./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 09:22:30,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:22:30,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:22:30,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:22:30,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:22:30,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:22:30,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:22:30,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:22:30,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:22:30,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:22:30,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:22:30,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:22:30,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:22:30,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:22:30,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:22:30,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:22:30,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:22:30,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:22:30,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:22:30,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:22:30,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:22:30,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:22:30,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:22:30,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:22:30,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:22:30,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:22:30,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:22:30,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:22:30,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:22:30,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:22:30,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:22:30,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:22:30,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:22:30,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:22:30,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:22:30,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:22:30,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:22:30,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:22:30,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:22:30,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:22:30,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:22:30,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-17 09:22:30,630 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:22:30,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:22:30,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:22:30,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:22:30,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 09:22:30,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 09:22:30,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:22:30,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:22:30,633 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:22:30,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:22:30,634 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:22:30,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:22:30,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:22:30,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 09:22:30,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 09:22:30,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 09:22:30,635 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 09:22:30,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:22:30,636 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:22:30,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 09:22:30,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:22:30,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:22:30,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 09:22:30,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:22:30,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:22:30,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 09:22:30,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 09:22:30,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:22:30,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 09:22:30,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 09:22:30,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 09:22:30,639 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 09:22:30,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 09:22:30,639 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 09:22:30,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2023-02-17 09:22:30,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:22:30,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:22:30,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:22:30,900 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:22:30,901 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:22:30,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-17 09:22:31,958 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:22:32,163 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:22:32,164 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-17 09:22:32,170 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91af2b0d3/c496cafc6d384a5da40cee16d918605f/FLAG8f923f01f [2023-02-17 09:22:32,182 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91af2b0d3/c496cafc6d384a5da40cee16d918605f [2023-02-17 09:22:32,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:22:32,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:22:32,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:22:32,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:22:32,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:22:32,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c9be5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32, skipping insertion in model container [2023-02-17 09:22:32,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:22:32,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:22:32,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:22:32,307 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:22:32,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:22:32,327 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:22:32,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32 WrapperNode [2023-02-17 09:22:32,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:22:32,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:22:32,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:22:32,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:22:32,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,353 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2023-02-17 09:22:32,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:22:32,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:22:32,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:22:32,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:22:32,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,374 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:22:32,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:22:32,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:22:32,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:22:32,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (1/1) ... [2023-02-17 09:22:32,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:22:32,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:32,407 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) [2023-02-17 09:22:32,408 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 [2023-02-17 09:22:32,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:22:32,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:22:32,499 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:22:32,500 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:22:32,625 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:22:32,630 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:22:32,630 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 09:22:32,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:22:32 BoogieIcfgContainer [2023-02-17 09:22:32,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:22:32,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 09:22:32,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 09:22:32,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 09:22:32,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:22:32" (1/3) ... [2023-02-17 09:22:32,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8e040a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:22:32, skipping insertion in model container [2023-02-17 09:22:32,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:22:32" (2/3) ... [2023-02-17 09:22:32,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8e040a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:22:32, skipping insertion in model container [2023-02-17 09:22:32,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:22:32" (3/3) ... [2023-02-17 09:22:32,646 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-17 09:22:32,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 09:22:32,676 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-17 09:22:32,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 09:22:32,754 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;@4eae289b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 09:22:32,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-17 09:22:32,758 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) [2023-02-17 09:22:32,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 09:22:32,763 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:32,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 09:22:32,764 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)] === [2023-02-17 09:22:32,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:32,768 INFO L85 PathProgramCache]: Analyzing trace with hash 889513814, now seen corresponding path program 1 times [2023-02-17 09:22:32,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:32,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630254766] [2023-02-17 09:22:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:32,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:22:32,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:32,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630254766] [2023-02-17 09:22:32,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630254766] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:22:32,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:22:32,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:22:32,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129736113] [2023-02-17 09:22:32,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:22:32,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 09:22:32,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:32,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 09:22:32,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:22:32,995 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) [2023-02-17 09:22:33,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:33,054 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-02-17 09:22:33,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 09:22:33,059 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 [2023-02-17 09:22:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:33,065 INFO L225 Difference]: With dead ends: 35 [2023-02-17 09:22:33,066 INFO L226 Difference]: Without dead ends: 13 [2023-02-17 09:22:33,069 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 [2023-02-17 09:22:33,074 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 [2023-02-17 09:22:33,075 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] [2023-02-17 09:22:33,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-17 09:22:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-17 09:22:33,100 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) [2023-02-17 09:22:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-02-17 09:22:33,102 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2023-02-17 09:22:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:33,102 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-17 09:22:33,102 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) [2023-02-17 09:22:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-02-17 09:22:33,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 09:22:33,103 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:33,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 09:22:33,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 09:22:33,104 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)] === [2023-02-17 09:22:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:33,105 INFO L85 PathProgramCache]: Analyzing trace with hash 889513869, now seen corresponding path program 1 times [2023-02-17 09:22:33,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:33,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016603851] [2023-02-17 09:22:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:33,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:22:33,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:33,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016603851] [2023-02-17 09:22:33,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016603851] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:22:33,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:22:33,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 09:22:33,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462967012] [2023-02-17 09:22:33,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:22:33,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 09:22:33,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:33,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 09:22:33,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:22:33,159 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) [2023-02-17 09:22:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:33,188 