:10,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:10,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:10,783 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1026454027, now seen corresponding path program 3 times [2023-02-18 23:31:10,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:10,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659650417] [2023-02-18 23:31:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:10,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 23:31:10,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:10,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659650417] [2023-02-18 23:31:10,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659650417] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:10,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284349904] [2023-02-18 23:31:10,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 23:31:10,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:10,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:10,848 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) [2023-02-18 23:31:10,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 23:31:10,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-18 23:31:10,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:10,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 23:31:10,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 23:31:10,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 23:31:10,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284349904] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:10,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:10,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-02-18 23:31:10,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014527562] [2023-02-18 23:31:10,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:10,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 23:31:10,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:10,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 23:31:10,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2023-02-18 23:31:10,987 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:11,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:11,574 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2023-02-18 23:31:11,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-02-18 23:31:11,575 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-18 23:31:11,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:11,575 INFO L225 Difference]: With dead ends: 163 [2023-02-18 23:31:11,576 INFO L226 Difference]: Without dead ends: 162 [2023-02-18 23:31:11,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2541 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1705, Invalid=5101, Unknown=0, NotChecked=0, Total=6806 [2023-02-18 23:31:11,578 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 129 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:11,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 20 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 23:31:11,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-18 23:31:11,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 112. [2023-02-18 23:31:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1981981981981982) internal successors, (133), 111 states have internal predecessors, (133), 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) [2023-02-18 23:31:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2023-02-18 23:31:11,585 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 38 [2023-02-18 23:31:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:11,585 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2023-02-18 23:31:11,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 23:31:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2023-02-18 23:31:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-18 23:31:11,586 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:11,586 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 4, 4, 4, 1, 1, 1, 1] [2023-02-18 23:31:11,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-18 23:31:11,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:11,790 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:11,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:11,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1283988075, now seen corresponding path program 4 times [2023-02-18 23:31:11,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:11,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938297643] [2023-02-18 23:31:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:11,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 65 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-18 23:31:11,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:11,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938297643] [2023-02-18 23:31:11,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938297643] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:11,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348829987] [2023-02-18 23:31:11,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 23:31:11,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:11,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:11,899 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) [2023-02-18 23:31:11,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 23:31:11,929 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 23:31:11,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:11,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 23:31:11,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 23:31:12,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 23:31:12,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348829987] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:12,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:12,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2023-02-18 23:31:12,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154240308] [2023-02-18 23:31:12,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:12,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 23:31:12,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:12,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 23:31:12,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 23:31:12,217 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand has 33 states, 33 states have (on average 3.8484848484848486) internal successors, (127), 33 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) [2023-02-18 23:31:15,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:15,768 INFO L93 Difference]: Finished difference Result 915 states and 1117 transitions. [2023-02-18 23:31:15,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2023-02-18 23:31:15,769 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.8484848484848486) internal successors, (127), 33 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) Word has length 44 [2023-02-18 23:31:15,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:15,772 INFO L225 Difference]: With dead ends: 915 [2023-02-18 23:31:15,772 INFO L226 Difference]: Without dead ends: 845 [2023-02-18 23:31:15,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17643 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6285, Invalid=38025, Unknown=0, NotChecked=0, Total=44310 [2023-02-18 23:31:15,781 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 867 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:15,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 27 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 23:31:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-02-18 23:31:15,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 251. [2023-02-18 23:31:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.184) internal successors, (296), 250 states have internal predecessors, (296), 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) [2023-02-18 23:31:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 296 transitions. [2023-02-18 23:31:15,803 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 296 transitions. Word has length 44 [2023-02-18 23:31:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:15,803 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 296 transitions. [2023-02-18 23:31:15,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.8484848484848486) internal successors, (127), 33 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) [2023-02-18 23:31:15,804 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 296 transitions. [2023-02-18 23:31:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-18 23:31:15,805 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:15,805 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 6, 5, 5, 5, 1, 1, 1, 1] [2023-02-18 23:31:15,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:16,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:16,010 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:16,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:16,010 INFO L85 PathProgramCache]: Analyzing trace with hash 110001538, now seen corresponding path program 5 times [2023-02-18 23:31:16,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:16,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193210473] [2023-02-18 23:31:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:16,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 30 proven. 265 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 23:31:16,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:16,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193210473] [2023-02-18 23:31:16,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193210473] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:16,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742725228] [2023-02-18 23:31:16,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 23:31:16,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:16,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:16,200 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) [2023-02-18 23:31:16,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 23:31:16,232 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-02-18 23:31:16,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:16,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 23:31:16,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:16,419 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 129 proven. 165 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 23:31:16,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 84 proven. 210 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 23:31:16,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742725228] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:16,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:16,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2023-02-18 23:31:16,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892275743] [2023-02-18 23:31:16,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:16,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-18 23:31:16,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-18 23:31:16,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1578, Unknown=0, NotChecked=0, Total=1806 [2023-02-18 23:31:16,680 INFO L87 Difference]: Start difference. First operand 251 states and 296 transitions. Second operand has 43 states, 43 states have (on average 3.2790697674418605) internal successors, (141), 43 states have internal predecessors, (141), 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) [2023-02-18 23:31:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:17,854 INFO L93 Difference]: Finished difference Result 887 states and 1065 transitions. [2023-02-18 23:31:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-02-18 23:31:17,854 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.2790697674418605) internal successors, (141), 43 states have internal predecessors, (141), 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 60 [2023-02-18 23:31:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:17,856 INFO L225 Difference]: With dead ends: 887 [2023-02-18 23:31:17,856 INFO L226 Difference]: Without dead ends: 689 [2023-02-18 23:31:17,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1713, Invalid=7029, Unknown=0, NotChecked=0, Total=8742 [2023-02-18 23:31:17,858 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 240 