/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-simple/sll2c_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 14:20:19,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 14:20:19,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 14:20:19,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 14:20:19,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 14:20:19,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 14:20:19,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 14:20:19,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 14:20:19,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 14:20:19,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 14:20:19,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 14:20:19,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 14:20:19,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 14:20:19,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 14:20:19,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 14:20:19,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 14:20:19,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 14:20:19,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 14:20:19,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 14:20:19,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 14:20:19,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 14:20:19,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 14:20:19,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 14:20:19,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 14:20:19,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 14:20:19,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 14:20:19,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 14:20:19,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 14:20:19,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 14:20:19,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 14:20:19,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 14:20:19,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 14:20:19,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 14:20:19,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 14:20:19,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 14:20:19,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 14:20:19,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 14:20:19,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 14:20:19,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 14:20:19,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 14:20:19,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 14:20:19,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 14:20:19,520 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 14:20:19,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 14:20:19,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 14:20:19,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 14:20:19,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 14:20:19,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 14:20:19,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 14:20:19,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 14:20:19,523 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 14:20:19,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 14:20:19,524 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 14:20:19,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 14:20:19,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 14:20:19,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 14:20:19,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 14:20:19,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 14:20:19,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 14:20:19,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 14:20:19,526 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 14:20:19,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 14:20:19,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 14:20:19,526 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 14:20:19,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 14:20:19,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 14:20:19,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 14:20:19,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 14:20:19,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:20:19,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 14:20:19,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 14:20:19,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 14:20:19,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 14:20:19,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 14:20:19,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 14:20:19,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 14:20:19,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 14:20:19,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 14:20:19,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 14:20:19,949 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 14:20:19,950 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 14:20:19,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2c_insert_equal.i [2022-10-16 14:20:20,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/407221ce4/9e587a9fa39842228f138e9b60c4fecb/FLAGa0637a3e1 [2022-10-16 14:20:20,851 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 14:20:20,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_insert_equal.i [2022-10-16 14:20:20,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/407221ce4/9e587a9fa39842228f138e9b60c4fecb/FLAGa0637a3e1 [2022-10-16 14:20:21,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/407221ce4/9e587a9fa39842228f138e9b60c4fecb [2022-10-16 14:20:21,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 14:20:21,172 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 14:20:21,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 14:20:21,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 14:20:21,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 14:20:21,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:21,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13438ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21, skipping insertion in model container [2022-10-16 14:20:21,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:21,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 14:20:21,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 14:20:21,787 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_insert_equal.i[24601,24614] [2022-10-16 14:20:21,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:20:21,801 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 14:20:21,885 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_insert_equal.i[24601,24614] [2022-10-16 14:20:21,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:20:21,936 INFO L208 MainTranslator]: Completed translation [2022-10-16 14:20:21,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21 WrapperNode [2022-10-16 14:20:21,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 14:20:21,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 14:20:21,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 14:20:21,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 14:20:21,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:21,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:22,045 INFO L138 Inliner]: procedures = 127, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 151 [2022-10-16 14:20:22,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 14:20:22,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 14:20:22,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 14:20:22,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 14:20:22,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:22,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:22,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:22,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:22,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:22,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:22,109 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:22,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:22,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 14:20:22,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 14:20:22,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 14:20:22,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 14:20:22,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (1/1) ... [2022-10-16 14:20:22,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:20:22,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:22,169 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) [2022-10-16 14:20:22,194 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 [2022-10-16 14:20:22,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 14:20:22,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 14:20:22,240 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-10-16 14:20:22,241 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-10-16 14:20:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 14:20:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 14:20:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 14:20:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 14:20:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 14:20:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 14:20:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 14:20:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 14:20:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 14:20:22,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 14:20:22,381 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 14:20:22,384 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 14:20:22,866 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 14:20:22,874 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 14:20:22,874 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-16 14:20:22,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:22 BoogieIcfgContainer [2022-10-16 14:20:22,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 14:20:22,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 14:20:22,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 14:20:22,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 14:20:22,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:20:21" (1/3) ... [2022-10-16 14:20:22,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc15069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:22, skipping insertion in model container [2022-10-16 14:20:22,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:20:21" (2/3) ... [2022-10-16 