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-02-17 09:22:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 09:22:33,189 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 [2023-02-17 09:22:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:33,189 INFO L225 Difference]: With dead ends: 14 [2023-02-17 09:22:33,190 INFO L226 Difference]: Without dead ends: 13 [2023-02-17 09:22:33,190 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 [2023-02-17 09:22:33,191 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 [2023-02-17 09:22:33,192 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] [2023-02-17 09:22:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-17 09:22:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-02-17 09:22:33,201 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) [2023-02-17 09:22:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-02-17 09:22:33,201 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 6 [2023-02-17 09:22:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:33,202 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-17 09:22:33,202 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) [2023-02-17 09:22:33,202 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-02-17 09:22:33,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 09:22:33,203 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:33,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:22:33,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 09:22:33,205 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)] === [2023-02-17 09:22:33,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:33,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126220, now seen corresponding path program 1 times [2023-02-17 09:22:33,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:33,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654800848] [2023-02-17 09:22:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:33,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:22:33,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:33,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654800848] [2023-02-17 09:22:33,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654800848] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:22:33,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:22:33,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 09:22:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690836606] [2023-02-17 09:22:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:22:33,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 09:22:33,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 09:22:33,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:22:33,273 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) [2023-02-17 09:22:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:33,297 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2023-02-17 09:22:33,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 09:22:33,298 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 [2023-02-17 09:22:33,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:33,298 INFO L225 Difference]: With dead ends: 15 [2023-02-17 09:22:33,298 INFO L226 Difference]: Without dead ends: 14 [2023-02-17 09:22:33,305 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 [2023-02-17 09:22:33,306 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 [2023-02-17 09:22:33,307 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] [2023-02-17 09:22:33,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-02-17 09:22:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-02-17 09:22:33,310 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) [2023-02-17 09:22:33,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-02-17 09:22:33,310 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2023-02-17 09:22:33,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:33,311 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-02-17 09:22:33,311 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) [2023-02-17 09:22:33,311 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-02-17 09:22:33,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 09:22:33,312 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:33,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:22:33,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 09:22:33,312 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)] === [2023-02-17 09:22:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:33,313 INFO L85 PathProgramCache]: Analyzing trace with hash -770242199, now seen corresponding path program 1 times [2023-02-17 09:22:33,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:33,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623317262] [2023-02-17 09:22:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:33,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:22:33,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:33,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623317262] [2023-02-17 09:22:33,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623317262] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:22:33,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:22:33,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:22:33,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789429032] [2023-02-17 09:22:33,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:22:33,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:22:33,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:33,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:22:33,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:22:33,347 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) [2023-02-17 09:22:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:33,362 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-02-17 09:22:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:22:33,363 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 [2023-02-17 09:22:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:33,364 INFO L225 Difference]: With dead ends: 25 [2023-02-17 09:22:33,364 INFO L226 Difference]: Without dead ends: 24 [2023-02-17 09:22:33,364 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 [2023-02-17 09:22:33,366 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 [2023-02-17 09:22:33,366 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] [2023-02-17 09:22:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-17 09:22:33,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-02-17 09:22:33,373 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) [2023-02-17 09:22:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-17 09:22:33,374 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2023-02-17 09:22:33,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:33,375 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-17 09:22:33,375 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) [2023-02-17 09:22:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-17 09:22:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 09:22:33,376 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:33,376 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 09:22:33,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 09:22:33,377 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)] === [2023-02-17 09:22:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:33,378 INFO L85 PathProgramCache]: Analyzing trace with hash -770240501, now seen corresponding path program 1 times [2023-02-17 09:22:33,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:33,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025796534] [2023-02-17 09:22:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:33,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:22:33,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:33,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025796534] [2023-02-17 09:22:33,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025796534] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:33,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607403368] [2023-02-17 09:22:33,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:33,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:33,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:33,445 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) [2023-02-17 09:22:33,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 09:22:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:33,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 09:22:33,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:22:33,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:22:33,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607403368] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:33,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:33,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-02-17 09:22:33,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461670922] [2023-02-17 09:22:33,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:33,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 09:22:33,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:33,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 09:22:33,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-02-17 09:22:33,559 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) [2023-02-17 09:22:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:33,603 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-02-17 09:22:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 09:22:33,604 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 [2023-02-17 09:22:33,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:33,604 INFO L225 Difference]: With dead ends: 38 [2023-02-17 09:22:33,604 INFO L226 Difference]: Without dead ends: 22 [2023-02-17 09:22:33,605 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 [2023-02-17 09:22:33,606 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 [2023-02-17 09:22:33,607 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] [2023-02-17 09:22:33,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-17 09:22:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-02-17 09:22:33,610 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) [2023-02-17 09:22:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-02-17 09:22:33,611 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2023-02-17 09:22:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:33,611 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-02-17 09:22:33,612 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) [2023-02-17 09:22:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-02-17 09:22:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 09:22:33,612 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:33,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-17 09:22:33,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 09:22:33,819 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 [2023-02-17 09:22:33,819 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)] === [2023-02-17 09:22:33,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:33,820 INFO L85 PathProgramCache]: Analyzing trace with hash -249756767, now seen corresponding path program 1 times [2023-02-17 09:22:33,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:33,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902553131] [2023-02-17 09:22:33,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:33,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 09:22:33,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:33,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902553131] [2023-02-17 09:22:33,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902553131] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:33,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812296016] [2023-02-17 09:22:33,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:33,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:33,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:33,867 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) [2023-02-17 09:22:33,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 09:22:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:33,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 09:22:33,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 09:22:33,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 09:22:33,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812296016] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:33,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:33,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-17 09:22:33,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105528171] [2023-02-17 09:22:33,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:33,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 09:22:33,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:33,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 09:22:33,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-17 09:22:33,958 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) [2023-02-17 09:22:34,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:34,006 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2023-02-17 09:22:34,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:22:34,006 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 [2023-02-17 09:22:34,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:34,007 INFO L225 Difference]: With dead ends: 52 [2023-02-17 09:22:34,009 INFO L226 Difference]: Without dead ends: 51 [2023-02-17 09:22:34,009 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 [2023-02-17 09:22:34,012 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 [2023-02-17 09:22:34,015 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] [2023-02-17 09:22:34,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-17 09:22:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2023-02-17 09:22:34,024 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) [2023-02-17 