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:17,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 30 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 23:31:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-02-18 23:31:17,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 628. [2023-02-18 23:31:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.1993620414673045) internal successors, (752), 627 states have internal predecessors, (752), 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) [2023-02-18 23:31:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 752 transitions. [2023-02-18 23:31:17,894 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 752 transitions. Word has length 60 [2023-02-18 23:31:17,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:17,895 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 752 transitions. [2023-02-18 23:31:17,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.2790697674418605) internal successors, (141), 43 states have internal predecessors, (141), 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) [2023-02-18 23:31:17,895 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 752 transitions. [2023-02-18 23:31:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-18 23:31:17,897 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:17,897 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 6, 5, 5, 5, 1, 1, 1, 1] [2023-02-18 23:31:17,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-18 23:31:18,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-18 23:31:18,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1561347668, now seen corresponding path program 6 times [2023-02-18 23:31:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:18,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907868175] [2023-02-18 23:31:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:18,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 26 proven. 325 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-18 23:31:18,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:18,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907868175] [2023-02-18 23:31:18,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907868175] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:18,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348482213] [2023-02-18 23:31:18,223 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 23:31:18,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:18,224 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) [2023-02-18 23:31:18,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 23:31:18,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-02-18 23:31:18,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:18,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 23:31:18,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-18 23:31:18,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 18 proven. 320 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-18 23:31:18,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348482213] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:18,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:18,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2023-02-18 23:31:18,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848886325] [2023-02-18 23:31:18,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:18,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-18 23:31:18,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:18,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-18 23:31:18,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2023-02-18 23:31:18,574 INFO L87 Difference]: Start difference. First operand 628 states and 752 transitions. Second operand has 35 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 35 states have internal predecessors, (136), 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) [2023-02-18 23:31:20,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:20,024 INFO L93 Difference]: Finished difference Result 1792 states and 2140 transitions. [2023-02-18 23:31:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-02-18 23:31:20,024 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 35 states have internal predecessors, (136), 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 66 [2023-02-18 23:31:20,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:20,026 INFO L225 Difference]: With dead ends: 1792 [2023-02-18 23:31:20,026 INFO L226 Difference]: Without dead ends: 616 [2023-02-18 23:31:20,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3289 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2203, Invalid=9139, Unknown=0, NotChecked=0, Total=11342 [2023-02-18 23:31:20,030 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 526 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:20,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 25 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 23:31:20,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2023-02-18 23:31:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 543. [2023-02-18 23:31:20,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 542 states have (on average 1.1937269372693726) internal successors, (647), 542 states have internal predecessors, (647), 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) [2023-02-18 23:31:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 647 transitions. [2023-02-18 23:31:20,062 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 647 transitions. Word has length 66 [2023-02-18 23:31:20,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:20,063 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 647 transitions. [2023-02-18 23:31:20,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 35 states have internal predecessors, (136), 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) [2023-02-18 23:31:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 647 transitions. [2023-02-18 23:31:20,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-18 23:31:20,064 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:20,065 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 7, 6, 6, 6, 1, 1, 1, 1] [2023-02-18 23:31:20,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:20,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-18 23:31:20,269 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:20,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:20,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1270477891, now seen corresponding path program 7 times [2023-02-18 23:31:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:20,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263902650] [2023-02-18 23:31:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:20,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 283 proven. 112 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-02-18 23:31:20,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:20,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263902650] [2023-02-18 23:31:20,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263902650] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:20,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960030620] [2023-02-18 23:31:20,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 23:31:20,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:20,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:20,385 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) [2023-02-18 23:31:20,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 23:31:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:20,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 23:31:20,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 302 proven. 93 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-02-18 23:31:20,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:20,616 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 283 proven. 112 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-02-18 23:31:20,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960030620] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:20,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:20,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2023-02-18 23:31:20,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408044822] [2023-02-18 23:31:20,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:20,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 23:31:20,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 23:31:20,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-02-18 23:31:20,618 INFO L87 Difference]: Start difference. First operand 543 states and 647 transitions. Second operand has 28 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 28 states have internal predecessors, (97), 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) [2023-02-18 23:31:21,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:21,034 INFO L93 Difference]: Finished difference Result 988 states and 1173 transitions. [2023-02-18 23:31:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-18 23:31:21,034 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 28 states have internal predecessors, (97), 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 76 [2023-02-18 23:31:21,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:21,036 INFO L225 Difference]: With dead ends: 988 [2023-02-18 23:31:21,036 INFO L226 Difference]: Without dead ends: 574 [2023-02-18 23:31:21,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 131 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=740, Invalid=2566, Unknown=0, NotChecked=0, Total=3306 [2023-02-18 23:31:21,038 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 110 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:21,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 16 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 23:31:21,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-02-18 23:31:21,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 536. [2023-02-18 23:31:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.1775700934579438) internal successors, (630), 535 states have internal predecessors, (630), 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) [2023-02-18 23:31:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 630 transitions. [2023-02-18 23:31:21,077 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 630 transitions. Word has length 76 [2023-02-18 23:31:21,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:21,077 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 630 transitions. [2023-02-18 23:31:21,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.4642857142857144) internal successors, (97), 28 states have internal predecessors, (97), 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) [2023-02-18 23:31:21,078 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 630 transitions. [2023-02-18 23:31:21,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-02-18 23:31:21,079 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:21,079 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 7, 6, 6, 6, 1, 1, 1, 1] [2023-02-18 23:31:21,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:21,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-18 23:31:21,283 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:21,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1458865890, now seen corresponding path program 8 times [2023-02-18 23:31:21,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:21,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548705386] [2023-02-18 23:31:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:21,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 482 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-02-18 23:31:21,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:21,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548705386] [2023-02-18 23:31:21,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548705386] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:21,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823723437] [2023-02-18 23:31:21,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 23:31:21,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:21,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:21,461 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) [2023-02-18 23:31:21,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 23:31:21,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 23:31:21,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:21,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 23:31:21,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 523 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-18 23:31:21,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 1 proven. 