14:20:22,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc15069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:20:22, skipping insertion in model container [2022-10-16 14:20:22,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:20:22" (3/3) ... [2022-10-16 14:20:22,897 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_insert_equal.i [2022-10-16 14:20:22,918 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 14:20:22,918 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-16 14:20:22,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 14:20:22,987 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45cb2760, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 14:20:22,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-16 14:20:22,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 40 states have (on average 1.6) internal successors, (64), 50 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:23,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 14:20:23,002 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:23,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:23,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:23,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:23,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1553048330, now seen corresponding path program 1 times [2022-10-16 14:20:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:23,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178390862] [2022-10-16 14:20:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:23,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:20:23,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:23,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178390862] [2022-10-16 14:20:23,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178390862] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:23,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:23,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 14:20:23,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935560956] [2022-10-16 14:20:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:23,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:20:23,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:20:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:20:23,411 INFO L87 Difference]: Start difference. First operand has 55 states, 40 states have (on average 1.6) internal successors, (64), 50 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:20:23,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:23,509 INFO L93 Difference]: Finished difference Result 99 states and 125 transitions. [2022-10-16 14:20:23,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:20:23,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-10-16 14:20:23,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:23,521 INFO L225 Difference]: With dead ends: 99 [2022-10-16 14:20:23,521 INFO L226 Difference]: Without dead ends: 45 [2022-10-16 14:20:23,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:20:23,530 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:23,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-16 14:20:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-10-16 14:20:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 40 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-10-16 14:20:23,579 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 13 [2022-10-16 14:20:23,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:23,581 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-10-16 14:20:23,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:20:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-10-16 14:20:23,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 14:20:23,584 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:23,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:23,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 14:20:23,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:23,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1552750420, now seen corresponding path program 1 times [2022-10-16 14:20:23,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:23,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916058193] [2022-10-16 14:20:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:23,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:20:23,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:23,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916058193] [2022-10-16 14:20:23,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916058193] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:23,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:23,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:20:23,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637371429] [2022-10-16 14:20:23,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:23,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:20:23,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:23,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:20:23,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:20:23,912 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:20:24,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:24,012 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2022-10-16 14:20:24,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:20:24,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-10-16 14:20:24,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:24,015 INFO L225 Difference]: With dead ends: 86 [2022-10-16 14:20:24,015 INFO L226 Difference]: Without dead ends: 52 [2022-10-16 14:20:24,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:20:24,018 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 5 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:24,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 122 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:24,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-10-16 14:20:24,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2022-10-16 14:20:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.4375) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-10-16 14:20:24,029 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 13 [2022-10-16 14:20:24,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:24,030 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-10-16 14:20:24,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:20:24,031 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-10-16 14:20:24,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-16 14:20:24,031 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:24,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:24,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 14:20:24,032 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:24,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1032017119, now seen corresponding path program 1 times [2022-10-16 14:20:24,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:24,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711452666] [2022-10-16 14:20:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:24,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:20:24,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:24,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711452666] [2022-10-16 14:20:24,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711452666] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:24,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:24,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:20:24,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53024230] [2022-10-16 14:20:24,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:24,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:24,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:24,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:24,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:24,262 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:20:24,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:24,359 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2022-10-16 14:20:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:20:24,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-10-16 14:20:24,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:24,361 INFO L225 Difference]: With dead ends: 52 [2022-10-16 14:20:24,361 INFO L226 Difference]: Without dead ends: 51 [2022-10-16 14:20:24,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:20:24,363 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 5 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:24,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 160 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-10-16 14:20:24,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2022-10-16 14:20:24,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.411764705882353) internal successors, (48), 43 states have internal predecessors, (48), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:20:24,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-10-16 14:20:24,373 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 18 [2022-10-16 14:20:24,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:24,374 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-10-16 14:20:24,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:20:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-10-16 14:20:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-16 14:20:24,375 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:24,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:24,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 14:20:24,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:24,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1927759568, now seen corresponding path program 1 times [2022-10-16 14:20:24,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:24,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073418998] [2022-10-16 14:20:24,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:24,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:20:24,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:24,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073418998] [2022-10-16 14:20:24,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073418998] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:24,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:24,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:20:24,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032786061] [2022-10-16 