09:22:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2023-02-17 09:22:34,025 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 17 [2023-02-17 09:22:34,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:34,025 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2023-02-17 09:22:34,025 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) [2023-02-17 09:22:34,025 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2023-02-17 09:22:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 09:22:34,026 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:34,026 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:22:34,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 09:22:34,235 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 [2023-02-17 09:22:34,236 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)] === [2023-02-17 09:22:34,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash -249755069, now seen corresponding path program 1 times [2023-02-17 09:22:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:34,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102711409] [2023-02-17 09:22:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:34,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:22:34,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:34,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102711409] [2023-02-17 09:22:34,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102711409] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:34,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051987640] [2023-02-17 09:22:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:34,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:34,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:34,317 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) [2023-02-17 09:22:34,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 09:22:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:34,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:22:34,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:22:34,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:22:34,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051987640] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:34,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:34,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-02-17 09:22:34,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568692409] [2023-02-17 09:22:34,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:34,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-17 09:22:34,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:34,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-17 09:22:34,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-02-17 09:22:34,471 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) [2023-02-17 09:22:34,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:34,738 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2023-02-17 09:22:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-17 09:22:34,739 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 [2023-02-17 09:22:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:34,740 INFO L225 Difference]: With dead ends: 70 [2023-02-17 09:22:34,740 INFO L226 Difference]: Without dead ends: 69 [2023-02-17 09:22:34,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=284, Invalid=838, Unknown=0, NotChecked=0, Total=1122 [2023-02-17 09:22:34,741 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 [2023-02-17 09:22:34,741 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] [2023-02-17 09:22:34,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-17 09:22:34,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2023-02-17 09:22:34,749 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) [2023-02-17 09:22:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-02-17 09:22:34,750 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 17 [2023-02-17 09:22:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:34,750 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-02-17 09:22:34,750 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) [2023-02-17 09:22:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-02-17 09:22:34,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 09:22:34,751 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:34,751 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:22:34,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 09:22:34,957 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 [2023-02-17 09:22:34,957 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)] === [2023-02-17 09:22:34,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:34,958 INFO L85 PathProgramCache]: Analyzing trace with hash 461482147, now seen corresponding path program 2 times [2023-02-17 09:22:34,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:34,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937335311] [2023-02-17 09:22:34,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:34,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 09:22:35,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:35,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937335311] [2023-02-17 09:22:35,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937335311] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:35,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925782527] [2023-02-17 09:22:35,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:22:35,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:35,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:35,034 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) [2023-02-17 09:22:35,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 09:22:35,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:22:35,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:22:35,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 09:22:35,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 09:22:35,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 09:22:35,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925782527] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:35,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:35,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-02-17 09:22:35,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871255245] [2023-02-17 09:22:35,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:35,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-17 09:22:35,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:35,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-17 09:22:35,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-02-17 09:22:35,218 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) [2023-02-17 09:22:35,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:35,632 INFO L93 Difference]: Finished difference Result 108 states and 127 transitions. [2023-02-17 09:22:35,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-17 09:22:35,634 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 [2023-02-17 09:22:35,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:35,634 INFO L225 Difference]: With dead ends: 108 [2023-02-17 09:22:35,634 INFO L226 Difference]: Without dead ends: 66 [2023-02-17 09:22:35,635 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 [2023-02-17 09:22:35,636 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:22:35,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 18 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 09:22:35,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-17 09:22:35,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2023-02-17 09:22:35,647 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) [2023-02-17 09:22:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-02-17 09:22:35,650 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 23 [2023-02-17 09:22:35,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:35,650 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-02-17 09:22:35,650 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) [2023-02-17 09:22:35,650 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-02-17 09:22:35,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 09:22:35,652 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:35,652 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2023-02-17 09:22:35,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 09:22:35,857 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 [2023-02-17 09:22:35,858 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)] === [2023-02-17 09:22:35,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:35,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1026452329, now seen corresponding path program 2 times [2023-02-17 09:22:35,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:35,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315312368] [2023-02-17 09:22:35,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:35,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-02-17 09:22:35,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:35,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315312368] [2023-02-17 09:22:35,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315312368] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:35,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415752862] [2023-02-17 09:22:35,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:22:35,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:35,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:35,930 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) [2023-02-17 09:22:35,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 09:22:35,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-17 09:22:35,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:22:35,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 09:22:35,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-02-17 09:22:35,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-02-17 09:22:35,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415752862] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:35,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:35,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-02-17 09:22:35,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16775585] [2023-02-17 09:22:35,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:36,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 09:22:36,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:36,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 09:22:36,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:22:36,002 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) [2023-02-17 09:22:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:36,015 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2023-02-17 09:22:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 09:22:36,016 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 [2023-02-17 09:22:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:36,017 INFO L225 Difference]: With dead ends: 45 [2023-02-17 09:22:36,017 INFO L226 Difference]: Without dead ends: 44 [2023-02-17 09:22:36,017 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 [2023-02-17 09:22:36,019 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 [2023-02-17 09:22:36,020 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] [2023-02-17 09:22:36,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-17 09:22:36,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2023-02-17 09:22:36,033 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) [2023-02-17 09:22:36,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-02-17 09:22:36,034 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 38 [2023-02-17 09:22:36,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:36,034 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-02-17 09:22:36,034 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) [2023-02-17 09:22:36,035 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-02-17 09:22:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 09:22:36,035 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:36,035 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 1, 1, 1, 1] [2023-02-17 09:22:36,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 09:22:36,241 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 [2023-02-17 09:22:36,241 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)] === [2023-02-17 09:22:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:36,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1026454027, now seen corresponding path program 3 times [2023-02-17 09:22:36,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:36,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878258956] [2023-02-17 09:22:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:36,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 09:22:36,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:36,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878258956] [2023-02-17 09:22:36,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878258956] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:36,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120881020] [2023-02-17 09:22:36,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:22:36,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:36,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:36,347 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) [2023-02-17 09:22:36,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 09:22:36,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-17 09:22:36,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:22:36,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 09:22:36,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 09:22:36,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 09:22:36,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120881020] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:36,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:36,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-02-17 