522 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-18 23:31:21,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823723437] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:21,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:21,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 32 [2023-02-18 23:31:21,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828161797] [2023-02-18 23:31:21,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:21,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 23:31:21,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:21,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 23:31:21,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 23:31:21,790 INFO L87 Difference]: Start difference. First operand 536 states and 630 transitions. Second operand has 33 states, 32 states have (on average 4.46875) internal successors, (143), 33 states have internal predecessors, (143), 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) [2023-02-18 23:31:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:25,466 INFO L93 Difference]: Finished difference Result 2085 states and 2451 transitions. [2023-02-18 23:31:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-02-18 23:31:25,467 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 4.46875) internal successors, (143), 33 states have internal predecessors, (143), 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 [2023-02-18 23:31:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:25,473 INFO L225 Difference]: With dead ends: 2085 [2023-02-18 23:31:25,473 INFO L226 Difference]: Without dead ends: 2084 [2023-02-18 23:31:25,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25436 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=11094, Invalid=43896, Unknown=0, NotChecked=0, Total=54990 [2023-02-18 23:31:25,478 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 364 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:25,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 25 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 23:31:25,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2023-02-18 23:31:25,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 910. [2023-02-18 23:31:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 1.1826182618261827) internal successors, (1075), 909 states have internal predecessors, (1075), 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) [2023-02-18 23:31:25,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1075 transitions. [2023-02-18 23:31:25,573 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1075 transitions. Word has length 79 [2023-02-18 23:31:25,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:25,574 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1075 transitions. [2023-02-18 23:31:25,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 4.46875) internal successors, (143), 33 states have internal predecessors, (143), 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) [2023-02-18 23:31:25,574 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1075 transitions. [2023-02-18 23:31:25,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-18 23:31:25,575 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:25,575 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 1, 1, 1, 1] [2023-02-18 23:31:25,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:25,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-18 23:31:25,779 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:25,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash -775133941, now seen corresponding path program 9 times [2023-02-18 23:31:25,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:25,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915639045] [2023-02-18 23:31:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:25,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 23:31:25,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:25,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915639045] [2023-02-18 23:31:25,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915639045] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:25,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142088721] [2023-02-18 23:31:25,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 23:31:25,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:25,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:25,893 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) [2023-02-18 23:31:25,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 23:31:25,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-02-18 23:31:25,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:25,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 23:31:25,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 23:31:26,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 23:31:26,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142088721] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:26,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:26,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-02-18 23:31:26,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648725603] [2023-02-18 23:31:26,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:26,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 23:31:26,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 23:31:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 23:31:26,194 INFO L87 Difference]: Start difference. First operand 910 states and 1075 transitions. Second operand has 33 states, 32 states have (on average 5.15625) internal successors, (165), 33 states have internal predecessors, (165), 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) [2023-02-18 23:31:28,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:28,787 INFO L93 Difference]: Finished difference Result 6549 states and 7821 transitions. [2023-02-18 23:31:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2023-02-18 23:31:28,788 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.15625) internal successors, (165), 33 states have internal predecessors, (165), 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 80 [2023-02-18 23:31:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:28,802 INFO L225 Difference]: With dead ends: 6549 [2023-02-18 23:31:28,803 INFO L226 Difference]: Without dead ends: 6548 [2023-02-18 23:31:28,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 132 SyntacticMatches, 10 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13150 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=7558, Invalid=23242, Unknown=0, NotChecked=0, Total=30800 [2023-02-18 23:31:28,806 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 254 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:28,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 31 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 23:31:28,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2023-02-18 23:31:29,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 3033. [2023-02-18 23:31:29,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 3032 states have (on average 1.187005277044855) internal successors, (3599), 3032 states have internal predecessors, (3599), 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) [2023-02-18 23:31:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 3599 transitions. [2023-02-18 23:31:29,061 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 3599 transitions. Word has length 80 [2023-02-18 23:31:29,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:29,061 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 3599 transitions. [2023-02-18 23:31:29,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.15625) internal successors, (165), 33 states have internal predecessors, (165), 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) [2023-02-18 23:31:29,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 3599 transitions. [2023-02-18 23:31:29,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-18 23:31:29,063 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:29,063 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 11, 10, 10, 10, 1, 1, 1, 1] [2023-02-18 23:31:29,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-02-18 23:31:29,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-18 23:31:29,268 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:29,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1074429624, now seen corresponding path program 10 times [2023-02-18 23:31:29,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:29,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45800904] [2023-02-18 23:31:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:29,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 227 proven. 518 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-02-18 23:31:29,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:29,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45800904] [2023-02-18 23:31:29,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45800904] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:29,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462480052] [2023-02-18 23:31:29,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 23:31:29,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:29,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:29,443 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:31:29,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 23:31:29,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 23:31:29,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:29,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 23:31:29,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 300 proven. 51 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2023-02-18 23:31:29,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 303 proven. 48 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2023-02-18 23:31:29,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462480052] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:29,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:29,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 39 [2023-02-18 23:31:29,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166247983] [2023-02-18 23:31:29,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:29,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-18 23:31:29,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:29,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-18 23:31:29,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2023-02-18 23:31:29,786 INFO L87 Difference]: Start difference. First operand 3033 states and 3599 transitions. Second operand has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 39 states have internal predecessors, (139), 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) [2023-02-18 23:31:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:32,142 INFO L93 Difference]: Finished difference Result 4930 states and 5838 transitions. [2023-02-18 23:31:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-02-18 23:31:32,142 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 39 states have internal predecessors, (139), 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 95 [2023-02-18 23:31:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:32,149 INFO L225 Difference]: With dead ends: 4930 [2023-02-18 23:31:32,149 INFO L226 Difference]: Without dead ends: 3079 [2023-02-18 23:31:32,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5308 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3122, Invalid=16338, Unknown=0, NotChecked=0, Total=19460 [2023-02-18 23:31:32,152 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 320 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:32,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 24 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 23:31:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2023-02-18 23:31:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 2642. [2023-02-18 23:31:32,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2641 states have (on average 1.1541082923135175) internal successors, (3048), 2641 states have internal predecessors, (3048), 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) [2023-02-18 23:31:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3048 transitions. [2023-02-18 23:31:32,438 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3048 transitions. Word has length 95 [2023-02-18 23:31:32,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:32,439 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 3048 transitions. [2023-02-18 23:31:32,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.5641025641025643) internal successors, (139), 39 states have internal predecessors, (139), 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) [2023-02-18 23:31:32,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3048 transitions. [2023-02-18 23:31:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-02-18 23:31:32,442 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:32,442 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 12, 11, 11, 11, 1, 1, 1, 1] [2023-02-18 23:31:32,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:32,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-18 23:31:32,647 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:32,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:32,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1143389319, now seen corresponding path program 11 times [2023-02-18 23:31:32,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:32,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961991271] [2023-02-18 23:31:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:32,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 0 proven. 