./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 26d01a9c 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-?-26d01a9 [2023-02-18 08:12:27,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 08:12:27,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 08:12:27,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 08:12:27,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 08:12:27,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 08:12:27,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 08:12:27,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 08:12:27,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 08:12:27,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 08:12:27,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 08:12:27,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 08:12:27,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 08:12:27,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 08:12:27,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 08:12:27,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 08:12:27,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 08:12:27,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 08:12:27,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 08:12:27,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 08:12:27,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 08:12:27,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 08:12:27,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 08:12:27,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 08:12:27,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 08:12:27,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 08:12:27,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 08:12:27,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 08:12:27,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 08:12:27,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 08:12:27,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 08:12:27,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 08:12:27,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 08:12:27,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 08:12:27,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 08:12:27,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 08:12:27,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 08:12:27,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 08:12:27,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 08:12:27,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 08:12:27,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 08:12:27,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-18 08:12:27,611 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 08:12:27,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 08:12:27,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 08:12:27,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 08:12:27,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 08:12:27,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 08:12:27,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 08:12:27,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 08:12:27,613 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 08:12:27,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 08:12:27,613 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 08:12:27,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 08:12:27,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 08:12:27,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 08:12:27,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 08:12:27,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 08:12:27,613 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 08:12:27,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 08:12:27,614 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 08:12:27,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 08:12:27,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 08:12:27,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 08:12:27,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 08:12:27,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 08:12:27,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 08:12:27,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 08:12:27,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 08:12:27,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 08:12:27,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 08:12:27,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 08:12:27,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 08:12:27,615 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 08:12:27,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 08:12:27,615 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 08:12:27,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2023-02-18 08:12:27,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 08:12:27,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 08:12:27,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 08:12:27,806 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 08:12:27,807 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 08:12:27,807 INFO L432 ainManager$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 08:12:28,719 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 08:12:28,833 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 08:12:28,834 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-18 08:12:28,839 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f842d86cf/5e905336a4ca493ab65763806b4de21c/FLAG1ca3408e6 [2023-02-18 08:12:28,852 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f842d86cf/5e905336a4ca493ab65763806b4de21c [2023-02-18 08:12:28,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 08:12:28,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 08:12:28,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 08:12:28,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 08:12:28,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 08:12:28,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:28,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f3d745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28, skipping insertion in model container [2023-02-18 08:12:28,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:28,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 08:12:28,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 08:12:28,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:12:28,961 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 08:12:28,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:12:28,978 INFO L208 MainTranslator]: Completed translation [2023-02-18 08:12:28,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28 WrapperNode [2023-02-18 08:12:28,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 08:12:28,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 08:12:28,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 08:12:28,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 08:12:28,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:28,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:29,000 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2023-02-18 08:12:29,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 08:12:29,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 08:12:29,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 08:12:29,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 08:12:29,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:29,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:29,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:29,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:29,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:29,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:29,045 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:29,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:29,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 08:12:29,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 08:12:29,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 08:12:29,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 08:12:29,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (1/1) ... [2023-02-18 08:12:29,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 08:12:29,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:29,068 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 08:12:29,071 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 08:12:29,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 08:12:29,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 08:12:29,139 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 08:12:29,141 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 08:12:29,192 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 08:12:29,196 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 08:12:29,196 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 08:12:29,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:12:29 BoogieIcfgContainer [2023-02-18 08:12:29,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 08:12:29,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 08:12:29,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 08:12:29,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 08:12:29,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 08:12:28" (1/3) ... [2023-02-18 08:12:29,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3778f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:12:29, skipping insertion in model container [2023-02-18 08:12:29,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:12:28" (2/3) ... [2023-02-18 08:12:29,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3778f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:12:29, skipping insertion in model container [2023-02-18 08:12:29,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:12:29" (3/3) ... [2023-02-18 08:12:29,203 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-18 08:12:29,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 08:12:29,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-18 08:12:29,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 08:12:29,247 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;@3161bdad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 08:12:29,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-18 08:12:29,250 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 08:12:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 08:12:29,255 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:29,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 08:12:29,255 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 08:12:29,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:29,259 INFO L85 PathProgramCache]: Analyzing trace with hash 889513814, now seen corresponding path program 1 times [2023-02-18 08:12:29,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:29,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695602025] [2023-02-18 08:12:29,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:29,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:29,357 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 08:12:29,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:29,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695602025] [2023-02-18 08:12:29,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695602025] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:12:29,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:12:29,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 08:12:29,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519191071] [2023-02-18 08:12:29,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:12:29,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 08:12:29,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:29,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 08:12:29,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 08:12:29,381 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 08:12:29,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:29,416 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-02-18 08:12:29,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 08:12:29,418 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 08:12:29,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:29,423 INFO L225 Difference]: With dead ends: 35 [2023-02-18 08:12:29,423 INFO L226 Difference]: Without dead ends: 13 [2023-02-18 08:12:29,429 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 08:12:29,432 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 08:12:29,433 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 08:12:29,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-18 08:12:29,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-18 08:12:29,451 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 08:12:29,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-02-18 08:12:29,453 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2023-02-18 08:12:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:29,453 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-18 08:12:29,453 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 08:12:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-02-18 08:12:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 08:12:29,454 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:29,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 08:12:29,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 08:12:29,454 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 08:12:29,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash 889513869, now seen corresponding path program 1 times [2023-02-18 08:12:29,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:29,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677174537] [2023-02-18 08:12:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:29,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:29,482 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 08:12:29,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:29,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677174537] [2023-02-18 08:12:29,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677174537] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:12:29,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:12:29,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 08:12:29,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879240027] [2023-02-18 08:12:29,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:12:29,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 08:12:29,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:29,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 08:12:29,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 08:12:29,485 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 08:12:29,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:29,498 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-02-18 08:12:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 08:12:29,499 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 08:12:29,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:29,499 INFO L225 Difference]: With dead ends: 14 [2023-02-18 08:12:29,499 INFO L226 Difference]: Without dead ends: 13 [2023-02-18 08:12:29,499 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 08:12:29,500 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 08:12:29,501 