09:22:36,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487892045] [2023-02-17 09:22:36,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:36,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-17 09:22:36,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:36,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-17 09:22:36,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2023-02-17 09:22:36,508 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) [2023-02-17 09:22:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:37,224 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2023-02-17 09:22:37,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-02-17 09:22:37,226 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 [2023-02-17 09:22:37,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:37,227 INFO L225 Difference]: With dead ends: 163 [2023-02-17 09:22:37,227 INFO L226 Difference]: Without dead ends: 162 [2023-02-17 09:22:37,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2541 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1705, Invalid=5101, Unknown=0, NotChecked=0, Total=6806 [2023-02-17 09:22:37,233 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 129 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:22:37,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 20 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 09:22:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-17 09:22:37,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 112. [2023-02-17 09:22:37,247 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) [2023-02-17 09:22:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2023-02-17 09:22:37,249 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 38 [2023-02-17 09:22:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:37,249 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2023-02-17 09:22:37,249 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) [2023-02-17 09:22:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2023-02-17 09:22:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-17 09:22:37,254 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:37,254 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 4, 4, 4, 1, 1, 1, 1] [2023-02-17 09:22:37,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 09:22:37,455 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 [2023-02-17 09:22:37,455 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)] === [2023-02-17 09:22:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1283988075, now seen corresponding path program 4 times [2023-02-17 09:22:37,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:37,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962754907] [2023-02-17 09:22:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:37,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 65 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 09:22:37,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:37,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962754907] [2023-02-17 09:22:37,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962754907] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:37,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014531508] [2023-02-17 09:22:37,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 09:22:37,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:37,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:37,581 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) [2023-02-17 09:22:37,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 09:22:37,614 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 09:22:37,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:22:37,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 09:22:37,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 09:22:37,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 09:22:37,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014531508] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:37,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:37,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2023-02-17 09:22:37,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317821771] [2023-02-17 09:22:37,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:37,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-17 09:22:37,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:37,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-17 09:22:37,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 09:22:37,909 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) [2023-02-17 09:22:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:41,810 INFO L93 Difference]: Finished difference Result 915 states and 1117 transitions. [2023-02-17 09:22:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2023-02-17 09:22:41,811 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 [2023-02-17 09:22:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:41,815 INFO L225 Difference]: With dead ends: 915 [2023-02-17 09:22:41,815 INFO L226 Difference]: Without dead ends: 845 [2023-02-17 09:22:41,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17643 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6285, Invalid=38025, Unknown=0, NotChecked=0, Total=44310 [2023-02-17 09:22:41,831 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 867 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-02-17 09:22:41,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 27 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-17 09:22:41,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-02-17 09:22:41,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 251. [2023-02-17 09:22:41,871 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) [2023-02-17 09:22:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 296 transitions. [2023-02-17 09:22:41,872 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 296 transitions. Word has length 44 [2023-02-17 09:22:41,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:41,874 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 296 transitions. [2023-02-17 09:22:41,874 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) [2023-02-17 09:22:41,874 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 296 transitions. [2023-02-17 09:22:41,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-17 09:22:41,879 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:41,879 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 6, 5, 5, 5, 1, 1, 1, 1] [2023-02-17 09:22:41,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 09:22:42,084 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 [2023-02-17 09:22:42,085 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)] === [2023-02-17 09:22:42,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash 110001538, now seen corresponding path program 5 times [2023-02-17 09:22:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:42,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925265658] [2023-02-17 09:22:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 30 proven. 265 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-17 09:22:42,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:42,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925265658] [2023-02-17 09:22:42,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925265658] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:42,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216426300] [2023-02-17 09:22:42,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 09:22:42,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:42,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:42,329 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) [2023-02-17 09:22:42,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 09:22:42,375 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-02-17 09:22:42,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:22:42,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-17 09:22:42,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 129 proven. 165 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-17 09:22:42,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 84 proven. 210 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-17 09:22:42,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216426300] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:42,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:42,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2023-02-17 09:22:42,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967866415] [2023-02-17 09:22:42,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:42,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-17 09:22:42,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:42,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-17 09:22:42,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1578, Unknown=0, NotChecked=0, Total=1806 [2023-02-17 09:22:42,869 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) [2023-02-17 09:22:44,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:44,168 INFO L93 Difference]: Finished difference Result 887 states and 1065 transitions. [2023-02-17 09:22:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-02-17 09:22:44,169 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 [2023-02-17 09:22:44,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:44,171 INFO L225 Difference]: With dead ends: 887 [2023-02-17 09:22:44,172 INFO L226 Difference]: Without dead ends: 689 [2023-02-17 09:22:44,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1713, Invalid=7029, Unknown=0, NotChecked=0, Total=8742 [2023-02-17 09:22:44,175 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 240 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 09:22:44,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 30 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-17 09:22:44,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-02-17 09:22:44,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 628. [2023-02-17 09:22:44,221 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) [2023-02-17 09:22:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 752 transitions. [2023-02-17 09:22:44,223 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 752 transitions. Word has length 60 [2023-02-17 09:22:44,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:44,223 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 752 transitions. [2023-02-17 09:22:44,223 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) [2023-02-17 09:22:44,223 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 752 transitions. [2023-02-17 09:22:44,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-17 09:22:44,224 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:44,225 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 6, 5, 5, 5, 1, 1, 1, 1] [2023-02-17 09:22:44,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-17 09:22:44,429 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 [2023-02-17 09:22:44,430 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)] === [2023-02-17 09:22:44,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:44,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1561347668, now seen corresponding path program 6 times [2023-02-17 09:22:44,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:44,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592599430] [2023-02-17 09:22:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:44,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 26 proven. 325 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-17 09:22:44,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:44,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592599430] [2023-02-17 09:22:44,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592599430] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:44,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014805716] [2023-02-17 09:22:44,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 09:22:44,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:44,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:44,617 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) [2023-02-17 09:22:44,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 09:22:44,664 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-02-17 09:22:44,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:22:44,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 09:22:44,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-17 09:22:44,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 18 proven. 