767 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-02-18 23:31:32,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:32,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961991271] [2023-02-18 23:31:32,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961991271] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:32,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027657074] [2023-02-18 23:31:32,775 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 23:31:32,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:32,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:32,790 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:31:32,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 23:31:32,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-02-18 23:31:32,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:32,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 23:31:32,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 173 proven. 751 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-18 23:31:33,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 129 proven. 795 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-18 23:31:33,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027657074] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:33,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:33,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 21] total 46 [2023-02-18 23:31:33,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593841126] [2023-02-18 23:31:33,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:33,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-18 23:31:33,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:33,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-18 23:31:33,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1837, Unknown=0, NotChecked=0, Total=2070 [2023-02-18 23:31:33,392 INFO L87 Difference]: Start difference. First operand 2642 states and 3048 transitions. Second operand has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 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) [2023-02-18 23:31:36,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:36,354 INFO L93 Difference]: Finished difference Result 5327 states and 6173 transitions. [2023-02-18 23:31:36,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-02-18 23:31:36,354 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 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 105 [2023-02-18 23:31:36,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:36,363 INFO L225 Difference]: With dead ends: 5327 [2023-02-18 23:31:36,363 INFO L226 Difference]: Without dead ends: 4167 [2023-02-18 23:31:36,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 171 SyntacticMatches, 7 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9679 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3555, Invalid=26201, Unknown=0, NotChecked=0, Total=29756 [2023-02-18 23:31:36,365 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 504 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:36,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 27 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 23:31:36,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2023-02-18 23:31:36,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 1920. [2023-02-18 23:31:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 1.1594580510682648) internal successors, (2225), 1919 states have internal predecessors, (2225), 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) [2023-02-18 23:31:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2225 transitions. [2023-02-18 23:31:36,663 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2225 transitions. Word has length 105 [2023-02-18 23:31:36,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:36,664 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2225 transitions. [2023-02-18 23:31:36,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 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) [2023-02-18 23:31:36,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2225 transitions. [2023-02-18 23:31:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-02-18 23:31:36,666 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:36,666 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 12, 11, 11, 11, 1, 1, 1, 1] [2023-02-18 23:31:36,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-02-18 23:31:36,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:36,873 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:36,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash -544946177, now seen corresponding path program 12 times [2023-02-18 23:31:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:36,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293632071] [2023-02-18 23:31:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:36,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 988 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-02-18 23:31:37,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:37,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293632071] [2023-02-18 23:31:37,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293632071] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:37,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219205509] [2023-02-18 23:31:37,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 23:31:37,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:37,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:37,097 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:31:37,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 23:31:37,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-02-18 23:31:37,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:37,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 23:31:37,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 176 proven. 708 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2023-02-18 23:31:37,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 18 proven. 866 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2023-02-18 23:31:37,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219205509] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:37,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:37,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2023-02-18 23:31:37,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047664268] [2023-02-18 23:31:37,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:37,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-18 23:31:37,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:37,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-18 23:31:37,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1039, Unknown=0, NotChecked=0, Total=1260 [2023-02-18 23:31:37,466 INFO L87 Difference]: Start difference. First operand 1920 states and 2225 transitions. Second operand has 36 states, 35 states have (on average 4.457142857142857) internal successors, (156), 36 states have internal predecessors, (156), 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) [2023-02-18 23:31:43,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:43,478 INFO L93 Difference]: Finished difference Result 4018 states and 4719 transitions. [2023-02-18 23:31:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 316 states. [2023-02-18 23:31:43,479 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.457142857142857) internal successors, (156), 36 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-02-18 23:31:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:43,493 INFO L225 Difference]: With dead ends: 4018 [2023-02-18 23:31:43,493 INFO L226 Difference]: Without dead ends: 4017 [2023-02-18 23:31:43,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 208 SyntacticMatches, 5 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56019 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=20455, Invalid=94127, Unknown=0, NotChecked=0, Total=114582 [2023-02-18 23:31:43,499 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 516 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:43,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 22 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 23:31:43,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2023-02-18 23:31:43,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 1564. [2023-02-18 23:31:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1563 states have (on average 1.1669865642994242) internal successors, (1824), 1563 states have internal predecessors, (1824), 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) [2023-02-18 23:31:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 1824 transitions. [2023-02-18 23:31:43,754 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 1824 transitions. Word has length 117 [2023-02-18 23:31:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:43,754 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 1824 transitions. [2023-02-18 23:31:43,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.457142857142857) internal successors, (156), 36 states have internal predecessors, (156), 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) [2023-02-18 23:31:43,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 1824 transitions. [2023-02-18 23:31:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-02-18 23:31:43,756 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:43,757 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 16, 15, 15, 15, 1, 1, 1, 1] [2023-02-18 23:31:43,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:43,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:43,964 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:43,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:43,964 INFO L85 PathProgramCache]: Analyzing trace with hash 694191114, now seen corresponding path program 13 times [2023-02-18 23:31:43,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:43,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148288605] [2023-02-18 23:31:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:43,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 719 proven. 92 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2023-02-18 23:31:44,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:44,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148288605] [2023-02-18 23:31:44,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148288605] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:44,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371745826] [2023-02-18 23:31:44,122 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 23:31:44,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:44,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:44,123 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:31:44,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 23:31:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:44,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 23:31:44,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 1000 proven. 