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 08:12:29,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-18 08:12:29,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-02-18 08:12:29,503 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 08:12:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-02-18 08:12:29,504 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 6 [2023-02-18 08:12:29,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:29,504 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-18 08:12:29,504 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 08:12:29,504 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-02-18 08:12:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 08:12:29,505 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:29,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:12:29,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 08:12:29,505 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 08:12:29,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:29,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126220, now seen corresponding path program 1 times [2023-02-18 08:12:29,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:29,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182053183] [2023-02-18 08:12:29,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:29,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:29,564 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 08:12:29,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:29,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182053183] [2023-02-18 08:12:29,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182053183] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:12:29,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:12:29,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 08:12:29,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248822769] [2023-02-18 08:12:29,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:12:29,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 08:12:29,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:29,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 08:12:29,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 08:12:29,570 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 08:12:29,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:29,590 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2023-02-18 08:12:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 08:12:29,591 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 08:12:29,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:29,591 INFO L225 Difference]: With dead ends: 15 [2023-02-18 08:12:29,591 INFO L226 Difference]: Without dead ends: 14 [2023-02-18 08:12:29,592 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 08:12:29,593 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 08:12:29,593 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 08:12:29,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-02-18 08:12:29,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-02-18 08:12:29,600 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 08:12:29,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-02-18 08:12:29,601 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2023-02-18 08:12:29,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:29,601 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-02-18 08:12:29,601 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 08:12:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-02-18 08:12:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 08:12:29,602 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:29,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:12:29,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 08:12:29,602 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 08:12:29,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:29,603 INFO L85 PathProgramCache]: Analyzing trace with hash -770242199, now seen corresponding path program 1 times [2023-02-18 08:12:29,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:29,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357085333] [2023-02-18 08:12:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:29,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:29,657 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 08:12:29,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:29,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357085333] [2023-02-18 08:12:29,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357085333] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:12:29,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:12:29,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 08:12:29,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971200948] [2023-02-18 08:12:29,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:12:29,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 08:12:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 08:12:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 08:12:29,660 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 08:12:29,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:29,674 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-02-18 08:12:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 08:12:29,675 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 08:12:29,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:29,675 INFO L225 Difference]: With dead ends: 25 [2023-02-18 08:12:29,676 INFO L226 Difference]: Without dead ends: 24 [2023-02-18 08:12:29,676 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 08:12:29,677 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 08:12:29,677 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 08:12:29,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-18 08:12:29,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-02-18 08:12:29,681 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 08:12:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-18 08:12:29,681 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2023-02-18 08:12:29,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:29,681 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-18 08:12:29,682 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 08:12:29,682 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-18 08:12:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 08:12:29,682 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:29,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 08:12:29,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 08:12:29,683 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 08:12:29,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:29,683 INFO L85 PathProgramCache]: Analyzing trace with hash -770240501, now seen corresponding path program 1 times [2023-02-18 08:12:29,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:29,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378024356] [2023-02-18 08:12:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:29,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:29,726 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 08:12:29,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:29,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378024356] [2023-02-18 08:12:29,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378024356] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:29,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797840092] [2023-02-18 08:12:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:29,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:29,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:29,730 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 08:12:29,731 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 08:12:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:29,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 08:12:29,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:29,800 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 08:12:29,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:29,830 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 08:12:29,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797840092] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:29,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:29,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-02-18 08:12:29,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741939058] [2023-02-18 08:12:29,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:29,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 08:12:29,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 08:12:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-02-18 08:12:29,834 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 08:12:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:29,892 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-02-18 08:12:29,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 08:12:29,892 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 08:12:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:29,893 INFO L225 Difference]: With dead ends: 38 [2023-02-18 08:12:29,893 INFO L226 Difference]: Without dead ends: 22 [2023-02-18 08:12:29,893 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 08:12:29,894 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, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:12:29,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:12:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-18 08:12:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-02-18 08:12:29,897 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 08:12:29,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-02-18 08:12:29,898 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2023-02-18 08:12:29,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:29,898 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-02-18 08:12:29,898 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 08:12:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-02-18 08:12:29,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 08:12:29,899 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:29,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-18 08:12:29,908 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 08:12:30,103 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 08:12:30,104 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 08:12:30,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash -249756767, now seen corresponding path program 1 times [2023-02-18 08:12:30,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:30,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640202326] [2023-02-18 08:12:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:30,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:30,171 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 08:12:30,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:30,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640202326] [2023-02-18 08:12:30,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640202326] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:30,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844390310] [2023-02-18 08:12:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:30,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:30,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:30,174 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 08:12:30,176 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 08:12:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:30,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 08:12:30,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:30,210 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 08:12:30,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:30,220 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 08:12:30,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844390310] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:30,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:30,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-18 08:12:30,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082323749] [2023-02-18 08:12:30,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:30,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 08:12:30,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:30,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 08:12:30,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-18 08:12:30,222 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 08:12:30,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:30,259 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2023-02-18 08:12:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 08:12:30,260 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 08:12:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:30,261 INFO L225 Difference]: With dead ends: 52 [2023-02-18 08:12:30,261 INFO L226 Difference]: Without dead ends: 51 [2023-02-18 08:12:30,261 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 08:12:30,262 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 08:12:30,262 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 08:12:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-18 08:12:30,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2023-02-18 08:12:30,272 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 08:12:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2023-02-18 08:12:30,273 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 17 [2023-02-18 08:12:30,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:30,273 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2023-02-18 08:12:30,274 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 08:12:30,274 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2023-02-18 08:12:30,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 08:12:30,274 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:30,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:12:30,285 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 08:12:30,478 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 08:12:30,479 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 08:12:30,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:30,479 INFO L85 PathProgramCache]: Analyzing trace with hash -249755069, now seen corresponding path program 1 times [2023-02-18 08:12:30,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:30,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907985416] [2023-02-18 08:12:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:30,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:30,527 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 08:12:30,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:30,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907985416] [2023-02-18 08:12:30,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907985416] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:30,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544843073] [2023-02-18 08:12:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:30,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:30,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:30,529 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 08:12:30,531 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 08:12:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:30,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 