320 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-17 09:22:44,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014805716] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:44,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:44,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2023-02-17 09:22:44,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043617833] [2023-02-17 09:22:44,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:44,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-17 09:22:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:44,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-17 09:22:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2023-02-17 09:22:44,986 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) [2023-02-17 09:22:46,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:46,591 INFO L93 Difference]: Finished difference Result 1792 states and 2140 transitions. [2023-02-17 09:22:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-02-17 09:22:46,592 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 [2023-02-17 09:22:46,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:46,594 INFO L225 Difference]: With dead ends: 1792 [2023-02-17 09:22:46,594 INFO L226 Difference]: Without dead ends: 616 [2023-02-17 09:22:46,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3289 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2203, Invalid=9139, Unknown=0, NotChecked=0, Total=11342 [2023-02-17 09:22:46,600 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 [2023-02-17 09:22:46,600 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] [2023-02-17 09:22:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2023-02-17 09:22:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 543. [2023-02-17 09:22:46,638 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) [2023-02-17 09:22:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 647 transitions. [2023-02-17 09:22:46,639 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 647 transitions. Word has length 66 [2023-02-17 09:22:46,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:46,639 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 647 transitions. [2023-02-17 09:22:46,640 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) [2023-02-17 09:22:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 647 transitions. [2023-02-17 09:22:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-17 09:22:46,645 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:46,646 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 7, 6, 6, 6, 1, 1, 1, 1] [2023-02-17 09:22:46,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-17 09:22:46,857 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 [2023-02-17 09:22:46,857 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)] === [2023-02-17 09:22:46,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:46,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1270477891, now seen corresponding path program 7 times [2023-02-17 09:22:46,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:46,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160095569] [2023-02-17 09:22:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:46,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 283 proven. 112 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-02-17 09:22:47,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:47,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160095569] [2023-02-17 09:22:47,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160095569] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:47,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831685391] [2023-02-17 09:22:47,051 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 09:22:47,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:47,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:47,053 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) [2023-02-17 09:22:47,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 09:22:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:47,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 09:22:47,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 302 proven. 93 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-02-17 09:22:47,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 283 proven. 112 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-02-17 09:22:47,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831685391] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:47,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:47,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2023-02-17 09:22:47,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376625693] [2023-02-17 09:22:47,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:47,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-17 09:22:47,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:47,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-17 09:22:47,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-02-17 09:22:47,315 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) [2023-02-17 09:22:47,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:47,847 INFO L93 Difference]: Finished difference Result 988 states and 1173 transitions. [2023-02-17 09:22:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-17 09:22:47,847 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 [2023-02-17 09:22:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:47,849 INFO L225 Difference]: With dead ends: 988 [2023-02-17 09:22:47,849 INFO L226 Difference]: Without dead ends: 574 [2023-02-17 09:22:47,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 131 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=740, Invalid=2566, Unknown=0, NotChecked=0, Total=3306 [2023-02-17 09:22:47,851 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 110 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-02-17 09:22:47,852 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] [2023-02-17 09:22:47,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-02-17 09:22:47,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 536. [2023-02-17 09:22:47,901 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) [2023-02-17 09:22:47,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 630 transitions. [2023-02-17 09:22:47,902 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 630 transitions. Word has length 76 [2023-02-17 09:22:47,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:47,903 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 630 transitions. [2023-02-17 09:22:47,903 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) [2023-02-17 09:22:47,903 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 630 transitions. [2023-02-17 09:22:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-02-17 09:22:47,904 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:47,904 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 7, 6, 6, 6, 1, 1, 1, 1] [2023-02-17 09:22:47,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-17 09:22:48,110 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 [2023-02-17 09:22:48,110 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)] === [2023-02-17 09:22:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1458865890, now seen corresponding path program 8 times [2023-02-17 09:22:48,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:48,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029802302] [2023-02-17 09:22:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:48,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 482 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-02-17 09:22:48,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:48,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029802302] [2023-02-17 09:22:48,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029802302] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:48,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998962950] [2023-02-17 09:22:48,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:22:48,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:48,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:48,301 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) [2023-02-17 09:22:48,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 09:22:48,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:22:48,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:22:48,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 09:22:48,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 523 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-17 09:22:48,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:48,635 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 1 proven. 522 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-17 09:22:48,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998962950] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:48,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:48,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 32 [2023-02-17 09:22:48,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141709510] [2023-02-17 09:22:48,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:48,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-17 09:22:48,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:48,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-17 09:22:48,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 09:22:48,637 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) [2023-02-17 09:22:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:52,381 INFO L93 Difference]: Finished difference Result 2085 states and 2451 transitions. [2023-02-17 09:22:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-02-17 09:22:52,381 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 [2023-02-17 09:22:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:52,388 INFO L225 Difference]: With dead ends: 2085 [2023-02-17 09:22:52,388 INFO L226 Difference]: Without dead ends: 2084 [2023-02-17 09:22:52,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25436 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=11094, Invalid=43896, Unknown=0, NotChecked=0, Total=54990 [2023-02-17 09:22:52,393 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 [2023-02-17 09:22:52,394 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] [2023-02-17 09:22:52,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2023-02-17 09:22:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 910. [2023-02-17 09:22:52,494 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) [2023-02-17 09:22:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1075 transitions. [2023-02-17 09:22:52,496 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1075 transitions. Word has length 79 [2023-02-17 09:22:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:52,496 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1075 transitions. [2023-02-17 09:22:52,496 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) [2023-02-17 09:22:52,497 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1075 transitions. [2023-02-17 09:22:52,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-17 09:22:52,498 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:52,498 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 1, 1, 1, 1] [2023-02-17 09:22:52,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 09:22:52,703 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 [2023-02-17 09:22:52,703 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)] === [2023-02-17 09:22:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:52,704 INFO L85 PathProgramCache]: Analyzing trace with hash -775133941, now seen corresponding path program 9 times [2023-02-17 09:22:52,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:52,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187918257] [2023-02-17 09:22:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:52,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-17 09:22:52,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:52,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187918257] [2023-02-17 09:22:52,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187918257] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:52,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297814205] [2023-02-17 09:22:52,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:22:52,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:52,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:52,888 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) [2023-02-17 09:22:52,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 09:22:52,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-02-17 09:22:52,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:22:52,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 09:22:52,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-17 09:22:53,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-17 09:22:53,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297814205] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:53,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:53,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-02-17 09:22:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374605584] [2023-02-17 09:22:53,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:53,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-17 09:22:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-17 09:22:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 09:22:53,270 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) [2023-02-17 09:22:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:55,793 INFO L93 Difference]: Finished difference Result 6549 states and 7821 transitions. [2023-02-17 09:22:55,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2023-02-17 09:22:55,793 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 [2023-02-17 09:22:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:55,809 INFO L225 Difference]: With dead ends: 6549 [2023-02-17 09:22:55,809 INFO L226 Difference]: Without dead ends: 6548 [2023-02-17 09:22:55,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 132 SyntacticMatches, 10 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13150 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=7558, Invalid=23242, Unknown=0, NotChecked=0, Total=30800 [2023-02-17 09:22:55,813 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 [2023-02-17 09:22:55,814 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] [2023-02-17 09:22:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2023-02-17 09:22:56,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 3033. [2023-02-17 09:22:56,161 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) [2023-02-17 09:22:56,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 3599 transitions. [2023-02-17 09:22:56,168 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 3599 transitions. Word has length 80 [2023-02-17 09:22:56,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:56,168 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 3599 transitions. [2023-02-17 09:22:56,168 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) [2023-02-17 09:22:56,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 3599 transitions. [2023-02-17 09:22:56,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-17 09:22:56,171 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:56,171 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 11, 10, 10, 10, 1, 1, 1, 1] [2023-02-17 09:22:56,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-17 09:22:56,376 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 [2023-02-17 09:22:56,376 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)] === [2023-02-17 09:22:56,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:56,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1074429624, now seen corresponding path program 10 times [2023-02-17 09:22:56,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:56,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846707606] [2023-02-17 09:22:56,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:56,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:22:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 227 proven. 