14:20:24,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:24,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:24,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:24,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:24,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:24,540 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:20:24,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:24,617 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-10-16 14:20:24,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:20:24,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-10-16 14:20:24,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:24,619 INFO L225 Difference]: With dead ends: 51 [2022-10-16 14:20:24,620 INFO L226 Difference]: Without dead ends: 50 [2022-10-16 14:20:24,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:20:24,622 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:24,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 162 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-10-16 14:20:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-10-16 14:20:24,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.4) internal successors, (49), 44 states have internal predecessors, (49), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:20:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-10-16 14:20:24,631 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 19 [2022-10-16 14:20:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:24,632 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-10-16 14:20:24,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:20:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-10-16 14:20:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 14:20:24,633 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:24,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:24,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 14:20:24,634 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:24,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1925976638, now seen corresponding path program 1 times [2022-10-16 14:20:24,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:24,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876601808] [2022-10-16 14:20:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:24,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:20:24,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:24,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876601808] [2022-10-16 14:20:24,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876601808] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:24,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660751807] [2022-10-16 14:20:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:24,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:24,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:24,927 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) [2022-10-16 14:20:24,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 14:20:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 14:20:25,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 14:20:25,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:25,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660751807] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:25,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:25,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-10-16 14:20:25,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293234861] [2022-10-16 14:20:25,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:25,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:20:25,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:25,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:20:25,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:20:25,123 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:20:25,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:25,136 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-10-16 14:20:25,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:20:25,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-10-16 14:20:25,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:25,138 INFO L225 Difference]: With dead ends: 50 [2022-10-16 14:20:25,138 INFO L226 Difference]: Without dead ends: 44 [2022-10-16 14:20:25,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:20:25,140 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:25,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 52 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:25,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-10-16 14:20:25,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-10-16 14:20:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 33 states have (on average 1.303030303030303) internal successors, (43), 38 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 14:20:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2022-10-16 14:20:25,149 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 23 [2022-10-16 14:20:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:25,149 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2022-10-16 14:20:25,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:20:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2022-10-16 14:20:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 14:20:25,151 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:25,151 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:25,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:25,366 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 [2022-10-16 14:20:25,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:25,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:25,369 INFO L85 PathProgramCache]: Analyzing trace with hash 232256119, now seen corresponding path program 1 times [2022-10-16 14:20:25,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:25,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301407231] [2022-10-16 14:20:25,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:25,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 14:20:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 14:20:25,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:25,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301407231] [2022-10-16 14:20:25,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301407231] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:25,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652296166] [2022-10-16 14:20:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:25,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:25,626 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) [2022-10-16 14:20:25,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 14:20:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:25,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 14:20:25,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 14:20:25,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:25,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652296166] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:25,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:25,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-10-16 14:20:25,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025200269] [2022-10-16 14:20:25,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:25,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:25,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:25,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:25,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:20:25,887 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:20:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:25,917 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-10-16 14:20:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:20:25,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-10-16 14:20:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:25,919 INFO L225 Difference]: With dead ends: 73 [2022-10-16 14:20:25,919 INFO L226 Difference]: Without dead ends: 38 [2022-10-16 14:20:25,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:20:25,921 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:25,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 92 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-16 14:20:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-10-16 14:20:25,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2022-10-16 14:20:25,928 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2022-10-16 14:20:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:25,929 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2022-10-16 14:20:25,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:20:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2022-10-16 14:20:25,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-16 14:20:25,930 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:25,931 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:25,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:26,144 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 [2022-10-16 14:20:26,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:26,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:26,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1658934216, now seen corresponding path program 1 times [2022-10-16 14:20:26,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:26,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288106702] [2022-10-16 14:20:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:26,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:26,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:26,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:20:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-16 14:20:26,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:26,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288106702] [2022-10-16 14:20:26,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288106702] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:26,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335148314] [2022-10-16 14:20:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:26,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:26,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:26,435 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) [2022-10-16 14:20:26,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 14:20:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:26,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 14:20:26,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:26,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:26,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335148314] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:26,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:26,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-10-16 