08:12:30,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:30,579 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 08:12:30,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:30,633 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 08:12:30,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544843073] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:30,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:30,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-02-18 08:12:30,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268604708] [2023-02-18 08:12:30,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:30,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 08:12:30,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:30,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 08:12:30,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-02-18 08:12:30,637 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 08:12:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:30,834 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2023-02-18 08:12:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 08:12:30,834 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 08:12:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:30,837 INFO L225 Difference]: With dead ends: 70 [2023-02-18 08:12:30,837 INFO L226 Difference]: Without dead ends: 69 [2023-02-18 08:12:30,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=284, Invalid=838, Unknown=0, NotChecked=0, Total=1122 [2023-02-18 08:12:30,839 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 08:12:30,839 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 08:12:30,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-18 08:12:30,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2023-02-18 08:12:30,853 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 08:12:30,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-02-18 08:12:30,858 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 17 [2023-02-18 08:12:30,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:30,858 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-02-18 08:12:30,858 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 08:12:30,858 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-02-18 08:12:30,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 08:12:30,859 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:30,859 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:12:30,867 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 08:12:31,063 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 08:12:31,063 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 08:12:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:31,064 INFO L85 PathProgramCache]: Analyzing trace with hash 461482147, now seen corresponding path program 2 times [2023-02-18 08:12:31,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:31,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587707467] [2023-02-18 08:12:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:31,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:31,130 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 08:12:31,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:31,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587707467] [2023-02-18 08:12:31,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587707467] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:31,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15443812] [2023-02-18 08:12:31,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:12:31,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:31,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:31,132 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 08:12:31,139 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 08:12:31,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 08:12:31,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:12:31,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 08:12:31,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:31,202 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 08:12:31,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:31,256 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 08:12:31,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15443812] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:31,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:31,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-02-18 08:12:31,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513340027] [2023-02-18 08:12:31,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:31,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-18 08:12:31,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-18 08:12:31,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-02-18 08:12:31,257 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 08:12:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:31,566 INFO L93 Difference]: Finished difference Result 108 states and 127 transitions. [2023-02-18 08:12:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 08:12:31,567 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 08:12:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:31,567 INFO L225 Difference]: With dead ends: 108 [2023-02-18 08:12:31,567 INFO L226 Difference]: Without dead ends: 66 [2023-02-18 08:12:31,568 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 08:12:31,568 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 08:12:31,569 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 08:12:31,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-18 08:12:31,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2023-02-18 08:12:31,572 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 08:12:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-02-18 08:12:31,572 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 23 [2023-02-18 08:12:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:31,572 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-02-18 08:12:31,572 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 08:12:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-02-18 08:12:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-18 08:12:31,573 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:31,573 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2023-02-18 08:12:31,587 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 08:12:31,777 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 08:12:31,777 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 08:12:31,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:31,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1026452329, now seen corresponding path program 2 times [2023-02-18 08:12:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:31,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260941300] [2023-02-18 08:12:31,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:31,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:31,816 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 08:12:31,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:31,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260941300] [2023-02-18 08:12:31,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260941300] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:31,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476442532] [2023-02-18 08:12:31,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:12:31,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:31,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:31,818 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 08:12:31,820 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 08:12:31,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 08:12:31,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:12:31,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 08:12:31,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:31,850 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 08:12:31,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:31,860 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 08:12:31,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476442532] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:31,860 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:31,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-02-18 08:12:31,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271545870] [2023-02-18 08:12:31,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:31,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 08:12:31,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:31,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 08:12:31,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 08:12:31,863 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 08:12:31,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:31,874 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2023-02-18 08:12:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 08:12:31,875 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 08:12:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:31,875 INFO L225 Difference]: With dead ends: 45 [2023-02-18 08:12:31,875 INFO L226 Difference]: Without dead ends: 44 [2023-02-18 08:12:31,876 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 08:12:31,877 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 08:12:31,877 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 08:12:31,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-18 08:12:31,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2023-02-18 08:12:31,886 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 08:12:31,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-02-18 08:12:31,887 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 38 [2023-02-18 08:12:31,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:31,888 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-02-18 08:12:31,888 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 08:12:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-02-18 08:12:31,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-18 08:12:31,890 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:31,890 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 1, 1, 1, 1] [2023-02-18 08:12:31,901 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 08:12:32,094 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 08:12:32,095 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 08:12:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:32,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1026454027, now seen corresponding path program 3 times [2023-02-18 08:12:32,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:32,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967567061] [2023-02-18 08:12:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:32,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:32,185 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 08:12:32,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:32,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967567061] [2023-02-18 08:12:32,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967567061] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:32,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228993925] [2023-02-18 08:12:32,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 08:12:32,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:32,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:32,196 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 08:12:32,198 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 08:12:32,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-18 08:12:32,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:12:32,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 08:12:32,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:32,263 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 08:12:32,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:32,333 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 08:12:32,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228993925] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:32,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:32,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-02-18 08:12:32,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991658091] [2023-02-18 08:12:32,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:32,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 08:12:32,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:32,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 08:12:32,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2023-02-18 08:12:32,336 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 08:12:32,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:32,932 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2023-02-18 08:12:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-02-18 08:12:32,932 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 08:12:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:32,933 INFO L225 Difference]: With dead ends: 163 [2023-02-18 08:12:32,933 INFO L226 Difference]: Without dead ends: 162 [2023-02-18 08:12:32,935 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 08:12:32,935 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 08:12:32,936 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 08:12:32,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-18 08:12:32,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 112. [2023-02-18 08:12:32,942 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 08:12:32,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2023-02-18 08:12:32,942 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 38 [2023-02-18 08:12:32,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:32,942 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2023-02-18 08:12:32,943 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 08:12:32,943 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2023-02-18 08:12:32,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-18 08:12:32,943 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:32,943 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 4, 4, 4, 1, 1, 1, 1] [2023-02-18 08:12:32,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 08:12:33,157 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 08:12:33,157 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 08:12:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:33,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1283988075, now seen corresponding path program 4 times [2023-02-18 08:12:33,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:33,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268424969] [2023-02-18 08:12:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:33,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:33,288 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 08:12:33,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:33,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268424969] [2023-02-18 08:12:33,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268424969] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:33,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390597213] [2023-02-18 08:12:33,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 08:12:33,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:33,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:33,290 