518 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-02-17 09:22:56,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:22:56,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846707606] [2023-02-17 09:22:56,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846707606] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:22:56,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203008026] [2023-02-17 09:22:56,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 09:22:56,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:22:56,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:22:56,617 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) [2023-02-17 09:22:56,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-17 09:22:56,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 09:22:56,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:22:56,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 09:22:56,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:22:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 300 proven. 51 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2023-02-17 09:22:56,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:22:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 303 proven. 48 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2023-02-17 09:22:57,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203008026] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:22:57,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:22:57,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 39 [2023-02-17 09:22:57,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36165810] [2023-02-17 09:22:57,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:22:57,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-17 09:22:57,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:22:57,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-17 09:22:57,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2023-02-17 09:22:57,014 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) [2023-02-17 09:22:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:22:59,441 INFO L93 Difference]: Finished difference Result 4930 states and 5838 transitions. [2023-02-17 09:22:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-02-17 09:22:59,442 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 [2023-02-17 09:22:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:22:59,450 INFO L225 Difference]: With dead ends: 4930 [2023-02-17 09:22:59,450 INFO L226 Difference]: Without dead ends: 3079 [2023-02-17 09:22:59,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5308 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3122, Invalid=16338, Unknown=0, NotChecked=0, Total=19460 [2023-02-17 09:22:59,455 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 320 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 09:22:59,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 24 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-17 09:22:59,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2023-02-17 09:22:59,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 2642. [2023-02-17 09:22:59,767 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) [2023-02-17 09:22:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3048 transitions. [2023-02-17 09:22:59,772 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3048 transitions. Word has length 95 [2023-02-17 09:22:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:22:59,773 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 3048 transitions. [2023-02-17 09:22:59,773 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) [2023-02-17 09:22:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3048 transitions. [2023-02-17 09:22:59,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-02-17 09:22:59,776 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:22:59,776 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 12, 11, 11, 11, 1, 1, 1, 1] [2023-02-17 09:22:59,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-17 09:22:59,981 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 [2023-02-17 09:22:59,981 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)] === [2023-02-17 09:22:59,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:22:59,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1143389319, now seen corresponding path program 11 times [2023-02-17 09:22:59,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:22:59,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387999450] [2023-02-17 09:22:59,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:22:59,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:22:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:23:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 0 proven. 767 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-02-17 09:23:00,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:23:00,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387999450] [2023-02-17 09:23:00,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387999450] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:23:00,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785839052] [2023-02-17 09:23:00,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 09:23:00,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:23:00,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:23:00,156 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) [2023-02-17 09:23:00,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-17 09:23:00,207 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-02-17 09:23:00,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:23:00,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-17 09:23:00,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:23:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 173 proven. 751 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-17 09:23:00,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:23:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 129 proven. 795 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-17 09:23:00,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785839052] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:23:00,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:23:00,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 21] total 46 [2023-02-17 09:23:00,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656592765] [2023-02-17 09:23:00,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:23:00,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-17 09:23:00,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:23:00,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-17 09:23:00,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1837, Unknown=0, NotChecked=0, Total=2070 [2023-02-17 09:23:00,864 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) [2023-02-17 09:23:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:23:03,749 INFO L93 Difference]: Finished difference Result 5327 states and 6173 transitions. [2023-02-17 09:23:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-02-17 09:23:03,749 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 [2023-02-17 09:23:03,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:23:03,757 INFO L225 Difference]: With dead ends: 5327 [2023-02-17 09:23:03,758 INFO L226 Difference]: Without dead ends: 4167 [2023-02-17 09:23:03,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 171 SyntacticMatches, 7 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9679 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3555, Invalid=26201, Unknown=0, NotChecked=0, Total=29756 [2023-02-17 09:23:03,760 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 504 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-17 09:23:03,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 27 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-17 09:23:03,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2023-02-17 09:23:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 1920. [2023-02-17 09:23:04,007 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) [2023-02-17 09:23:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2225 transitions. [2023-02-17 09:23:04,010 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2225 transitions. Word has length 105 [2023-02-17 09:23:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:23:04,011 INFO L495 AbstractCegarLoop]: Abstraction has 1920 states and 2225 transitions. [2023-02-17 09:23:04,011 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) [2023-02-17 09:23:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2225 transitions. [2023-02-17 09:23:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-02-17 09:23:04,014 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:23:04,014 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 12, 11, 11, 11, 1, 1, 1, 1] [2023-02-17 09:23:04,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-17 09:23:04,219 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 [2023-02-17 09:23:04,219 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)] === [2023-02-17 09:23:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:23:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -544946177, now seen corresponding path program 12 times [2023-02-17 09:23:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:23:04,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802859948] [2023-02-17 09:23:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:23:04,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:23:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:23:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 988 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-02-17 09:23:04,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:23:04,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802859948] [2023-02-17 09:23:04,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802859948] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:23:04,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159200359] [2023-02-17 09:23:04,421 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 09:23:04,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:23:04,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:23:04,423 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) [2023-02-17 09:23:04,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-17 09:23:04,480 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-02-17 09:23:04,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:23:04,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 09:23:04,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:23:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 176 proven. 708 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2023-02-17 09:23:04,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:23:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 18 proven. 866 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2023-02-17 09:23:04,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159200359] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:23:04,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:23:04,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2023-02-17 09:23:04,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093200885] [2023-02-17 09:23:04,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:23:04,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-17 09:23:04,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:23:04,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-17 09:23:04,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1039, Unknown=0, NotChecked=0, Total=1260 [2023-02-17 09:23:04,799 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) [2023-02-17 09:23:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:23:10,969 INFO L93 Difference]: Finished difference Result 4018 states and 4719 transitions. [2023-02-17 09:23:10,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 316 states. [2023-02-17 09:23:10,970 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 [2023-02-17 09:23:10,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:23:10,979 INFO L225 Difference]: With dead ends: 4018 [2023-02-17 09:23:10,980 INFO L226 Difference]: Without dead ends: 4017 [2023-02-17 09:23:10,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 208 SyntacticMatches, 5 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56019 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=20455, Invalid=94127, Unknown=0, NotChecked=0, Total=114582 [2023-02-17 09:23:10,985 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 516 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 09:23:10,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 22 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-17 09:23:10,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2023-02-17 09:23:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 1564. [2023-02-17 09:23:11,274 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) [2023-02-17 09:23:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 1824 transitions. [2023-02-17 09:23:11,276 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 1824 transitions. Word has length 117 [2023-02-17 09:23:11,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:23:11,276 INFO L495 AbstractCegarLoop]: Abstraction has 1564 states and 1824 transitions. [2023-02-17 09:23:11,276 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) [2023-02-17 09:23:11,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 1824 transitions. [2023-02-17 09:23:11,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-02-17 09:23:11,279 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:23:11,279 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 16, 15, 15, 15, 1, 1, 1, 1] [2023-02-17 09:23:11,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-17 09:23:11,485 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 [2023-02-17 09:23:11,486 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)] === [2023-02-17 09:23:11,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:23:11,486 INFO L85 PathProgramCache]: Analyzing trace with hash 694191114, now seen corresponding path program 13 times [2023-02-17 09:23:11,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:23:11,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413472949] [2023-02-17 09:23:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:23:11,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:23:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:23:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 719 proven. 