14:20:26,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379478410] [2022-10-16 14:20:26,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:26,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:26,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:26,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:26,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-10-16 14:20:26,656 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:20:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:26,691 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-10-16 14:20:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:20:26,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-10-16 14:20:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:26,695 INFO L225 Difference]: With dead ends: 38 [2022-10-16 14:20:26,695 INFO L226 Difference]: Without dead ends: 37 [2022-10-16 14:20:26,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-10-16 14:20:26,700 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 40 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:26,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 97 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:26,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-10-16 14:20:26,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-10-16 14:20:26,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-10-16 14:20:26,715 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 33 [2022-10-16 14:20:26,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:26,718 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-10-16 14:20:26,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:20:26,718 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-10-16 14:20:26,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 14:20:26,722 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:26,722 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:26,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:26,936 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 [2022-10-16 14:20:26,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -112646782, now seen corresponding path program 1 times [2022-10-16 14:20:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:26,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784884023] [2022-10-16 14:20:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:20:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:27,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:27,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784884023] [2022-10-16 14:20:27,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784884023] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:27,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:27,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 14:20:27,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80328167] [2022-10-16 14:20:27,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:27,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:20:27,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:27,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:20:27,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:20:27,080 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:27,132 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-10-16 14:20:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:20:27,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-10-16 14:20:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:27,133 INFO L225 Difference]: With dead ends: 37 [2022-10-16 14:20:27,134 INFO L226 Difference]: Without dead ends: 36 [2022-10-16 14:20:27,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:20:27,135 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:27,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:27,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-10-16 14:20:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-10-16 14:20:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 31 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:27,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-10-16 14:20:27,142 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 34 [2022-10-16 14:20:27,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:27,142 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-10-16 14:20:27,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:27,143 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-10-16 14:20:27,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 14:20:27,144 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:27,144 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:27,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 14:20:27,145 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:27,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1540093576, now seen corresponding path program 1 times [2022-10-16 14:20:27,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:27,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924792216] [2022-10-16 14:20:27,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:27,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:20:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:27,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:27,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924792216] [2022-10-16 14:20:27,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924792216] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:27,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:27,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:20:27,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037413173] [2022-10-16 14:20:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:27,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:20:27,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:27,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:20:27,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:20:27,281 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:27,329 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2022-10-16 14:20:27,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:20:27,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-10-16 14:20:27,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:27,330 INFO L225 Difference]: With dead ends: 56 [2022-10-16 14:20:27,331 INFO L226 Difference]: Without dead ends: 47 [2022-10-16 14:20:27,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:20:27,332 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 13 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:27,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 91 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-10-16 14:20:27,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2022-10-16 14:20:27,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.1875) internal successors, (38), 33 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-10-16 14:20:27,340 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 37 [2022-10-16 14:20:27,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:27,340 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-10-16 14:20:27,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-10-16 14:20:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 14:20:27,342 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:27,342 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:27,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 14:20:27,343 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash -963757026, now seen corresponding path program 1 times [2022-10-16 14:20:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:27,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159363006] [2022-10-16 14:20:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:27,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:20:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:27,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:27,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159363006] [2022-10-16 14:20:27,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159363006] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:27,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:20:27,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:20:27,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116403224] [2022-10-16 14:20:27,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:27,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 14:20:27,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:27,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 14:20:27,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:20:27,554 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:27,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:27,626 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-10-16 14:20:27,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:20:27,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-10-16 14:20:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:27,628 INFO L225 Difference]: With dead ends: 44 [2022-10-16 14:20:27,628 INFO L226 Difference]: Without dead ends: 42 [2022-10-16 14:20:27,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:20:27,629 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:27,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 125 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:27,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-16 14:20:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-10-16 14:20:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 37 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:27,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-10-16 14:20:27,649 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 39 [2022-10-16 14:20:27,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:27,649 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-10-16 14:20:27,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-10-16 14:20:27,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-16 14:20:27,651 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:27,652 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:27,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-16 14:20:27,652 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:27,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:27,653 INFO L85 PathProgramCache]: Analyzing trace with hash 74305522, now seen corresponding path program 1 times [2022-10-16 14:20:27,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:27,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230263530] [2022-10-16 