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 08:12:33,290 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 08:12:33,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 08:12:33,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:12:33,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 08:12:33,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:33,437 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 08:12:33,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:33,590 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 08:12:33,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390597213] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:33,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:33,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2023-02-18 08:12:33,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531820033] [2023-02-18 08:12:33,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:33,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 08:12:33,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:33,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 08:12:33,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 08:12:33,592 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 08:12:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:37,103 INFO L93 Difference]: Finished difference Result 915 states and 1117 transitions. [2023-02-18 08:12:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2023-02-18 08:12:37,103 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 08:12:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:37,107 INFO L225 Difference]: With dead ends: 915 [2023-02-18 08:12:37,107 INFO L226 Difference]: Without dead ends: 845 [2023-02-18 08:12:37,118 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 08:12:37,118 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 08:12:37,118 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 08:12:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-02-18 08:12:37,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 251. [2023-02-18 08:12:37,136 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 08:12:37,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 296 transitions. [2023-02-18 08:12:37,137 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 296 transitions. Word has length 44 [2023-02-18 08:12:37,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:37,137 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 296 transitions. [2023-02-18 08:12:37,137 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 08:12:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 296 transitions. [2023-02-18 08:12:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-18 08:12:37,138 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:37,138 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 6, 5, 5, 5, 1, 1, 1, 1] [2023-02-18 08:12:37,148 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 08:12:37,342 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 08:12:37,343 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 08:12:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:37,343 INFO L85 PathProgramCache]: Analyzing trace with hash 110001538, now seen corresponding path program 5 times [2023-02-18 08:12:37,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:37,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31520545] [2023-02-18 08:12:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:37,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:37,538 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 08:12:37,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:37,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31520545] [2023-02-18 08:12:37,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31520545] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:37,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860440176] [2023-02-18 08:12:37,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 08:12:37,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:37,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:37,540 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 08:12:37,542 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 08:12:37,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-02-18 08:12:37,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:12:37,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 08:12:37,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:37,740 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 08:12:37,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:37,975 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 08:12:37,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860440176] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:37,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:37,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2023-02-18 08:12:37,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197708551] [2023-02-18 08:12:37,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:37,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-18 08:12:37,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:37,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-18 08:12:37,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1578, Unknown=0, NotChecked=0, Total=1806 [2023-02-18 08:12:37,977 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 08:12:39,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:39,147 INFO L93 Difference]: Finished difference Result 887 states and 1065 transitions. [2023-02-18 08:12:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-02-18 08:12:39,147 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 08:12:39,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:39,149 INFO L225 Difference]: With dead ends: 887 [2023-02-18 08:12:39,149 INFO L226 Difference]: Without dead ends: 689 [2023-02-18 08:12:39,151 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 08:12:39,152 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 240 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 08:12:39,152 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 08:12:39,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-02-18 08:12:39,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 628. [2023-02-18 08:12:39,189 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 08:12:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 752 transitions. [2023-02-18 08:12:39,191 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 752 transitions. Word has length 60 [2023-02-18 08:12:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:39,191 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 752 transitions. [2023-02-18 08:12:39,191 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 08:12:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 752 transitions. [2023-02-18 08:12:39,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-18 08:12:39,192 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:39,192 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 6, 5, 5, 5, 1, 1, 1, 1] [2023-02-18 08:12:39,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 08:12:39,397 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 08:12:39,397 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 08:12:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1561347668, now seen corresponding path program 6 times [2023-02-18 08:12:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:39,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689328404] [2023-02-18 08:12:39,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:39,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:39,517 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 08:12:39,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:39,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689328404] [2023-02-18 08:12:39,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689328404] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:39,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034010939] [2023-02-18 08:12:39,518 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 08:12:39,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:39,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:39,519 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 08:12:39,522 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 08:12:39,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-02-18 08:12:39,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:12:39,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 08:12:39,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:39,680 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 08:12:39,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:39,833 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 08:12:39,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034010939] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:39,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:39,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2023-02-18 08:12:39,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001569215] [2023-02-18 08:12:39,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:39,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-18 08:12:39,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:39,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-18 08:12:39,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2023-02-18 08:12:39,835 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 08:12:41,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:41,284 INFO L93 Difference]: Finished difference Result 1792 states and 2140 transitions. [2023-02-18 08:12:41,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-02-18 08:12:41,284 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 08:12:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:41,286 INFO L225 Difference]: With dead ends: 1792 [2023-02-18 08:12:41,286 INFO L226 Difference]: Without dead ends: 616 [2023-02-18 08:12:41,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3289 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2203, Invalid=9139, Unknown=0, NotChecked=0, Total=11342 [2023-02-18 08:12:41,289 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 08:12:41,290 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 08:12:41,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2023-02-18 08:12:41,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 543. [2023-02-18 08:12:41,327 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 08:12:41,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 647 transitions. [2023-02-18 08:12:41,328 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 647 transitions. Word has length 66 [2023-02-18 08:12:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:41,329 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 647 transitions. [2023-02-18 08:12:41,329 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 08:12:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 647 transitions. [2023-02-18 08:12:41,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-18 08:12:41,330 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:41,331 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 7, 6, 6, 6, 1, 1, 1, 1] [2023-02-18 08:12:41,346 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 08:12:41,535 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 08:12:41,536 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 08:12:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1270477891, now seen corresponding path program 7 times [2023-02-18 08:12:41,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:41,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776988110] [2023-02-18 08:12:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:41,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:41,661 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 08:12:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:41,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776988110] [2023-02-18 08:12:41,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776988110] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:41,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377916356] [2023-02-18 08:12:41,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 08:12:41,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:41,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:41,663 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 08:12:41,680 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 08:12:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:41,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 08:12:41,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:41,804 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 08:12:41,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:41,890 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 08:12:41,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377916356] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:41,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:41,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2023-02-18 08:12:41,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258582551] [2023-02-18 08:12:41,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:41,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 08:12:41,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:41,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 08:12:41,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-02-18 08:12:41,893 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 08:12:42,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:42,305 INFO L93 Difference]: Finished difference Result 988 states and 1173 transitions. [2023-02-18 08:12:42,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-18 08:12:42,305 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 08:12:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:42,307 INFO L225 Difference]: With dead ends: 988 [2023-02-18 08:12:42,307 INFO L226 Difference]: Without dead ends: 574 [2023-02-18 08:12:42,307 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 08:12:42,308 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 08:12:42,308 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 08:12:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-02-18 08:12:42,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 536. [2023-02-18 08:12:42,343 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 08:12:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 630 transitions. [2023-02-18 08:12:42,345 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 630 transitions. Word has length 76 [2023-02-18 08:12:42,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:42,345 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 630 transitions. [2023-02-18 08:12:42,345 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 08:12:42,345 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 630 transitions. [2023-02-18 08:12:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-02-18 08:12:42,346 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:42,346 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 7, 6, 6, 6, 1, 1, 1, 1] [2023-02-18 08:12:42,352 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 08:12:42,550 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 08:12:42,550 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 08:12:42,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:42,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1458865890, now