92 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2023-02-17 09:23:11,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:23:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413472949] [2023-02-17 09:23:11,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413472949] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:23:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417187763] [2023-02-17 09:23:11,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 09:23:11,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:23:11,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:23:11,689 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) [2023-02-17 09:23:11,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-17 09:23:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:23:11,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-17 09:23:11,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:23:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 1000 proven. 1034 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-02-17 09:23:12,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:23:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2190 backedges. 949 proven. 1085 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-02-17 09:23:12,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417187763] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:23:12,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:23:12,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 22] total 47 [2023-02-17 09:23:12,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330789685] [2023-02-17 09:23:12,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:23:12,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-02-17 09:23:12,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:23:12,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-02-17 09:23:12,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1895, Unknown=0, NotChecked=0, Total=2162 [2023-02-17 09:23:12,429 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) [2023-02-17 09:23:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:23:16,344 INFO L93 Difference]: Finished difference Result 3116 states and 3638 transitions. [2023-02-17 09:23:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-02-17 09:23:16,345 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 [2023-02-17 09:23:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:23:16,351 INFO L225 Difference]: With dead ends: 3116 [2023-02-17 09:23:16,351 INFO L226 Difference]: Without dead ends: 2118 [2023-02-17 09:23:16,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 274 SyntacticMatches, 7 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14126 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=6823, Invalid=34183, Unknown=0, NotChecked=0, Total=41006 [2023-02-17 09:23:16,355 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 [2023-02-17 09:23:16,356 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] [2023-02-17 09:23:16,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2023-02-17 09:23:16,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1668. [2023-02-17 09:23:16,704 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) [2023-02-17 09:23:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1941 transitions. [2023-02-17 09:23:16,705 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1941 transitions. Word has length 154 [2023-02-17 09:23:16,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:23:16,706 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 1941 transitions. [2023-02-17 09:23:16,706 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) [2023-02-17 09:23:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1941 transitions. [2023-02-17 09:23:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-02-17 09:23:16,708 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:23:16,708 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 22, 22, 22, 1, 1, 1, 1] [2023-02-17 09:23:16,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-02-17 09:23:16,915 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 [2023-02-17 09:23:16,916 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)] === [2023-02-17 09:23:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:23:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1772549365, now seen corresponding path program 14 times [2023-02-17 09:23:16,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:23:16,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748276397] [2023-02-17 09:23:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:23:16,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:23:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:23:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-17 09:23:17,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:23:17,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748276397] [2023-02-17 09:23:17,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748276397] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:23:17,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918210235] [2023-02-17 09:23:17,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:23:17,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:23:17,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:23:17,437 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) [2023-02-17 09:23:17,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-17 09:23:17,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:23:17,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:23:17,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-17 09:23:17,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:23:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-17 09:23:17,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:23:18,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-17 09:23:18,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918210235] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:23:18,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:23:18,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2023-02-17 09:23:18,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904444321] [2023-02-17 09:23:18,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:23:18,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-02-17 09:23:18,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:23:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-02-17 09:23:18,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=1986, Unknown=0, NotChecked=0, Total=3192 [2023-02-17 09:23:18,403 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) [2023-02-17 09:23:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:23:35,242 INFO L93 Difference]: Finished difference Result 31629 states and 37511 transitions. [2023-02-17 09:23:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 371 states. [2023-02-17 09:23:35,243 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 [2023-02-17 09:23:35,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:23:35,311 INFO L225 Difference]: With dead ends: 31629 [2023-02-17 09:23:35,311 INFO L226 Difference]: Without dead ends: 31628 [2023-02-17 09:23:35,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 276 SyntacticMatches, 22 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65819 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=34780, Invalid=109240, Unknown=0, NotChecked=0, Total=144020 [2023-02-17 09:23:35,326 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 636 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 09:23:35,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 55 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-17 09:23:35,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31628 states. [2023-02-17 09:23:36,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31628 to 4782. [2023-02-17 09:23:36,042 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) [2023-02-17 09:23:36,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 5612 transitions. [2023-02-17 09:23:36,046 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 5612 transitions. Word has length 164 [2023-02-17 09:23:36,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:23:36,047 INFO L495 AbstractCegarLoop]: Abstraction has 4782 states and 5612 transitions. [2023-02-17 09:23:36,047 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) [2023-02-17 09:23:36,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 5612 transitions. [2023-02-17 09:23:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-02-17 09:23:36,050 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:23:36,050 INFO L195 NwaCegarLoop]: trace histogram [37, 37, 36, 16, 15, 15, 15, 1, 1, 1, 1] [2023-02-17 09:23:36,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-17 09:23:36,255 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 [2023-02-17 09:23:36,256 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)] === [2023-02-17 09:23:36,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:23:36,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1878403147, now seen corresponding path program 15 times [2023-02-17 09:23:36,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:23:36,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780212104] [2023-02-17 09:23:36,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:23:36,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:23:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:23:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 736 proven. 2175 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-17 09:23:36,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:23:36,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780212104] [2023-02-17 09:23:36,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780212104] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:23:36,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626233105] [2023-02-17 09:23:36,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:23:36,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:23:36,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:23:36,976 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) [2023-02-17 09:23:36,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-17 09:23:37,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 09:23:37,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:23:37,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-17 09:23:37,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:23:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 1269 proven. 177 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2023-02-17 09:23:37,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:23:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 72 proven. 1374 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2023-02-17 09:23:38,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626233105] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:23:38,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:23:38,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 19, 19] total 65 [2023-02-17 09:23:38,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976909144] [2023-02-17 09:23:38,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:23:38,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-02-17 09:23:38,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:23:38,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-02-17 09:23:38,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=3792, Unknown=0, NotChecked=0, Total=4160 [2023-02-17 09:23:38,092 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) [2023-02-17 09:23:51,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:23:51,426 INFO L93 Difference]: Finished difference Result 14834 states and 18355 transitions. [2023-02-17 09:23:51,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 341 states. [2023-02-17 09:23:51,428 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 [2023-02-17 09:23:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:23:51,448 INFO L225 Difference]: With dead ends: 14834 [2023-02-17 09:23:51,449 INFO L226 Difference]: Without dead ends: 11099 [2023-02-17 09:23:51,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61625 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=20938, Invalid=141874, Unknown=0, NotChecked=0, Total=162812 [2023-02-17 09:23:51,466 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1572 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6363 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.7s IncrementalHoareTripleChecker+Time [2023-02-17 09:23:51,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 39 Invalid, 6967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 6363 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-17 09:23:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2023-02-17 09:23:53,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 9322. [2023-02-17 09:23:53,052 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) [2023-02-17 09:23:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9322 states to 9322 states and 11694 transitions. [2023-02-17 09:23:53,067 INFO L78 Accepts]: Start accepts. Automaton has 9322 states and 11694 transitions. Word has length 175 [2023-02-17 09:23:53,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:23:53,068 INFO L495 AbstractCegarLoop]: Abstraction has 9322 states and 11694 transitions. [2023-02-17 09:23:53,068 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) [2023-02-17 09:23:53,068 INFO L276 IsEmpty]: Start isEmpty. Operand 9322 states and 11694 transitions. [2023-02-17 09:23:53,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-02-17 09:23:53,073 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:23:53,073 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 32, 24, 23, 23, 23, 1, 1, 1, 1] [2023-02-17 09:23:53,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-17 09:23:53,278 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 [2023-02-17 09:23:53,279 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)] === [2023-02-17 09:23:53,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:23:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1422549621, now seen corresponding path program 16 times [2023-02-17 09:23:53,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:23:53,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124973629] [2023-02-17 09:23:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:23:53,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:23:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:23:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 0 proven. 