1034 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-02-18 23:31:44,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 949 proven. 1085 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-02-18 23:31:44,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371745826] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:44,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:44,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 22] total 47 [2023-02-18 23:31:44,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487046079] [2023-02-18 23:31:44,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:44,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-02-18 23:31:44,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-02-18 23:31:44,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1895, Unknown=0, NotChecked=0, Total=2162 [2023-02-18 23:31:44,758 INFO L87 Difference]: Start difference. First operand 1564 states and 1824 transitions. Second operand has 47 states, 47 states have (on average 4.340425531914893) internal successors, (204), 47 states have internal predecessors, (204), 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) [2023-02-18 23:31:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:31:48,811 INFO L93 Difference]: Finished difference Result 3116 states and 3638 transitions. [2023-02-18 23:31:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-02-18 23:31:48,812 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.340425531914893) internal successors, (204), 47 states have internal predecessors, (204), 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 154 [2023-02-18 23:31:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:31:48,816 INFO L225 Difference]: With dead ends: 3116 [2023-02-18 23:31:48,816 INFO L226 Difference]: Without dead ends: 2118 [2023-02-18 23:31:48,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 274 SyntacticMatches, 7 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14126 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=6823, Invalid=34183, Unknown=0, NotChecked=0, Total=41006 [2023-02-18 23:31:48,820 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 647 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 1997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 23:31:48,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 26 Invalid, 1997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 23:31:48,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2023-02-18 23:31:49,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1668. [2023-02-18 23:31:49,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1667 states have (on average 1.164367126574685) internal successors, (1941), 1667 states have internal predecessors, (1941), 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) [2023-02-18 23:31:49,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1941 transitions. [2023-02-18 23:31:49,164 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1941 transitions. Word has length 154 [2023-02-18 23:31:49,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:31:49,165 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 1941 transitions. [2023-02-18 23:31:49,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.340425531914893) internal successors, (204), 47 states have internal predecessors, (204), 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) [2023-02-18 23:31:49,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1941 transitions. [2023-02-18 23:31:49,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-02-18 23:31:49,167 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:31:49,167 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 22, 22, 22, 1, 1, 1, 1] [2023-02-18 23:31:49,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-18 23:31:49,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:49,372 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:31:49,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:31:49,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1772549365, now seen corresponding path program 14 times [2023-02-18 23:31:49,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:31:49,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209876712] [2023-02-18 23:31:49,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:31:49,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:31:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:31:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 23:31:49,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:31:49,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209876712] [2023-02-18 23:31:49,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209876712] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:31:49,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481212400] [2023-02-18 23:31:49,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 23:31:49,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:31:49,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:31:49,805 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:31:49,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-18 23:31:49,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 23:31:49,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:31:49,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-18 23:31:49,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:31:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 23:31:50,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:31:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 23:31:50,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481212400] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:31:50,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:31:50,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2023-02-18 23:31:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421629045] [2023-02-18 23:31:50,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:31:50,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-02-18 23:31:50,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:31:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-02-18 23:31:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=1986, Unknown=0, NotChecked=0, Total=3192 [2023-02-18 23:31:50,752 INFO L87 Difference]: Start difference. First operand 1668 states and 1941 transitions. Second operand has 57 states, 56 states have (on average 5.946428571428571) internal successors, (333), 57 states have internal predecessors, (333), 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) [2023-02-18 23:32:08,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:32:08,069 INFO L93 Difference]: Finished difference Result 31629 states and 37511 transitions. [2023-02-18 23:32:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 371 states. [2023-02-18 23:32:08,069 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.946428571428571) internal successors, (333), 57 states have internal predecessors, (333), 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 164 [2023-02-18 23:32:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:32:08,126 INFO L225 Difference]: With dead ends: 31629 [2023-02-18 23:32:08,127 INFO L226 Difference]: Without dead ends: 31628 [2023-02-18 23:32:08,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 276 SyntacticMatches, 22 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65819 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=34780, Invalid=109240, Unknown=0, NotChecked=0, Total=144020 [2023-02-18 23:32:08,139 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 636 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 23:32:08,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 55 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 23:32:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31628 states. [2023-02-18 23:32:08,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31628 to 4782. [2023-02-18 23:32:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 4781 states have (on average 1.1738130098305795) internal successors, (5612), 4781 states have internal predecessors, (5612), 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) [2023-02-18 23:32:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 5612 transitions. [2023-02-18 23:32:08,871 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 5612 transitions. Word has length 164 [2023-02-18 23:32:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:32:08,871 INFO L495 AbstractCegarLoop]: Abstraction has 4782 states and 5612 transitions. [2023-02-18 23:32:08,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.946428571428571) internal successors, (333), 57 states have internal predecessors, (333), 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) [2023-02-18 23:32:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 5612 transitions. [2023-02-18 23:32:08,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-02-18 23:32:08,874 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:32:08,874 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 36, 16, 15, 15, 15, 1, 1, 1, 1] [2023-02-18 23:32:08,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-18 23:32:09,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:32:09,079 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:32:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:32:09,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1878403147, now seen corresponding path program 15 times [2023-02-18 23:32:09,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:32:09,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175018288] [2023-02-18 23:32:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:32:09,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:32:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:32:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 736 proven. 2175 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-18 23:32:09,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:32:09,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175018288] [2023-02-18 23:32:09,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175018288] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:32:09,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39468760] [2023-02-18 23:32:09,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 23:32:09,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:32:09,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:32:09,593 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:32:09,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-18 23:32:09,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-18 23:32:09,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:32:09,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 23:32:09,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:32:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 1269 proven. 177 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2023-02-18 23:32:10,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:32:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 72 proven. 