14:20:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:27,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:20:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:27,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:27,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230263530] [2022-10-16 14:20:27,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230263530] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:27,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805748308] [2022-10-16 14:20:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:27,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:27,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:27,935 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) [2022-10-16 14:20:27,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 14:20:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:20:28,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:28,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:28,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805748308] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:28,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:28,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-10-16 14:20:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527507103] [2022-10-16 14:20:28,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:28,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 14:20:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:28,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 14:20:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-10-16 14:20:28,280 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:28,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:28,417 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2022-10-16 14:20:28,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 14:20:28,418 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-10-16 14:20:28,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:28,420 INFO L225 Difference]: With dead ends: 64 [2022-10-16 14:20:28,420 INFO L226 Difference]: Without dead ends: 63 [2022-10-16 14:20:28,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-10-16 14:20:28,422 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 23 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:28,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 264 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-10-16 14:20:28,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2022-10-16 14:20:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.150943396226415) internal successors, (61), 54 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:28,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2022-10-16 14:20:28,438 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 45 [2022-10-16 14:20:28,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:28,439 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2022-10-16 14:20:28,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:28,439 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2022-10-16 14:20:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 14:20:28,446 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:28,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:28,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-16 14:20:28,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:28,661 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:28,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:28,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1991496010, now seen corresponding path program 1 times [2022-10-16 14:20:28,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:28,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096987188] [2022-10-16 14:20:28,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:28,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:28,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:20:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 14:20:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:29,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096987188] [2022-10-16 14:20:29,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096987188] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:29,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214801194] [2022-10-16 14:20:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:29,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:29,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:29,031 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) [2022-10-16 14:20:29,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 14:20:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 14:20:29,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:29,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 14:20:29,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214801194] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:20:29,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 14:20:29,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-10-16 14:20:29,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805783836] [2022-10-16 14:20:29,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:20:29,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:20:29,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:29,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:20:29,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-16 14:20:29,280 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:29,319 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2022-10-16 14:20:29,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:20:29,320 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-10-16 14:20:29,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:29,321 INFO L225 Difference]: With dead ends: 59 [2022-10-16 14:20:29,321 INFO L226 Difference]: Without dead ends: 58 [2022-10-16 14:20:29,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-10-16 14:20:29,322 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:29,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 172 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:20:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-10-16 14:20:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-10-16 14:20:29,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:29,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2022-10-16 14:20:29,345 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 46 [2022-10-16 14:20:29,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:29,346 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2022-10-16 14:20:29,346 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:29,346 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2022-10-16 14:20:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-16 14:20:29,347 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:29,347 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:29,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:29,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 14:20:29,562 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:29,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1783467666, now seen corresponding path program 2 times [2022-10-16 14:20:29,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:29,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087917963] [2022-10-16 14:20:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:29,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:20:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-10-16 14:20:29,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:29,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087917963] [2022-10-16 14:20:29,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087917963] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:29,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166259681] [2022-10-16 14:20:29,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:20:29,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:29,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:29,872 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) [2022-10-16 14:20:29,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 14:20:30,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:20:30,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:20:30,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 14:20:30,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:30,261 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:30,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 14:20:30,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166259681] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:30,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:30,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 26 [2022-10-16 14:20:30,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475381080] [2022-10-16 14:20:30,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:30,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 14:20:30,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:30,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 14:20:30,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-10-16 14:20:30,472 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 25 states have internal predecessors, (102), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 14:20:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:30,923 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2022-10-16 14:20:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 14:20:30,923 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 25 states have internal predecessors, (102), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2022-10-16 14:20:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:30,925 INFO L225 Difference]: With dead ends: 126 [2022-10-16 14:20:30,925 INFO L226 Difference]: Without dead ends: 94 [2022-10-16 14:20:30,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=1728, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 14:20:30,928 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 146 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:30,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 213 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-16 14:20:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2022-10-16 14:20:30,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0454545454545454) internal successors, (92), 88 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:30,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2022-10-16 14:20:30,945 