2972 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2023-02-17 09:23:53,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:23:53,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124973629] [2023-02-17 09:23:53,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124973629] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:23:53,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143089874] [2023-02-17 09:23:53,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 09:23:53,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:23:53,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:23:53,790 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) [2023-02-17 09:23:53,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-17 09:23:53,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 09:23:53,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:23:53,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-17 09:23:53,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:23:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 224 proven. 2858 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-02-17 09:23:54,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:23:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 16 proven. 3066 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-02-17 09:23:54,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143089874] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:23:54,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:23:54,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 26] total 56 [2023-02-17 09:23:54,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267883067] [2023-02-17 09:23:54,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:23:54,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-02-17 09:23:54,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:23:54,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-02-17 09:23:54,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=790, Invalid=2402, Unknown=0, NotChecked=0, Total=3192 [2023-02-17 09:23:54,766 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) [2023-02-17 09:24:31,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:31,028 INFO L93 Difference]: Finished difference Result 62371 states and 81429 transitions. [2023-02-17 09:24:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 782 states. [2023-02-17 09:24:31,029 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 [2023-02-17 09:24:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:31,132 INFO L225 Difference]: With dead ends: 62371 [2023-02-17 09:24:31,132 INFO L226 Difference]: Without dead ends: 62370 [2023-02-17 09:24:31,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1183 GetRequests, 339 SyntacticMatches, 18 SemanticMatches, 826 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399686 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=156977, Invalid=527779, Unknown=0, NotChecked=0, Total=684756 [2023-02-17 09:24:31,179 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1240 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 855 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:31,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 24 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-17 09:24:31,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62370 states. [2023-02-17 09:24:37,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62370 to 18704. [2023-02-17 09:24:37,558 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) [2023-02-17 09:24:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18704 states to 18704 states and 22763 transitions. [2023-02-17 09:24:37,588 INFO L78 Accepts]: Start accepts. Automaton has 18704 states and 22763 transitions. Word has length 195 [2023-02-17 09:24:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:37,589 INFO L495 AbstractCegarLoop]: Abstraction has 18704 states and 22763 transitions. [2023-02-17 09:24:37,589 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) [2023-02-17 09:24:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 18704 states and 22763 transitions. [2023-02-17 09:24:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-02-17 09:24:37,611 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:37,611 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 56, 37, 36, 36, 36, 1, 1, 1, 1] [2023-02-17 09:24:37,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:37,816 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 [2023-02-17 09:24:37,816 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)] === [2023-02-17 09:24:37,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1730861666, now seen corresponding path program 17 times [2023-02-17 09:24:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:37,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573274370] [2023-02-17 09:24:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:37,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9396 backedges. 0 proven. 7677 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2023-02-17 09:24:38,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:38,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573274370] [2023-02-17 09:24:38,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573274370] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:38,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816992133] [2023-02-17 09:24:38,701 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 09:24:38,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:38,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:38,703 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) [2023-02-17 09:24:38,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-17 09:24:38,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2023-02-17 09:24:38,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:38,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 09:24:38,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:39,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9396 backedges. 5991 proven. 2825 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-02-17 09:24:39,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9396 backedges. 5819 proven. 2997 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-02-17 09:24:40,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816992133] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:40,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:40,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 39, 39] total 100 [2023-02-17 09:24:40,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188092775] [2023-02-17 09:24:40,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:40,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-02-17 09:24:40,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:40,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-02-17 09:24:40,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1438, Invalid=8462, Unknown=0, NotChecked=0, Total=9900 [2023-02-17 09:24:40,918 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) [2023-02-17 09:25:14,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:25:14,704 INFO L93 Difference]: Finished difference Result 37981 states and 45745 transitions. [2023-02-17 09:25:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 688 states. [2023-02-17 09:25:14,705 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 [2023-02-17 09:25:14,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:25:14,745 INFO L225 Difference]: With dead ends: 37981 [2023-02-17 09:25:14,745 INFO L226 Difference]: Without dead ends: 27343 [2023-02-17 09:25:14,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1371 GetRequests, 581 SyntacticMatches, 8 SemanticMatches, 782 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249282 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=49787, Invalid=564085, Unknown=0, NotChecked=0, Total=613872 [2023-02-17 09:25:14,790 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4351 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 10093 mSolverCounterSat, 1777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 11870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1777 IncrementalHoareTripleChecker+Valid, 10093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-02-17 09:25:14,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 28 Invalid, 11870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1777 Valid, 10093 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-02-17 09:25:14,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27343 states. [2023-02-17 09:25:23,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27343 to 21017. [2023-02-17 09:25:23,622 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) [2023-02-17 09:25:23,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21017 states to 21017 states and 25328 transitions. [2023-02-17 09:25:23,651 INFO L78 Accepts]: Start accepts. Automaton has 21017 states and 25328 transitions. Word has length 319 [2023-02-17 09:25:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:25:23,652 INFO L495 AbstractCegarLoop]: Abstraction has 21017 states and 25328 transitions. [2023-02-17 09:25:23,652 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) [2023-02-17 09:25:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 21017 states and 25328 transitions. [2023-02-17 09:25:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-02-17 09:25:23,677 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:25:23,677 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 46, 46, 46, 1, 1, 1, 1] [2023-02-17 09:25:23,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-17 09:25:23,883 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 [2023-02-17 09:25:23,883 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)] === [2023-02-17 09:25:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:25:23,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1611311349, now seen corresponding path program 18 times [2023-02-17 09:25:23,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:25:23,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641780656] [2023-02-17 09:25:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:25:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:25:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:25:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-02-17 09:25:25,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:25:25,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641780656] [2023-02-17 09:25:25,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641780656] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:25:25,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560697699] [2023-02-17 09:25:25,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 09:25:25,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:25,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:25:25,603 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) [2023-02-17 09:25:25,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-17 09:25:25,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 66 check-sat command(s) [2023-02-17 09:25:25,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:25:25,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-17 09:25:25,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:25:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-02-17 09:25:26,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:25:28,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9778 backedges. 0 proven. 9732 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-02-17 09:25:28,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560697699] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:25:28,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:25:28,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 104 [2023-02-17 09:25:28,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391039818] [2023-02-17 09:25:28,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:25:28,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-02-17 09:25:28,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:25:28,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-02-17 09:25:28,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4686, Invalid=6234, Unknown=0, NotChecked=0, Total=10920 [2023-02-17 09:25:28,889 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)