1374 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2023-02-18 23:32:10,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39468760] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:32:10,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:32:10,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 19, 19] total 65 [2023-02-18 23:32:10,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738120293] [2023-02-18 23:32:10,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:32:10,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-02-18 23:32:10,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:32:10,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-02-18 23:32:10,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=3792, Unknown=0, NotChecked=0, Total=4160 [2023-02-18 23:32:10,525 INFO L87 Difference]: Start difference. First operand 4782 states and 5612 transitions. Second operand has 65 states, 65 states have (on average 3.5846153846153848) internal successors, (233), 65 states have internal predecessors, (233), 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) [2023-02-18 23:32:24,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:32:24,046 INFO L93 Difference]: Finished difference Result 14834 states and 18355 transitions. [2023-02-18 23:32:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 341 states. [2023-02-18 23:32:24,046 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.5846153846153848) internal successors, (233), 65 states have internal predecessors, (233), 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 175 [2023-02-18 23:32:24,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:32:24,062 INFO L225 Difference]: With dead ends: 14834 [2023-02-18 23:32:24,063 INFO L226 Difference]: Without dead ends: 11099 [2023-02-18 23:32:24,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61625 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=20938, Invalid=141874, Unknown=0, NotChecked=0, Total=162812 [2023-02-18 23:32:24,075 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1572 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6363 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 6967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 6363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-18 23:32:24,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 39 Invalid, 6967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 6363 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-02-18 23:32:24,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2023-02-18 23:32:25,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 9322. [2023-02-18 23:32:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9322 states, 9321 states have (on average 1.2545864177663342) internal successors, (11694), 9321 states have internal predecessors, (11694), 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) [2023-02-18 23:32:25,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9322 states to 9322 states and 11694 transitions. [2023-02-18 23:32:25,545 INFO L78 Accepts]: Start accepts. Automaton has 9322 states and 11694 transitions. Word has length 175 [2023-02-18 23:32:25,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:32:25,545 INFO L495 AbstractCegarLoop]: Abstraction has 9322 states and 11694 transitions. [2023-02-18 23:32:25,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.5846153846153848) internal successors, (233), 65 states have internal predecessors, (233), 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) [2023-02-18 23:32:25,546 INFO L276 IsEmpty]: Start isEmpty. Operand 9322 states and 11694 transitions. [2023-02-18 23:32:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-02-18 23:32:25,551 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:32:25,551 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 32, 24, 23, 23, 23, 1, 1, 1, 1] [2023-02-18 23:32:25,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-02-18 23:32:25,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:32:25,756 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:32:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:32:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1422549621, now seen corresponding path program 16 times [2023-02-18 23:32:25,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:32:25,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236546591] [2023-02-18 23:32:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:32:25,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:32:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:32:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 0 proven. 2972 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2023-02-18 23:32:26,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:32:26,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236546591] [2023-02-18 23:32:26,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236546591] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:32:26,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890513349] [2023-02-18 23:32:26,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 23:32:26,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:32:26,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:32:26,049 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:32:26,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-18 23:32:26,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 23:32:26,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:32:26,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-18 23:32:26,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:32:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 224 proven. 2858 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-02-18 23:32:26,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:32:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 16 proven. 3066 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-02-18 23:32:26,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890513349] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:32:26,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:32:26,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 26] total 56 [2023-02-18 23:32:26,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349918786] [2023-02-18 23:32:26,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:32:26,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-02-18 23:32:26,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:32:26,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-02-18 23:32:26,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=790, Invalid=2402, Unknown=0, NotChecked=0, Total=3192 [2023-02-18 23:32:26,909 INFO L87 Difference]: Start difference. First operand 9322 states and 11694 transitions. Second operand has 57 states, 56 states have (on average 5.375) internal successors, (301), 57 states have internal predecessors, (301), 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) [2023-02-18 23:33:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:33:03,300 INFO L93 Difference]: Finished difference Result 62371 states and 81429 transitions. [2023-02-18 23:33:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 782 states. [2023-02-18 23:33:03,301 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.375) internal successors, (301), 57 states have internal predecessors, (301), 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 195 [2023-02-18 23:33:03,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:33:03,392 INFO L225 Difference]: With dead ends: 62371 [2023-02-18 23:33:03,392 INFO L226 Difference]: Without dead ends: 62370 [2023-02-18 23:33:03,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1183 GetRequests, 339 SyntacticMatches, 18 SemanticMatches, 826 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399686 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=156977, Invalid=527779, Unknown=0, NotChecked=0, Total=684756 [2023-02-18 23:33:03,435 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1240 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 855 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-18 23:33:03,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 24 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-18 23:33:03,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62370 states. [2023-02-18 23:33:09,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62370 to 18704. [2023-02-18 23:33:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18704 states, 18703 states have (on average 1.2170774742019996) internal successors, (22763), 18703 states have internal predecessors, (22763), 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) [2023-02-18 23:33:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18704 states to 18704 states and 22763 transitions. [2023-02-18 23:33:09,631 INFO L78 Accepts]: Start accepts. Automaton has 18704 states and 22763 transitions. Word has length 195 [2023-02-18 23:33:09,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:33:09,631 INFO L495 AbstractCegarLoop]: Abstraction has 18704 states and 22763 transitions. [2023-02-18 23:33:09,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.375) internal successors, (301), 57 states have internal predecessors, (301), 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) [2023-02-18 23:33:09,631 INFO L276 IsEmpty]: Start isEmpty. Operand 18704 states and 22763 transitions. [2023-02-18 23:33:09,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-02-18 23:33:09,649 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:33:09,649 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 56, 37, 36, 36, 36, 1, 1, 1, 1] [2023-02-18 23:33:09,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-18 23:33:09,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:33:09,853 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:33:09,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:33:09,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1730861666, now seen corresponding path program 17 times [2023-02-18 23:33:09,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:33:09,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560557719] [2023-02-18 23:33:09,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:33:09,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:33:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:33:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9396 backedges. 0 proven. 7677 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2023-02-18 23:33:10,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:33:10,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560557719] [2023-02-18 23:33:10,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560557719] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:33:10,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951469610] [2023-02-18 23:33:10,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 23:33:10,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:33:10,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:33:10,492 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:33:10,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-18 23:33:10,590 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2023-02-18 23:33:10,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:33:10,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 23:33:10,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:33:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9396 backedges. 5991 proven. 2825 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-02-18 23:33:11,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:33:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9396 backedges. 5819 proven. 2997 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-02-18 23:33:12,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951469610] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:33:12,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:33:12,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 39, 39] total 100 [2023-02-18 23:33:12,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118118898] [2023-02-18 23:33:12,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:33:12,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-02-18 23:33:12,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:33:12,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-02-18 23:33:12,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1438, Invalid=8462, Unknown=0, NotChecked=0, Total=9900 [2023-02-18 23:33:12,362 INFO L87 Difference]: Start difference. First operand 18704 states and 22763 transitions. Second operand has 100 states, 100 states have (on average 5.87) internal successors, (587), 100 states have internal predecessors, (587), 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) [2023-02-18 23:33:46,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:33:46,803 INFO L93 Difference]: Finished difference Result 37981 states and 45745 transitions. [2023-02-18 23:33:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 688 states. [2023-02-18 23:33:46,804 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 5.87) internal successors, (587), 100 states have internal predecessors, (587), 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 319 [2023-02-18 23:33:46,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:33:46,836 INFO L225 Difference]: With dead ends: 37981 [2023-02-18 23:33:46,836 INFO L226 Difference]: Without dead ends: 27343 [2023-02-18 23:33:46,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1371 GetRequests, 581 SyntacticMatches, 8 SemanticMatches, 782 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249282 