seen corresponding path program 8 times [2023-02-18 08:12:42,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:42,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612616120] [2023-02-18 08:12:42,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:42,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:42,679 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 08:12:42,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:42,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612616120] [2023-02-18 08:12:42,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612616120] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:42,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252664185] [2023-02-18 08:12:42,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:12:42,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:42,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:42,681 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 08:12:42,683 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 08:12:42,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 08:12:42,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:12:42,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 08:12:42,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:42,791 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 08:12:42,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:42,930 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 08:12:42,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252664185] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:42,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:42,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 32 [2023-02-18 08:12:42,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66679091] [2023-02-18 08:12:42,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:42,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 08:12:42,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:42,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 08:12:42,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 08:12:42,932 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 08:12:46,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:46,325 INFO L93 Difference]: Finished difference Result 2085 states and 2451 transitions. [2023-02-18 08:12:46,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-02-18 08:12:46,325 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 08:12:46,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:46,330 INFO L225 Difference]: With dead ends: 2085 [2023-02-18 08:12:46,330 INFO L226 Difference]: Without dead ends: 2084 [2023-02-18 08:12:46,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25436 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=11094, Invalid=43896, Unknown=0, NotChecked=0, Total=54990 [2023-02-18 08:12:46,336 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 08:12:46,336 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 08:12:46,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2023-02-18 08:12:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 910. [2023-02-18 08:12:46,433 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 08:12:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1075 transitions. [2023-02-18 08:12:46,434 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1075 transitions. Word has length 79 [2023-02-18 08:12:46,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:46,434 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1075 transitions. [2023-02-18 08:12:46,435 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 08:12:46,435 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1075 transitions. [2023-02-18 08:12:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-18 08:12:46,437 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:46,437 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 1, 1, 1, 1] [2023-02-18 08:12:46,443 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 08:12:46,639 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 08:12:46,639 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 08:12:46,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:46,639 INFO L85 PathProgramCache]: Analyzing trace with hash -775133941, now seen corresponding path program 9 times [2023-02-18 08:12:46,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:46,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499094293] [2023-02-18 08:12:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:46,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:46,758 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 08:12:46,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:46,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499094293] [2023-02-18 08:12:46,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499094293] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:46,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474664286] [2023-02-18 08:12:46,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 08:12:46,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:46,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:46,761 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 08:12:46,763 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 08:12:46,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-02-18 08:12:46,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:12:46,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 08:12:46,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:46,882 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 08:12:46,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:47,068 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 08:12:47,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474664286] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:47,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:47,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-02-18 08:12:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820401272] [2023-02-18 08:12:47,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:47,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 08:12:47,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:47,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 08:12:47,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 08:12:47,070 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 08:12:49,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:49,564 INFO L93 Difference]: Finished difference Result 6549 states and 7821 transitions. [2023-02-18 08:12:49,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2023-02-18 08:12:49,564 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 08:12:49,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:49,581 INFO L225 Difference]: With dead ends: 6549 [2023-02-18 08:12:49,581 INFO L226 Difference]: Without dead ends: 6548 [2023-02-18 08:12:49,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 132 SyntacticMatches, 10 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13150 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=7558, Invalid=23242, Unknown=0, NotChecked=0, Total=30800 [2023-02-18 08:12:49,585 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 254 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 08:12:49,586 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 08:12:49,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2023-02-18 08:12:49,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 3033. [2023-02-18 08:12:49,892 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 08:12:49,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 3599 transitions. [2023-02-18 08:12:49,896 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 3599 transitions. Word has length 80 [2023-02-18 08:12:49,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:49,896 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 3599 transitions. [2023-02-18 08:12:49,897 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 08:12:49,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 3599 transitions. [2023-02-18 08:12:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-18 08:12:49,898 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:49,898 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 11, 10, 10, 10, 1, 1, 1, 1] [2023-02-18 08:12:49,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-18 08:12:50,102 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 08:12:50,103 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 08:12:50,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:50,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1074429624, now seen corresponding path program 10 times [2023-02-18 08:12:50,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:50,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997671070] [2023-02-18 08:12:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:50,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:50,270 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 08:12:50,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:50,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997671070] [2023-02-18 08:12:50,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997671070] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:50,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373948771] [2023-02-18 08:12:50,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 08:12:50,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:50,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:50,272 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 08:12:50,274 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 08:12:50,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 08:12:50,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:12:50,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 08:12:50,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:50,439 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 08:12:50,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:50,620 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 08:12:50,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373948771] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:50,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:50,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 39 [2023-02-18 08:12:50,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104252950] [2023-02-18 08:12:50,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:50,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-18 08:12:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-18 08:12:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2023-02-18 08:12:50,622 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 08:12:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:52,854 INFO L93 Difference]: Finished difference Result 4930 states and 5838 transitions. [2023-02-18 08:12:52,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-02-18 08:12:52,854 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 08:12:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:52,861 INFO L225 Difference]: With dead ends: 4930 [2023-02-18 08:12:52,861 INFO L226 Difference]: Without dead ends: 3079 [2023-02-18 08:12:52,864 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 08:12:52,865 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 320 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 08:12:52,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 24 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 08:12:52,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2023-02-18 08:12:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 2642. [2023-02-18 08:12:53,171 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 08:12:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3048 transitions. [2023-02-18 08:12:53,175 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3048 transitions. Word has length 95 [2023-02-18 08:12:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:53,175 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 3048 transitions. [2023-02-18 08:12:53,175 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 08:12:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3048 transitions. [2023-02-18 08:12:53,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-02-18 08:12:53,177 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:53,177 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 12, 11, 11, 11, 1, 1, 1, 1] [2023-02-18 08:12:53,192 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 08:12:53,381 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 08:12:53,382 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 08:12:53,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:53,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1143389319, now seen corresponding path program 11 times [2023-02-18 08:12:53,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:53,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947189025] [2023-02-18 08:12:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:53,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:53,544 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 08:12:53,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:53,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947189025] [2023-02-18 08:12:53,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947189025] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:53,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638074897] [2023-02-18 08:12:53,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 08:12:53,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:53,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:53,546 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 08:12:53,549 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 08:12:53,587 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-02-18 08:12:53,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:12:53,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 08:12:53,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:53,828 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 08:12:53,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:54,089 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 08:12:54,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638074897] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:54,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:54,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 21] total 46 [2023-02-18 08:12:54,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116365666] [2023-02-18 08:12:54,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:54,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-18 08:12:54,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:54,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-18 08:12:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1837, Unknown=0, NotChecked=0, Total=2070 [2023-02-18 08:12:54,091 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 08:12:56,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:12:56,896 INFO L93 Difference]: Finished difference Result 5327 states and 6173 transitions. [2023-02-18 08:12:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-02-18 08:12:56,896 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 08:12:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:12:56,906 INFO L225 Difference]: With dead ends: 5327 [2023-02-18 08:12:56,906 INFO L226 