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 63 [2022-10-16 14:20:30,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:30,946 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2022-10-16 14:20:30,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 25 states have internal predecessors, (102), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 14:20:30,946 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2022-10-16 14:20:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-16 14:20:30,949 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:30,949 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:30,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:31,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:31,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:31,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:31,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1345854396, now seen corresponding path program 1 times [2022-10-16 14:20:31,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:31,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66434200] [2022-10-16 14:20:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:31,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:20:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:20:31,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:31,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66434200] [2022-10-16 14:20:31,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66434200] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:31,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684749162] [2022-10-16 14:20:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:31,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:31,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:31,960 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) [2022-10-16 14:20:31,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 14:20:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:32,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-16 14:20:32,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:20:32,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:32,902 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:20:32,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684749162] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:32,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:32,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 48 [2022-10-16 14:20:32,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641020754] [2022-10-16 14:20:32,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:32,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-10-16 14:20:32,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:32,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-10-16 14:20:32,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 14:20:32,907 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand has 49 states, 48 states have (on average 3.25) internal successors, (156), 48 states have internal predecessors, (156), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:33,499 INFO L93 Difference]: Finished difference Result 167 states and 183 transitions. [2022-10-16 14:20:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-16 14:20:33,500 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 3.25) internal successors, (156), 48 states have internal predecessors, (156), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2022-10-16 14:20:33,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:33,501 INFO L225 Difference]: With dead ends: 167 [2022-10-16 14:20:33,501 INFO L226 Difference]: Without dead ends: 166 [2022-10-16 14:20:33,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1384, Invalid=3586, Unknown=0, NotChecked=0, Total=4970 [2022-10-16 14:20:33,505 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 219 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:33,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 355 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:20:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-10-16 14:20:33,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2022-10-16 14:20:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.025) internal successors, (164), 160 states have internal predecessors, (164), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 170 transitions. [2022-10-16 14:20:33,517 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 170 transitions. Word has length 100 [2022-10-16 14:20:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:33,518 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 170 transitions. [2022-10-16 14:20:33,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 3.25) internal successors, (156), 48 states have internal predecessors, (156), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:33,519 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 170 transitions. [2022-10-16 14:20:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-10-16 14:20:33,520 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:33,520 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:33,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:33,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:33,736 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:33,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:33,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1759412820, now seen corresponding path program 2 times [2022-10-16 14:20:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:33,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233611549] [2022-10-16 14:20:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:33,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:36,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:36,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:20:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:20:36,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:36,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233611549] [2022-10-16 14:20:36,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233611549] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:36,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106222057] [2022-10-16 14:20:36,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:20:36,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:36,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:36,242 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) [2022-10-16 14:20:36,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 14:20:36,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:20:36,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:20:36,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-16 14:20:36,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:20:36,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1469 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:20:38,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106222057] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:20:38,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:20:38,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 96 [2022-10-16 14:20:38,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303575811] [2022-10-16 14:20:38,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:38,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-10-16 14:20:38,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-10-16 14:20:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2353, Invalid=6959, Unknown=0, NotChecked=0, Total=9312 [2022-10-16 14:20:38,912 INFO L87 Difference]: Start difference. First operand 165 states and 170 transitions. Second operand has 97 states, 96 states have (on average 3.125) internal successors, (300), 96 states have internal predecessors, (300), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:20:40,856 INFO L93 Difference]: Finished difference Result 311 states and 339 transitions. [2022-10-16 14:20:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-10-16 14:20:40,857 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 3.125) internal successors, (300), 96 states have internal predecessors, (300), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 172 [2022-10-16 14:20:40,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:20:40,859 INFO L225 Difference]: With dead ends: 311 [2022-10-16 14:20:40,859 INFO L226 Difference]: Without dead ends: 310 [2022-10-16 14:20:40,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4452 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5644, Invalid=14662, Unknown=0, NotChecked=0, Total=20306 [2022-10-16 14:20:40,867 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 475 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 14:20:40,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 452 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 14:20:40,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-10-16 14:20:40,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2022-10-16 14:20:40,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 304 states have (on average 1.013157894736842) internal successors, (308), 304 states have internal predecessors, (308), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:20:40,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 314 transitions. [2022-10-16 14:20:40,886 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 314 transitions. Word has length 172 [2022-10-16 14:20:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:20:40,887 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 314 transitions. [2022-10-16 14:20:40,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 3.125) internal successors, (300), 96 states have internal predecessors, (300), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:20:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 314 transitions. [2022-10-16 14:20:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-10-16 14:20:40,892 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:20:40,892 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:20:40,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 14:20:41,098 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,SelfDestructingSolverStorable14 [2022-10-16 14:20:41,099 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:20:41,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:20:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash -705498740, now seen corresponding path program 3 times [2022-10-16 14:20:41,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:20:41,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013759197] [2022-10-16 