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=49787, Invalid=564085, Unknown=0, NotChecked=0, Total=613872 [2023-02-18 23:33:46,883 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4351 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 10093 mSolverCounterSat, 1777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 11870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1777 IncrementalHoareTripleChecker+Valid, 10093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:33:46,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 28 Invalid, 11870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1777 Valid, 10093 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-02-18 23:33:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27343 states. [2023-02-18 23:33:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27343 to 21017. [2023-02-18 23:33:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21017 states, 21016 states have (on average 1.2051770079939095) internal successors, (25328), 21016 states have internal predecessors, (25328), 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) [2023-02-18 23:33:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21017 states to 21017 states and 25328 transitions. [2023-02-18 23:33:55,745 INFO L78 Accepts]: Start accepts. Automaton has 21017 states and 25328 transitions. Word has length 319 [2023-02-18 23:33:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:33:55,746 INFO L495 AbstractCegarLoop]: Abstraction has 21017 states and 25328 transitions. [2023-02-18 23:33:55,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 5.87) internal successors, (587), 100 states have internal predecessors, (587), 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) [2023-02-18 23:33:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 21017 states and 25328 transitions. [2023-02-18 23:33:55,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-02-18 23:33:55,767 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:33:55,767 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 46, 46, 46, 1, 1, 1, 1] [2023-02-18 23:33:55,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-18 23:33:55,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-02-18 23:33:55,972 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:33:55,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:33:55,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1611311349, now seen corresponding path program 18 times [2023-02-18 23:33:55,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:33:55,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420002868] [2023-02-18 23:33:55,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:33:55,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:33:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:33:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-02-18 23:33:57,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:33:57,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420002868] [2023-02-18 23:33:57,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420002868] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:33:57,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486312918] [2023-02-18 23:33:57,279 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 23:33:57,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:33:57,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:33:57,280 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:33:57,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-18 23:33:57,394 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 66 check-sat command(s) [2023-02-18 23:33:57,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:33:57,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-18 23:33:57,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:33:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-02-18 23:33:58,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:34:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-02-18 23:34:00,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486312918] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:34:00,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:34:00,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 104 [2023-02-18 23:34:00,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416705582] [2023-02-18 23:34:00,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:34:00,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-02-18 23:34:00,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:34:00,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-02-18 23:34:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4686, Invalid=6234, Unknown=0, NotChecked=0, Total=10920 [2023-02-18 23:34:00,276 INFO L87 Difference]: Start difference. First operand 21017 states and 25328 transitions. Second operand has 105 states, 104 states have (on average 6.4326923076923075) internal successors, (669), 105 states have internal predecessors, (669), 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) [2023-02-18 23:38:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:38:17,108 INFO L93 Difference]: Finished difference Result 623560 states and 766627 transitions. [2023-02-18 23:38:17,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 779 states. [2023-02-18 23:38:17,108 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 6.4326923076923075) internal successors, (669), 105 states have internal predecessors, (669), 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 332 [2023-02-18 23:38:17,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:38:18,388 INFO L225 Difference]: With dead ends: 623560 [2023-02-18 23:38:18,388 INFO L226 Difference]: Without dead ends: 623559 [2023-02-18 23:38:18,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1396 GetRequests, 564 SyntacticMatches, 46 SemanticMatches, 786 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292114 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=148408, Invalid=471748, Unknown=0, NotChecked=0, Total=620156 [2023-02-18 23:38:18,591 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 824 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-18 23:38:18,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 82 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-18 23:38:19,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623559 states. [2023-02-18 23:38:34,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623559 to 37334. [2023-02-18 23:38:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37334 states, 37333 states have (on average 1.2169126510058126) internal successors, (45431), 37333 states have internal predecessors, (45431), 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) [2023-02-18 23:38:34,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37334 states to 37334 states and 45431 transitions. [2023-02-18 23:38:34,280 INFO L78 Accepts]: Start accepts. Automaton has 37334 states and 45431 transitions. Word has length 332 [2023-02-18 23:38:34,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:38:34,281 INFO L495 AbstractCegarLoop]: Abstraction has 37334 states and 45431 transitions. [2023-02-18 23:38:34,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 6.4326923076923075) internal successors, (669), 105 states have internal predecessors, (669), 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) [2023-02-18 23:38:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 37334 states and 45431 transitions. [2023-02-18 23:38:34,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-02-18 23:38:34,308 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:38:34,308 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 62, 37, 36, 36, 36, 1, 1, 1, 1] [2023-02-18 23:38:34,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-18 23:38:34,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-02-18 23:38:34,514 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:38:34,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:38:34,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1291387804, now seen corresponding path program 19 times [2023-02-18 23:38:34,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:38:34,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424445554] [2023-02-18 23:38:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:38:34,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:38:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:38:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10683 backedges. 0 proven. 8181 refuted. 0 times theorem prover too weak. 2502 trivial. 0 not checked. [2023-02-18 23:38:35,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:38:35,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424445554] [2023-02-18 23:38:35,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424445554] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:38:35,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150404174] [2023-02-18 23:38:35,201 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 23:38:35,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:38:35,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:38:35,202 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:38:35,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-18 23:38:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:38:35,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 23:38:35,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:38:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10683 backedges. 6187 proven. 3573 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2023-02-18 23:38:36,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:38:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10683 backedges. 6024 proven. 3736 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2023-02-18 23:38:37,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150404174] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:38:37,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:38:37,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 39, 39] total 97 [2023-02-18 23:38:37,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392309737] [2023-02-18 23:38:37,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:38:37,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-02-18 23:38:37,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:38:37,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-02-18 23:38:37,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1316, Invalid=7996, Unknown=0, NotChecked=0, Total=9312 [2023-02-18 23:38:37,029 INFO L87 Difference]: Start difference. First operand 37334 states and 45431 transitions. Second operand has 97 states, 97 states have (on average 5.855670103092783) internal successors, (568), 97 states have internal predecessors, (568), 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) [2023-02-18 23:39:12,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:39:12,293 INFO L93 Difference]: Finished difference Result 65896 states and 80328 transitions. [2023-02-18 23:39:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 637 states. [2023-02-18 23:39:12,293 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 5.855670103092783) internal successors, (568), 97 states have internal predecessors, (568), 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 337 [2023-02-18 23:39:12,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:39:12,340 INFO L225 Difference]: With dead ends: 65896 [2023-02-18 23:39:12,340 INFO L226 Difference]: Without dead ends: 41845 [2023-02-18 23:39:12,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 599 SyntacticMatches, 10 SemanticMatches, 727 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214382 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=43381, Invalid=487331, Unknown=0, NotChecked=0, Total=530712 [2023-02-18 23:39:12,382 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3159 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 10025 mSolverCounterSat, 1374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3159 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 11399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1374 IncrementalHoareTripleChecker+Valid, 10025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-02-18 23:39:12,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3159 Valid, 32 Invalid, 11399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1374 Valid, 10025 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-02-18 