Difference]: Without dead ends: 4167 [2023-02-18 08:12:56,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 171 SyntacticMatches, 7 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9679 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3555, Invalid=26201, Unknown=0, NotChecked=0, Total=29756 [2023-02-18 08:12:56,909 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, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 08:12:56,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 27 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 08:12:56,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2023-02-18 08:12:57,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 1920. [2023-02-18 08:12:57,174 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 08:12:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2225 transitions. [2023-02-18 08:12:57,196 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2225 transitions. Word has length 105 [2023-02-18 08:12:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:12:57,197 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2225 transitions. [2023-02-18 08:12:57,197 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 08:12:57,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2225 transitions. [2023-02-18 08:12:57,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-02-18 08:12:57,198 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:12:57,199 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 12, 11, 11, 11, 1, 1, 1, 1] [2023-02-18 08:12:57,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-18 08:12:57,401 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 08:12:57,401 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 08:12:57,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:12:57,401 INFO L85 PathProgramCache]: Analyzing trace with hash -544946177, now seen corresponding path program 12 times [2023-02-18 08:12:57,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:12:57,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612253824] [2023-02-18 08:12:57,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:12:57,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:12:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:12:57,528 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 08:12:57,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:12:57,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612253824] [2023-02-18 08:12:57,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612253824] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:12:57,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44374858] [2023-02-18 08:12:57,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 08:12:57,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:12:57,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:12:57,530 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 08:12:57,532 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 08:12:57,568 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-02-18 08:12:57,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:12:57,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 08:12:57,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:12:57,676 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 08:12:57,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:12:57,856 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 08:12:57,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44374858] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:12:57,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:12:57,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2023-02-18 08:12:57,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430091910] [2023-02-18 08:12:57,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:12:57,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-18 08:12:57,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:12:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-18 08:12:57,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1039, Unknown=0, NotChecked=0, Total=1260 [2023-02-18 08:12:57,857 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 08:13:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:03,763 INFO L93 Difference]: Finished difference Result 4018 states and 4719 transitions. [2023-02-18 08:13:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 316 states. [2023-02-18 08:13:03,763 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 08:13:03,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:03,773 INFO L225 Difference]: With dead ends: 4018 [2023-02-18 08:13:03,773 INFO L226 Difference]: Without dead ends: 4017 [2023-02-18 08:13:03,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 208 SyntacticMatches, 5 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56019 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=20455, Invalid=94127, Unknown=0, NotChecked=0, Total=114582 [2023-02-18 08:13:03,779 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 516 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 08:13:03,780 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 08:13:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2023-02-18 08:13:04,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 1564. [2023-02-18 08:13:04,103 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 08:13:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 1824 transitions. [2023-02-18 08:13:04,105 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 1824 transitions. Word has length 117 [2023-02-18 08:13:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:04,105 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 1824 transitions. [2023-02-18 08:13:04,105 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 08:13:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 1824 transitions. [2023-02-18 08:13:04,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-02-18 08:13:04,108 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:04,108 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 16, 15, 15, 15, 1, 1, 1, 1] [2023-02-18 08:13:04,112 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 08:13:04,312 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 08:13:04,313 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 08:13:04,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:04,313 INFO L85 PathProgramCache]: Analyzing trace with hash 694191114, now seen corresponding path program 13 times [2023-02-18 08:13:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:04,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714650355] [2023-02-18 08:13:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:04,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:04,438 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 08:13:04,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:04,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714650355] [2023-02-18 08:13:04,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714650355] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:04,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261208620] [2023-02-18 08:13:04,439 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 08:13:04,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:04,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:04,440 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 08:13:04,468 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 08:13:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:04,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 08:13:04,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:04,752 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 08:13:04,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:13:05,059 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 08:13:05,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261208620] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:13:05,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:13:05,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 22] total 47 [2023-02-18 08:13:05,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568632755] [2023-02-18 08:13:05,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:13:05,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-02-18 08:13:05,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:05,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-02-18 08:13:05,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1895, Unknown=0, NotChecked=0, Total=2162 [2023-02-18 08:13:05,061 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 08:13:08,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:08,984 INFO L93 Difference]: Finished difference Result 3116 states and 3638 transitions. [2023-02-18 08:13:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-02-18 08:13:08,984 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 08:13:08,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:08,989 INFO L225 Difference]: With dead ends: 3116 [2023-02-18 08:13:08,989 INFO L226 Difference]: Without dead ends: 2118 [2023-02-18 08:13:08,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 274 SyntacticMatches, 7 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14126 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6823, Invalid=34183, Unknown=0, NotChecked=0, Total=41006 [2023-02-18 08:13:08,992 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 08:13:08,993 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 08:13:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2023-02-18 08:13:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1668. [2023-02-18 08:13:09,418 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 08:13:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1941 transitions. [2023-02-18 08:13:09,420 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1941 transitions. Word has length 154 [2023-02-18 08:13:09,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:09,420 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 1941 transitions. [2023-02-18 08:13:09,420 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 08:13:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1941 transitions. [2023-02-18 08:13:09,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-02-18 08:13:09,423 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:09,423 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 22, 22, 22, 1, 1, 1, 1] [2023-02-18 08:13:09,430 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 08:13:09,630 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 08:13:09,630 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 08:13:09,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:09,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1772549365, now seen corresponding path program 14 times [2023-02-18 08:13:09,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:09,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410005945] [2023-02-18 08:13:09,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:09,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:09,953 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 08:13:09,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:09,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410005945] [2023-02-18 08:13:09,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410005945] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:09,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84278496] [2023-02-18 08:13:09,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:13:09,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:09,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:09,955 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 08:13:09,956 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 08:13:10,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 08:13:10,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:13:10,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-18 08:13:10,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:10,205 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 08:13:10,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:13:10,773 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 08:13:10,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84278496] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:13:10,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:13:10,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2023-02-18 08:13:10,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819594482] [2023-02-18 08:13:10,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:13:10,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-02-18 08:13:10,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:10,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-02-18 08:13:10,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=1986, Unknown=0, NotChecked=0, Total=3192 [2023-02-18 08:13:10,775 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 08:13:29,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:29,736 INFO L93 Difference]: Finished difference Result 31629 states and 37511 transitions. [2023-02-18 08:13:29,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 371 states. [2023-02-18 08:13:29,737 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 08:13:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:29,800 INFO L225 Difference]: With dead ends: 31629 [2023-02-18 08:13:29,800 INFO L226 Difference]: Without dead ends: 31628 [2023-02-18 08:13:29,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 276 SyntacticMatches, 22 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65819 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=34780, Invalid=109240, Unknown=0, NotChecked=0, Total=144020 [2023-02-18 08:13:29,813 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, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:29,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 55 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 08:13:29,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31628 states. [2023-02-18 08:13:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31628 to 4782. [2023-02-18 08:13:30,729 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 08:13:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 5612 transitions. [2023-02-18 08:13:30,733 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 5612 transitions. Word has length 164 [2023-02-18 08:13:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:30,733 INFO L495 AbstractCegarLoop]: Abstraction has 4782 states and 5612 transitions. [2023-02-18 08:13:30,733 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 08:13:30,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 5612 transitions. [2023-02-18 08:13:30,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-02-18 08:13:30,736 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:30,736 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 36, 16, 15, 15, 15, 1, 1, 1, 1] [2023-02-18 08:13:30,741 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 08:13:30,941 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 08:13:30,941 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 08:13:30,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:30,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1878403147, now seen corresponding path program 15 times [2023-02-18 08:13:30,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:30,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883129269] [2023-02-18 08:13:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:30,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:31,365 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 08:13:31,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:31,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883129269] [2023-02-18 08:13:31,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883129269] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:31,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58827556] [2023-02-18 08:13:31,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 08:13:31,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:31,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:31,367 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 08:13:31,369 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 08:13:31,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-18 08:13:31,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:13:31,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 08:13:31,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:31,809 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 08:13:31,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:13:32,228 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 08:13:32,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58827556] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:13:32,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:13:32,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 19, 19] total 65 [2023-02-18 08:13:32,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754611818] [2023-02-18 08:13:32,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:13:32,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-02-18 08:13:32,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:32,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-02-18 08:13:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=3792, Unknown=0, NotChecked=0, Total=4160 [2023-02-18 08:13:32,231 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 08:13:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:45,493 INFO L93 Difference]: Finished difference Result 14834 states and 18355 transitions. [2023-02-18 08:13:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 341 states. [2023-02-18 08:13:45,495 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 08:13:45,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:45,511 INFO L225 Difference]: With dead ends: 14834 [2023-02-18 08:13:45,512 INFO L226 Difference]: Without dead ends: 11099 [2023-02-18 08:13:45,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61625 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=20938, Invalid=141874, Unknown=0, NotChecked=0, Total=162812 [2023-02-18 08:13:45,522 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1572 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6363 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.5s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:45,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 39 Invalid, 6967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 6363 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-02-18 08:13:45,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2023-02-18 08:13:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 9322. [2023-02-18 08:13:47,168 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 08:13:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9322 states to 9322 states and 11694 transitions. [2023-02-18 08:13:47,177 INFO L78 Accepts]: Start accepts. Automaton has 9322 states and 11694 transitions. Word has length 175 [2023-02-18 08:13:47,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:47,177 INFO L495 AbstractCegarLoop]: Abstraction has 9322 states and 11694 transitions. [2023-02-18 08:13:47,178 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 08:13:47,178 INFO L276 IsEmpty]: Start isEmpty. Operand 9322 states and 11694 transitions. [2023-02-18 08:13:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-02-18 08:13:47,182 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:47,182 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 32, 24, 23, 23, 23, 1, 1, 1, 1] [2023-02-18 08:13:47,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-18 08:13:47,387 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 08:13:47,387 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 08:13:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:47,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1422549621, now seen corresponding path program 16 times [2023-02-18 08:13:47,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:47,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858057317] [2023-02-18 08:13:47,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:47,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:47,671 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 08:13:47,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:47,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858057317] [2023-02-18 08:13:47,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858057317] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:47,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641337905] [2023-02-18 08:13:47,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 08:13:47,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:47,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:47,673 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 08:13:47,676 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 08:13:47,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 08:13:47,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:13:47,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-18 08:13:47,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:47,976 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 08:13:47,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:13:48,476 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 08:13:48,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641337905] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:13:48,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:13:48,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 26] total 56 [2023-02-18 08:13:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607781554] [2023-02-18 08:13:48,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:13:48,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-02-18 08:13:48,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:48,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-02-18 08:13:48,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=790, Invalid=2402, Unknown=0, NotChecked=0, Total=3192 [2023-02-18 08:13:48,484 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 08:14:24,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:14:24,448 INFO L93 Difference]: Finished difference Result 62371 states and 81429 transitions. [2023-02-18 08:14:24,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 782 states. [2023-02-18 08:14:24,448 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 08:14:24,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:14:24,532 INFO L225 Difference]: With dead ends: 62371 [2023-02-18 08:14:24,532 INFO L226 Difference]: Without dead ends: 62370 [2023-02-18 08:14:24,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1183 GetRequests, 339 SyntacticMatches, 18 SemanticMatches, 826 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399686 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=156977, Invalid=527779, Unknown=0, NotChecked=0, Total=684756 [2023-02-18 08:14:24,574 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1240 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 855 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-02-18 08:14:24,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 24 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-02-18 08:14:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62370 states. [2023-02-18 08:14:32,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62370 to 18704. [2023-02-18 08:14:32,080 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 08:14:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18704 states to 18704 states and 22763 transitions. [2023-02-18 08:14:32,103 INFO L78 Accepts]: Start accepts. Automaton has 18704 states and 22763 transitions. Word has length 195 [2023-02-18 08:14:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:14:32,104 INFO L495 AbstractCegarLoop]: Abstraction has 18704 states and 22763 transitions. [2023-02-18 08:14:32,104 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 08:14:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 18704 states and 22763 transitions. [2023-02-18 08:14:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-02-18 08:14:32,126 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:14:32,126 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 56, 37, 36, 36, 36, 1, 1, 1, 1] [2023-02-18 08:14:32,130 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 08:14:32,330 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 08:14:32,330 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 08:14:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:14:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1730861666, now seen corresponding path program 17 times [2023-02-18 08:14:32,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:14:32,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621192078] [2023-02-18 08:14:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:14:32,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:14:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:14:32,988 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 08:14:32,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:14:32,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621192078] [2023-02-18 08:14:32,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621192078] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:14:32,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842839857] [2023-02-18 08:14:32,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 08:14:32,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:14:32,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:14:32,991 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 08:14:32,993 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 08:14:33,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2023-02-18 08:14:33,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:14:33,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 08:14:33,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:14:33,920 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 08:14:33,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:14:34,830 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 08:14:34,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842839857] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:14:34,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:14:34,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 39, 39] total 100 [2023-02-18 08:14:34,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592420374] [2023-02-18 08:14:34,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:14:34,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-02-18 08:14:34,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:14:34,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-02-18 08:14:34,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1438, Invalid=8462, Unknown=0, NotChecked=0, Total=9900 [2023-02-18 08:14:34,834 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 08:15:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:15:09,824 INFO L93 Difference]: Finished difference Result 37981 states and 45745 transitions. [2023-02-18 08:15:09,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 688 states. [2023-02-18 08:15:09,825 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 08:15:09,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:15:09,855 INFO L225 Difference]: With dead ends: 37981 [2023-02-18 08:15:09,855 INFO L226 Difference]: Without dead ends: 27343 [2023-02-18 08:15:09,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1371 GetRequests, 581 SyntacticMatches, 8 SemanticMatches, 782 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249282 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=49787, Invalid=564085, Unknown=0, NotChecked=0, Total=613872 [2023-02-18 08:15:09,885 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4351 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 10093 mSolverCounterSat, 1777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.7s IncrementalHoareTripleChecker+Time [2023-02-18 08:15:09,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 28 Invalid, 11870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1777 Valid, 10093 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-02-18 08:15:09,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27343 states. [2023-02-18 08:15:20,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27343 to 21017. [2023-02-18 08:15:20,555 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 08:15:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21017 states to 21017 states and 25328 transitions. [2023-02-18 08:15:20,578 INFO L78 Accepts]: Start accepts. Automaton has 21017 states and 25328 transitions. Word has length 319 [2023-02-18 08:15:20,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:15:20,578 INFO L495 AbstractCegarLoop]: Abstraction has 21017 states and 25328 transitions. [2023-02-18 08:15:20,578 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 08:15:20,579 INFO L276 IsEmpty]: Start isEmpty. Operand 21017 states and 25328 transitions. [2023-02-18 08:15:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-02-18 08:15:20,600 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:15:20,601 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 46, 46, 46, 1, 1, 1, 1] [2023-02-18 08:15:20,607 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 08:15:20,805 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 08:15:20,805 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 08:15:20,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:15:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1611311349, now seen corresponding path program 18 times [2023-02-18 08:15:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:15:20,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333132300] [2023-02-18 08:15:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:15:20,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:15:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:15:21,998 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 08:15:21,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:15:21,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333132300] [2023-02-18 08:15:21,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333132300] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:15:21,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391740460] [2023-02-18 08:15:21,998 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 08:15:21,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:15:21,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:15:21,999 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 08:15:22,000 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 08:15:22,112 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 66 check-sat command(s) [2023-02-18 08:15:22,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:15:22,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-18 08:15:22,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:15:22,929 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 08:15:22,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:15:25,005 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 08:15:25,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391740460] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:15:25,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:15:25,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 104 [2023-02-18 08:15:25,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300873195] [2023-02-18 08:15:25,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:15:25,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-02-18 08:15:25,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:15:25,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-02-18 08:15:25,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4686, Invalid=6234, Unknown=0, NotChecked=0, Total=10920 [2023-02-18 08:15:25,010 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 08:20:26,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:20:26,375 INFO L93 Difference]: Finished difference Result 623560 states and 766627 transitions. [2023-02-18 08:20:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 779 states. [2023-02-18 08:20:26,375 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 08:20:26,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:20:27,929 INFO L225 Difference]: With dead ends: 623560 [2023-02-18 08:20:27,930 INFO L226 Difference]: Without dead ends: 623559 [2023-02-18 08:20:28,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1396 GetRequests, 564 SyntacticMatches, 46 SemanticMatches, 786 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292114 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=148408, Invalid=471748, Unknown=0, NotChecked=0, Total=620156 [2023-02-18 08:20:28,132 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, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 08:20:28,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 82 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-18 08:20:28,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623559 states. [2023-02-18 08:20:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623559 to 37334. [2023-02-18 08:20:45,978 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 08:20:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37334 states to 37334 states and 45431 transitions. [2023-02-18 08:20:46,019 INFO L78 Accepts]: Start accepts. Automaton has 37334 states and 45431 transitions. Word has length 332 [2023-02-18 08:20:46,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:20:46,020 INFO L495 AbstractCegarLoop]: Abstraction has 37334 states and 45431 transitions. [2023-02-18 08:20:46,020 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 08:20:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 37334 states and 45431 transitions. [2023-02-18 08:20:46,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-02-18 08:20:46,043 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:20:46,043 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 62, 37, 36, 36, 36, 1, 1, 1, 1] [2023-02-18 08:20:46,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-02-18 08:20:46,248 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 08:20:46,248 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 08:20:46,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:20:46,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1291387804, now seen corresponding path program 19 times [2023-02-18 08:20:46,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:20:46,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10934266] [2023-02-18 08:20:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:20:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:20:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:20:46,800 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 08:20:46,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:20:46,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10934266] [2023-02-18 08:20:46,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10934266] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:20:46,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285143343] [2023-02-18 08:20:46,801 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 08:20:46,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:20:46,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:20:46,802 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 08:20:46,804 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 08:20:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:20:46,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 08:20:46,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:20:47,698 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 08:20:47,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:20:48,710 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 08:20:48,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285143343] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:20:48,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:20:48,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 39, 39] total 97 [2023-02-18 08:20:48,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023891601] [2023-02-18 08:20:48,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:20:48,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-02-18 08:20:48,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:20:48,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-02-18 08:20:48,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1316, Invalid=7996, Unknown=0, NotChecked=0, Total=9312 [2023-02-18 08:20:48,714 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 08:21:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:21:26,749 INFO L93 Difference]: Finished difference Result 65896 states and 80328 transitions. [2023-02-18 08:21:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 637 states. [2023-02-18 08:21:26,750 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 08:21:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:21:26,795 INFO L225 Difference]: With dead ends: 65896 [2023-02-18 08:21:26,795 INFO L226 Difference]: Without dead ends: 41845 [2023-02-18 08:21:26,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 599 SyntacticMatches, 10 SemanticMatches, 727 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214382 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=43381, Invalid=487331, Unknown=0, NotChecked=0, Total=530712 [2023-02-18 08:21:26,833 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3159 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 10025 mSolverCounterSat, 1374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.5s IncrementalHoareTripleChecker+Time [2023-02-18 08:21:26,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3159 Valid, 32 Invalid, 11399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1374 Valid, 10025 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-02-18 08:21:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41845 states. [2023-02-18 08:21:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41845 to 38244. [2023-02-18 08:21:42,501 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 08:21:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38244 states to 38244 states and 46169 transitions. [2023-02-18 08:21:42,540 INFO L78 Accepts]: Start accepts. Automaton has 38244 states and 46169 transitions. Word has length 337 [2023-02-18 08:21:42,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:21:42,540 INFO L495 AbstractCegarLoop]: Abstraction has 38244 states and 46169 transitions. [2023-02-18 08:21:42,540 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 08:21:42,540 INFO L276 IsEmpty]: Start isEmpty. Operand 38244 states and 46169 transitions. [2023-02-18 08:21:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-02-18 08:21:42,559 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:21:42,559 INFO L195 NwaCegarLoop]: trace histogram [70, 70, 69, 37, 36, 36, 36, 1, 1, 1, 1] [2023-02-18 08:21:42,565 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 08:21:42,763 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 08:21:42,763 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 08:21:42,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:21:42,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1720307217, now seen corresponding path program 20 times [2023-02-18 08:21:42,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:21:42,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165963146] [2023-02-18 08:21:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:21:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:21:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:21:43,274 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 08:21:43,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:21:43,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165963146] [2023-02-18 08:21:43,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165963146] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:21:43,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576258335] [2023-02-18 08:21:43,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:21:43,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:21:43,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:21:43,277 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 08:21:43,278 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 08:21:43,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 08:21:43,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:21:43,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-18 08:21:43,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:21:44,146 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 08:21:44,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:21:44,974 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 08:21:44,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576258335] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:21:44,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:21:44,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 38, 38] total 88 [2023-02-18 08:21:44,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506280377] [2023-02-18 08:21:44,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:21:44,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-02-18 08:21:44,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:21:44,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-02-18 08:21:44,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=906, Invalid=6750, Unknown=0, NotChecked=0, Total=7656 [2023-02-18 08:21:44,977 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 08:22:17,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:22:17,588 INFO L93 Difference]: Finished difference Result 49835 states and 60055 transitions. [2023-02-18 08:22:17,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 431 states. [2023-02-18 08:22:17,589 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 08:22:17,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:22:17,635 INFO L225 Difference]: With dead ends: 49835 [2023-02-18 08:22:17,635 INFO L226 Difference]: Without dead ends: 40862 [2023-02-18 08:22:17,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 643 SyntacticMatches, 15 SemanticMatches, 512 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101900 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=26116, Invalid=237566, Unknown=0, NotChecked=0, Total=263682 [2023-02-18 08:22:17,662 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 08:22:17,662 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 08:22:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40862 states. [2023-02-18 08:22:34,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40862 to 38704. [2023-02-18 08:22:35,002 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 08:22:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38704 states to 38704 states and 46701 transitions. [2023-02-18 08:22:35,048 INFO L78 Accepts]: Start accepts. Automaton has 38704 states and 46701 transitions. Word has length 358 [2023-02-18 08:22:35,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:22:35,048 INFO L495 AbstractCegarLoop]: Abstraction has 38704 states and 46701 transitions. [2023-02-18 08:22:35,049 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 08:22:35,049 INFO L276 IsEmpty]: Start isEmpty. Operand 38704 states and 46701 transitions. [2023-02-18 08:22:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-02-18 08:22:35,069 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:22:35,069 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 79, 43, 42, 42, 42, 1, 1, 1, 1] [2023-02-18 08:22:35,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-02-18 08:22:35,270 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 08:22:35,270 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 08:22:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:22:35,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1005103507, now seen corresponding path program 21 times [2023-02-18 08:22:35,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:22:35,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364051894] [2023-02-18 08:22:35,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:22:35,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:22:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:22:35,869 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 08:22:35,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:22:35,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364051894] [2023-02-18 08:22:35,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364051894] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:22:35,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474904338] [2023-02-18 08:22:35,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 08:22:35,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:22:35,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:22:35,870 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 08:22:35,871 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 08:22:35,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-18 08:22:35,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:22:35,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 08:22:35,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:22:36,201 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 08:22:36,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:22:36,632 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 08:22:36,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474904338] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:22:36,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:22:36,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 16, 16] total 62 [2023-02-18 08:22:36,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076348784] [2023-02-18 08:22:36,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:22:36,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-02-18 08:22:36,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:22:36,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-02-18 08:22:36,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=3341, Unknown=0, NotChecked=0, Total=3906 [2023-02-18 08:22:36,635 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)