14:20:41,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:20:41,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:20:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:20:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:48,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:20:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:48,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:20:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:20:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6365 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:20:48,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:20:48,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013759197] [2022-10-16 14:20:48,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013759197] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:48,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955510383] [2022-10-16 14:20:48,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:20:48,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:20:48,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:20:48,236 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) [2022-10-16 14:20:48,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 14:20:50,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-10-16 14:20:50,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:20:50,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 179 conjunts are in the unsatisfiable core [2022-10-16 14:20:50,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:20:50,570 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-16 14:20:50,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-10-16 14:20:50,666 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 14:20:50,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2022-10-16 14:20:50,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:50,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-10-16 14:20:50,945 INFO L356 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-10-16 14:20:50,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 38 [2022-10-16 14:20:51,297 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-10-16 14:20:51,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 33 [2022-10-16 14:20:51,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-10-16 14:20:51,658 INFO L356 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2022-10-16 14:20:51,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 34 treesize of output 52 [2022-10-16 14:20:51,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-16 14:20:51,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-16 14:20:51,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-10-16 14:20:52,319 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-16 14:20:52,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 60 [2022-10-16 14:20:52,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-10-16 14:20:53,102 INFO L356 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-10-16 14:20:53,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 57 [2022-10-16 14:20:53,136 INFO L356 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2022-10-16 14:20:53,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 47 [2022-10-16 14:20:53,148 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-16 14:20:53,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-10-16 14:20:53,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:53,566 INFO L356 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-10-16 14:20:53,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 117 treesize of output 97 [2022-10-16 14:20:53,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:53,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:53,603 INFO L356 Elim1Store]: treesize reduction 60, result has 41.7 percent of original size [2022-10-16 14:20:53,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 68 [2022-10-16 14:20:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:53,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:53,669 INFO L356 Elim1Store]: treesize reduction 32, result has 64.0 percent of original size [2022-10-16 14:20:53,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 60 treesize of output 94 [2022-10-16 14:20:54,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:54,510 INFO L356 Elim1Store]: treesize reduction 137, result has 15.4 percent of original size [2022-10-16 14:20:54,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 208 treesize of output 110 [2022-10-16 14:20:54,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:54,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:54,530 INFO L356 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2022-10-16 14:20:54,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 56 [2022-10-16 14:20:56,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:56,381 INFO L356 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2022-10-16 14:20:56,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 53 [2022-10-16 14:20:56,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:20:56,394 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-16 14:20:56,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 22 [2022-10-16 14:20:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6365 backedges. 788 proven. 30 refuted. 0 times theorem prover too weak. 5547 trivial. 0 not checked. [2022-10-16 14:20:56,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:20:59,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955510383] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:20:59,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 14:20:59,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 27] total 123 [2022-10-16 14:20:59,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268198215] [2022-10-16 14:20:59,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 14:20:59,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2022-10-16 14:20:59,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:20:59,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2022-10-16 14:20:59,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2450, Invalid=15106, Unknown=0, NotChecked=0, Total=17556 [2022-10-16 14:20:59,227 INFO L87 Difference]: Start difference. First operand 309 states and 314 transitions. Second operand has 123 states, 121 states have (on average 2.958677685950413) internal successors, (358), 116 states have internal predecessors, (358), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 14:21:04,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:21:04,202 INFO L93 Difference]: Finished difference Result 608 states and 616 transitions. [2022-10-16 14:21:04,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-10-16 14:21:04,203 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 121 states have (on average 2.958677685950413) internal successors, (358), 116 states have internal predecessors, (358), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 316 [2022-10-16 14:21:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:21:04,206 INFO L225 Difference]: With dead ends: 608 [2022-10-16 14:21:04,206 INFO L226 Difference]: Without dead ends: 327 [2022-10-16 14:21:04,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 575 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6090 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=2920, Invalid=19430, Unknown=0, NotChecked=0, Total=22350 [2022-10-16 14:21:04,213 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 14:21:04,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 454 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 661 Invalid, 0 Unknown, 102 Unchecked, 0.7s Time] [2022-10-16 14:21:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-10-16 14:21:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 324. [2022-10-16 14:21:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 318 states have (on average 1.0157232704402517) internal successors, (323), 318 states have internal predecessors, (323), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:21:04,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 329 transitions. [2022-10-16 14:21:04,234 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 329 transitions. Word has length 316 [2022-10-16 14:21:04,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:21:04,235 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 329 transitions. [2022-10-16 14:21:04,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 121 states have (on average 2.958677685950413) internal successors, (358), 116 states have internal predecessors, (358), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-16 14:21:04,236 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 329 transitions. [2022-10-16 14:21:04,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-10-16 14:21:04,241 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:21:04,241 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:21:04,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 14:21:04,455 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,SelfDestructingSolverStorable15 [2022-10-16 14:21:04,456 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:21:04,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:21:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1827685626, now seen corresponding path program 1 times [2022-10-16 14:21:04,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:21:04,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748559338] [2022-10-16 14:21:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:21:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:21:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:21:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:04,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:21:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:21:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6644 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6643 trivial. 