23:39:12,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41845 states. [2023-02-18 23:39:25,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41845 to 38244. [2023-02-18 23:39:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38244 states, 38243 states have (on average 1.207253615040661) internal successors, (46169), 38243 states have internal predecessors, (46169), 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) [2023-02-18 23:39:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38244 states to 38244 states and 46169 transitions. [2023-02-18 23:39:25,432 INFO L78 Accepts]: Start accepts. Automaton has 38244 states and 46169 transitions. Word has length 337 [2023-02-18 23:39:25,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:39:25,433 INFO L495 AbstractCegarLoop]: Abstraction has 38244 states and 46169 transitions. [2023-02-18 23:39:25,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 5.855670103092783) internal successors, (568), 97 states have internal predecessors, (568), 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) [2023-02-18 23:39:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 38244 states and 46169 transitions. [2023-02-18 23:39:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-02-18 23:39:25,451 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:39:25,451 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 69, 37, 36, 36, 36, 1, 1, 1, 1] [2023-02-18 23:39:25,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-02-18 23:39:25,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-02-18 23:39:25,652 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:39:25,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:39:25,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1720307217, now seen corresponding path program 20 times [2023-02-18 23:39:25,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:39:25,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442435501] [2023-02-18 23:39:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:39:25,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:39:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:39:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 0 proven. 8373 refuted. 0 times theorem prover too weak. 3948 trivial. 0 not checked. [2023-02-18 23:39:26,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:39:26,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442435501] [2023-02-18 23:39:26,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442435501] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:39:26,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621532498] [2023-02-18 23:39:26,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 23:39:26,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:39:26,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:39:26,181 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:39:26,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-02-18 23:39:26,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 23:39:26,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:39:26,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-18 23:39:26,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:39:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 6364 proven. 4505 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2023-02-18 23:39:27,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:39:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12321 backedges. 6249 proven. 4620 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2023-02-18 23:39:27,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621532498] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:39:27,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:39:27,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 38, 38] total 88 [2023-02-18 23:39:27,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053313106] [2023-02-18 23:39:27,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:39:27,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-02-18 23:39:27,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:39:27,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-02-18 23:39:27,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=906, Invalid=6750, Unknown=0, NotChecked=0, Total=7656 [2023-02-18 23:39:27,903 INFO L87 Difference]: Start difference. First operand 38244 states and 46169 transitions. Second operand has 88 states, 88 states have (on average 5.681818181818182) internal successors, (500), 88 states have internal predecessors, (500), 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) [2023-02-18 23:39:57,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:39:57,716 INFO L93 Difference]: Finished difference Result 49835 states and 60055 transitions. [2023-02-18 23:39:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 431 states. [2023-02-18 23:39:57,717 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 5.681818181818182) internal successors, (500), 88 states have internal predecessors, (500), 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 358 [2023-02-18 23:39:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:39:57,758 INFO L225 Difference]: With dead ends: 49835 [2023-02-18 23:39:57,758 INFO L226 Difference]: Without dead ends: 40862 [2023-02-18 23:39:57,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 643 SyntacticMatches, 15 SemanticMatches, 512 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101900 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=26116, Invalid=237566, Unknown=0, NotChecked=0, Total=263682 [2023-02-18 23:39:57,781 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2492 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 6724 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2492 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 7760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 6724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-02-18 23:39:57,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2492 Valid, 29 Invalid, 7760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 6724 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-02-18 23:39:57,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40862 states. [2023-02-18 23:40:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40862 to 38704. [2023-02-18 23:40:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38704 states, 38703 states have (on average 1.2066506472366483) internal successors, (46701), 38703 states have internal predecessors, (46701), 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) [2023-02-18 23:40:12,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38704 states to 38704 states and 46701 transitions. [2023-02-18 23:40:12,119 INFO L78 Accepts]: Start accepts. Automaton has 38704 states and 46701 transitions. Word has length 358 [2023-02-18 23:40:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 23:40:12,119 INFO L495 AbstractCegarLoop]: Abstraction has 38704 states and 46701 transitions. [2023-02-18 23:40:12,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 5.681818181818182) internal successors, (500), 88 states have internal predecessors, (500), 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) [2023-02-18 23:40:12,119 INFO L276 IsEmpty]: Start isEmpty. Operand 38704 states and 46701 transitions. [2023-02-18 23:40:12,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-02-18 23:40:12,140 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 23:40:12,140 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 79, 43, 42, 42, 42, 1, 1, 1, 1] [2023-02-18 23:40:12,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-02-18 23:40:12,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:40:12,340 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-18 23:40:12,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 23:40:12,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1005103507, now seen corresponding path program 21 times [2023-02-18 23:40:12,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 23:40:12,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391499589] [2023-02-18 23:40:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 23:40:12,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 23:40:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 23:40:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16326 backedges. 0 proven. 10636 refuted. 0 times theorem prover too weak. 5690 trivial. 0 not checked. [2023-02-18 23:40:12,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 23:40:12,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391499589] [2023-02-18 23:40:12,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391499589] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 23:40:12,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608665124] [2023-02-18 23:40:12,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 23:40:12,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 23:40:12,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 23:40:12,991 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 23:40:12,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-02-18 23:40:13,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-18 23:40:13,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 23:40:13,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 23:40:13,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 23:40:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 16326 backedges. 4707 proven. 468 refuted. 0 times theorem prover too weak. 11151 trivial. 0 not checked. [2023-02-18 23:40:13,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 23:40:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16326 backedges. 4707 proven. 468 refuted. 0 times theorem prover too weak. 11151 trivial. 0 not checked. [2023-02-18 23:40:13,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608665124] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 23:40:13,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 23:40:13,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 16, 16] total 62 [2023-02-18 23:40:13,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891472078] [2023-02-18 23:40:13,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 23:40:13,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-02-18 23:40:13,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 23:40:13,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-02-18 23:40:13,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=3341, Unknown=0, NotChecked=0, Total=3906 [2023-02-18 23:40:13,757 INFO L87 Difference]: Start difference. First operand 38704 states and 46701 transitions. Second operand has 63 states, 62 states have (on average 4.532258064516129) internal successors, (281), 63 states have internal predecessors, (281), 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) [2023-02-18 23:44:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 23:44:34,073 INFO L93 Difference]: Finished difference Result 463099 states and 571116 transitions. [2023-02-18 23:44:34,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 804 states. [2023-02-18 23:44:34,073 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 4.532258064516129) internal successors, (281), 63 states have internal predecessors, (281), 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 412 [2023-02-18 23:44:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 23:44:35,078 INFO L225 Difference]: With dead ends: 463099 [2023-02-18 23:44:35,079 INFO L226 Difference]: Without dead ends: 463098 [2023-02-18 23:44:35,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1667 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 857 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370752 ImplicationChecksByTransitivity, 57.4s TimeCoverageRelationStatistics Valid=122978, Invalid=614044, Unknown=0, NotChecked=0, Total=737022 [2023-02-18 23:44:35,230 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 7055 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 3797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7055 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 5955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3797 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-18 23:44:35,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7055 Valid, 26 Invalid, 5955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3797 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-18 23:44:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463098 states.