0 not checked. [2022-10-16 14:21:05,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:21:05,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748559338] [2022-10-16 14:21:05,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748559338] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:21:05,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335635343] [2022-10-16 14:21:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:21:05,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:21:05,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:21:05,013 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) [2022-10-16 14:21:05,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 14:21:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:05,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 97 conjunts are in the unsatisfiable core [2022-10-16 14:21:05,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:21:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6644 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:21:09,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:21:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6644 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:21:18,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335635343] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:21:18,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:21:18,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 97, 97] total 198 [2022-10-16 14:21:18,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491108454] [2022-10-16 14:21:18,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:21:18,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2022-10-16 14:21:18,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:21:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2022-10-16 14:21:18,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9513, Invalid=29493, Unknown=0, NotChecked=0, Total=39006 [2022-10-16 14:21:18,791 INFO L87 Difference]: Start difference. First operand 324 states and 329 transitions. Second operand has 198 states, 198 states have (on average 3.095959595959596) internal successors, (613), 197 states have internal predecessors, (613), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:21:27,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:21:27,247 INFO L93 Difference]: Finished difference Result 912 states and 968 transitions. [2022-10-16 14:21:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2022-10-16 14:21:27,250 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 198 states have (on average 3.095959595959596) internal successors, (613), 197 states have internal predecessors, (613), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 324 [2022-10-16 14:21:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:21:27,253 INFO L225 Difference]: With dead ends: 912 [2022-10-16 14:21:27,253 INFO L226 Difference]: Without dead ends: 624 [2022-10-16 14:21:27,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18146 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=23581, Invalid=63149, Unknown=0, NotChecked=0, Total=86730 [2022-10-16 14:21:27,263 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1119 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 14:21:27,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 737 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 14:21:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-10-16 14:21:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 623. [2022-10-16 14:21:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 617 states have (on average 1.0097244732576987) internal successors, (623), 617 states have internal predecessors, (623), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:21:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 629 transitions. [2022-10-16 14:21:27,298 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 629 transitions. Word has length 324 [2022-10-16 14:21:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:21:27,299 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 629 transitions. [2022-10-16 14:21:27,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 198 states have (on average 3.095959595959596) internal successors, (613), 197 states have internal predecessors, (613), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:21:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 629 transitions. [2022-10-16 14:21:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-10-16 14:21:27,314 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:21:27,314 INFO L195 NwaCegarLoop]: trace histogram [97, 97, 96, 96, 96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:21:27,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 14:21:27,529 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,SelfDestructingSolverStorable16 [2022-10-16 14:21:27,529 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:21:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:21:27,531 INFO L85 PathProgramCache]: Analyzing trace with hash -544280104, now seen corresponding path program 1 times [2022-10-16 14:21:27,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:21:27,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478650300] [2022-10-16 14:21:27,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:21:27,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:21:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:55,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:21:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:21:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-16 14:21:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 27665 backedges. 0 proven. 27648 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:21:55,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:21:55,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478650300] [2022-10-16 14:21:55,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478650300] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:21:55,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606652412] [2022-10-16 14:21:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:21:55,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:21:55,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:21:55,549 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) [2022-10-16 14:21:55,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 14:21:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:21:56,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 2192 conjuncts, 195 conjunts are in the unsatisfiable core [2022-10-16 14:21:56,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:21:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 27665 backedges. 0 proven. 27648 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:21:57,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:22:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 27665 backedges. 0 proven. 27648 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-16 14:22:34,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606652412] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:22:34,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:22:34,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 195, 195] total 392 [2022-10-16 14:22:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035369017] [2022-10-16 14:22:34,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:22:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 393 states [2022-10-16 14:22:34,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:22:34,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 393 interpolants. [2022-10-16 14:22:34,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38613, Invalid=115443, Unknown=0, NotChecked=0, Total=154056 [2022-10-16 14:22:34,210 INFO L87 Difference]: Start difference. First operand 623 states and 629 transitions. Second operand has 393 states, 392 states have (on average 3.0357142857142856) internal successors, (1190), 392 states have internal predecessors, (1190), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:23:14,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:23:14,707 INFO L93 Difference]: Finished difference Result 1213 states and 1316 transitions. [2022-10-16 14:23:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 392 states. [2022-10-16 14:23:14,708 INFO L78 Accepts]: Start accepts. Automaton has has 393 states, 392 states have (on average 3.0357142857142856) internal successors, (1190), 392 states have internal predecessors, (1190), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 618 [2022-10-16 14:23:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:23:14,716 INFO L225 Difference]: With dead ends: 1213 [2022-10-16 14:23:14,716 INFO L226 Difference]: Without dead ends: 1212 [2022-10-16 14:23:14,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1629 GetRequests, 1044 SyntacticMatches, 0 SemanticMatches, 585 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76232 ImplicationChecksByTransitivity, 75.1s TimeCoverageRelationStatistics Valid=95554, Invalid=248428, Unknown=0, NotChecked=0, Total=343982 [2022-10-16 14:23:14,735 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2100 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 14:23:14,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2100 Valid, 1060 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 14:23:14,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-10-16 14:23:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1211. [2022-10-16 14:23:14,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1205 states have (on average 1.0049792531120332) internal successors, (1211), 1205 states have internal predecessors, (1211), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:23:14,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1217 transitions. [2022-10-16 14:23:14,792 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1217 transitions. Word has length 618 [2022-10-16 14:23:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:23:14,793 INFO L495 AbstractCegarLoop]: Abstraction has 1211 states and 1217 transitions. [2022-10-16 14:23:14,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 393 states, 392 states have (on average 3.0357142857142856) internal successors, (1190), 392 states have internal predecessors, (1190), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 14:23:14,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1217 transitions. [2022-10-16 14:23:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2022-10-16 14:23:14,852 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:23:14,852 INFO L195 NwaCegarLoop]: trace histogram [195, 195, 194, 194, 194, 194, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:23:14,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 14:23:15,066 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,SelfDestructingSolverStorable17 [2022-10-16 14:23:15,067 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-16 14:23:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:23:15,069 INFO L85 PathProgramCache]: Analyzing trace with hash 107336448, now seen corresponding path program 2 times [2022-10-16 14:23:15,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:23:15,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963080150] [2022-10-16 14:23:15,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:23:15,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:23:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat