./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/byte_add_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/byte_add_2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b7afe619831a9e012e7620d6e0b03d3495f1fd3efb2bdea6bfa4bb1568774e6 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:53:04,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:53:04,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:53:04,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:53:04,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:53:04,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:53:04,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:53:04,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:53:04,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:53:04,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:53:04,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:53:04,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:53:04,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:53:04,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:53:04,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:53:04,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:53:04,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:53:04,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:53:04,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:53:04,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:53:04,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:53:04,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:53:04,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:53:04,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:53:04,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:53:04,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:53:04,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:53:04,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:53:04,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:53:04,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:53:04,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:53:04,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:53:04,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:53:04,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:53:04,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:53:04,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:53:04,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:53:04,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:53:04,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:53:04,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:53:04,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:53:04,635 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-15 16:53:04,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:53:04,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:53:04,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:53:04,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:53:04,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:53:04,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:53:04,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:53:04,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:53:04,670 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:53:04,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:53:04,671 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:53:04,671 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:53:04,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:53:04,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:53:04,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:53:04,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 16:53:04,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:53:04,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 16:53:04,673 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-15 16:53:04,673 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:53:04,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:53:04,673 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:53:04,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 16:53:04,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:53:04,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:53:04,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:53:04,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:53:04,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:53:04,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:53:04,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 16:53:04,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:53:04,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:53:04,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 16:53:04,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:53:04,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b7afe619831a9e012e7620d6e0b03d3495f1fd3efb2bdea6bfa4bb1568774e6 [2021-12-15 16:53:04,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:53:04,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:53:04,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:53:04,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:53:04,907 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:53:04,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/byte_add_2-1.i [2021-12-15 16:53:04,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fc6efd8b/3851857eed5b450ab9735f2a1f596d3e/FLAGae0e93742 [2021-12-15 16:53:05,347 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:53:05,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/byte_add_2-1.i [2021-12-15 16:53:05,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fc6efd8b/3851857eed5b450ab9735f2a1f596d3e/FLAGae0e93742 [2021-12-15 16:53:05,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fc6efd8b/3851857eed5b450ab9735f2a1f596d3e [2021-12-15 16:53:05,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:53:05,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:53:05,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:53:05,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:53:05,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:53:05,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:53:05" (1/1) ... [2021-12-15 16:53:05,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df32687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:05, skipping insertion in model container [2021-12-15 16:53:05,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:53:05" (1/1) ... [2021-12-15 16:53:05,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:53:05,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:53:05,953 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/bitvector/byte_add_2-1.i[1168,1181] [2021-12-15 16:53:06,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:53:06,025 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:53:06,041 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/bitvector/byte_add_2-1.i[1168,1181] [2021-12-15 16:53:06,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:53:06,083 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:53:06,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06 WrapperNode [2021-12-15 16:53:06,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:53:06,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:53:06,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:53:06,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:53:06,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06" (1/1) ... [2021-12-15 16:53:06,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06" (1/1) ... [2021-12-15 16:53:06,124 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 161 [2021-12-15 16:53:06,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:53:06,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:53:06,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:53:06,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:53:06,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06" (1/1) ... [2021-12-15 16:53:06,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06" (1/1) ... [2021-12-15 16:53:06,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06" (1/1) ... [2021-12-15 16:53:06,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06" (1/1) ... [2021-12-15 16:53:06,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06" (1/1) ... [2021-12-15 16:53:06,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06" (1/1) ... [2021-12-15 16:53:06,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06" (1/1) ... [2021-12-15 16:53:06,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:53:06,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:53:06,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:53:06,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:53:06,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06" (1/1) ... [2021-12-15 16:53:06,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:53:06,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:06,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 16:53:06,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 16:53:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 16:53:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 16:53:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:53:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:53:06,276 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:53:06,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:53:06,505 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:53:06,511 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:53:06,511 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-15 16:53:06,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:53:06 BoogieIcfgContainer [2021-12-15 16:53:06,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:53:06,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:53:06,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:53:06,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:53:06,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:53:05" (1/3) ... [2021-12-15 16:53:06,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c49a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:53:06, skipping insertion in model container [2021-12-15 16:53:06,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:06" (2/3) ... [2021-12-15 16:53:06,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c49a8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:53:06, skipping insertion in model container [2021-12-15 16:53:06,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:53:06" (3/3) ... [2021-12-15 16:53:06,532 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_2-1.i [2021-12-15 16:53:06,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:53:06,536 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-12-15 16:53:06,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:53:06,597 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 16:53:06,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-12-15 16:53:06,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 75 states have (on average 1.9066666666666667) internal successors, (143), 113 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-15 16:53:06,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:06,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-15 16:53:06,633 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:06,643 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-12-15 16:53:06,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:06,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625911269] [2021-12-15 16:53:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:06,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:06,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:06,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625911269] [2021-12-15 16:53:06,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625911269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:06,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:06,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-15 16:53:06,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107858382] [2021-12-15 16:53:06,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:06,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 16:53:06,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:06,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 16:53:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 16:53:06,834 INFO L87 Difference]: Start difference. First operand has 114 states, 75 states have (on average 1.9066666666666667) internal successors, (143), 113 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:06,851 INFO L93 Difference]: Finished difference Result 135 states and 177 transitions. [2021-12-15 16:53:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 16:53:06,854 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-12-15 16:53:06,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:06,860 INFO L225 Difference]: With dead ends: 135 [2021-12-15 16:53:06,860 INFO L226 Difference]: Without dead ends: 69 [2021-12-15 16:53:06,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 16:53:06,865 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:06,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-15 16:53:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-12-15 16:53:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2021-12-15 16:53:06,892 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 4 [2021-12-15 16:53:06,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:06,892 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2021-12-15 16:53:06,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:06,892 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2021-12-15 16:53:06,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 16:53:06,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:06,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:06,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 16:53:06,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:06,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:06,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1944470950, now seen corresponding path program 1 times [2021-12-15 16:53:06,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:06,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812064298] [2021-12-15 16:53:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:06,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:07,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:07,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812064298] [2021-12-15 16:53:07,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812064298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:07,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:07,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:53:07,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693978320] [2021-12-15 16:53:07,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:07,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:53:07,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:07,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:53:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:07,005 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:07,138 INFO L93 Difference]: Finished difference Result 145 states and 212 transitions. [2021-12-15 16:53:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:53:07,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-15 16:53:07,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:07,141 INFO L225 Difference]: With dead ends: 145 [2021-12-15 16:53:07,141 INFO L226 Difference]: Without dead ends: 98 [2021-12-15 16:53:07,142 INFO L932 BasicCegarLoop]: 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 [2021-12-15 16:53:07,143 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 30 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:07,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 121 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:53:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-15 16:53:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-12-15 16:53:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 93 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2021-12-15 16:53:07,157 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 13 [2021-12-15 16:53:07,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:07,157 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2021-12-15 16:53:07,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,158 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2021-12-15 16:53:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 16:53:07,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:07,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:07,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 16:53:07,160 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash 565405448, now seen corresponding path program 1 times [2021-12-15 16:53:07,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:07,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714172740] [2021-12-15 16:53:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:07,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 16:53:07,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:07,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714172740] [2021-12-15 16:53:07,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714172740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:07,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:07,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:53:07,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36393358] [2021-12-15 16:53:07,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:07,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:53:07,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:53:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:53:07,297 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:07,498 INFO L93 Difference]: Finished difference Result 238 states and 317 transitions. [2021-12-15 16:53:07,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:53:07,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-15 16:53:07,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:07,506 INFO L225 Difference]: With dead ends: 238 [2021-12-15 16:53:07,506 INFO L226 Difference]: Without dead ends: 174 [2021-12-15 16:53:07,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:53:07,513 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 127 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:07,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 291 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:53:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-12-15 16:53:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 107. [2021-12-15 16:53:07,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.320754716981132) internal successors, (140), 106 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2021-12-15 16:53:07,537 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 20 [2021-12-15 16:53:07,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:07,538 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2021-12-15 16:53:07,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2021-12-15 16:53:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-15 16:53:07,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:07,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:07,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 16:53:07,541 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:07,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:07,542 INFO L85 PathProgramCache]: Analyzing trace with hash 75768748, now seen corresponding path program 1 times [2021-12-15 16:53:07,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:07,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214308449] [2021-12-15 16:53:07,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:07,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 16:53:07,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:07,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214308449] [2021-12-15 16:53:07,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214308449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:07,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:07,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:53:07,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428374467] [2021-12-15 16:53:07,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:07,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:53:07,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:53:07,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:53:07,679 INFO L87 Difference]: Start difference. First operand 107 states and 140 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:07,840 INFO L93 Difference]: Finished difference Result 237 states and 315 transitions. [2021-12-15 16:53:07,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:53:07,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-15 16:53:07,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:07,842 INFO L225 Difference]: With dead ends: 237 [2021-12-15 16:53:07,842 INFO L226 Difference]: Without dead ends: 180 [2021-12-15 16:53:07,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:53:07,844 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 116 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:07,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 281 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:53:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-15 16:53:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 120. [2021-12-15 16:53:07,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.2941176470588236) internal successors, (154), 119 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2021-12-15 16:53:07,852 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 23 [2021-12-15 16:53:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:07,852 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2021-12-15 16:53:07,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,853 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2021-12-15 16:53:07,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-15 16:53:07,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:07,854 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-15 16:53:07,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 16:53:07,854 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:07,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:07,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2113419709, now seen corresponding path program 1 times [2021-12-15 16:53:07,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:07,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823720596] [2021-12-15 16:53:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:07,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:07,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 16:53:07,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:07,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823720596] [2021-12-15 16:53:07,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823720596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:07,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:07,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:53:07,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677564616] [2021-12-15 16:53:07,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:07,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:53:07,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:07,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:53:07,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:07,906 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:07,910 INFO L93 Difference]: Finished difference Result 178 states and 233 transitions. [2021-12-15 16:53:07,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:53:07,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-15 16:53:07,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:07,911 INFO L225 Difference]: With dead ends: 178 [2021-12-15 16:53:07,911 INFO L226 Difference]: Without dead ends: 86 [2021-12-15 16:53:07,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:07,912 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 77 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:07,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 83 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:07,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-15 16:53:07,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-12-15 16:53:07,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 85 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2021-12-15 16:53:07,918 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 111 transitions. Word has length 26 [2021-12-15 16:53:07,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:07,918 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 111 transitions. [2021-12-15 16:53:07,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,918 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 111 transitions. [2021-12-15 16:53:07,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-15 16:53:07,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:07,919 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-12-15 16:53:07,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 16:53:07,919 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:07,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1554994799, now seen corresponding path program 1 times [2021-12-15 16:53:07,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:07,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442750187] [2021-12-15 16:53:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:07,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:07,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:07,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442750187] [2021-12-15 16:53:07,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442750187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:07,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:07,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:53:07,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414708564] [2021-12-15 16:53:07,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:07,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:53:07,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:07,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:53:07,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:07,983 INFO L87 Difference]: Start difference. First operand 86 states and 111 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:07,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:07,992 INFO L93 Difference]: Finished difference Result 110 states and 144 transitions. [2021-12-15 16:53:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:53:07,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-15 16:53:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:07,993 INFO L225 Difference]: With dead ends: 110 [2021-12-15 16:53:07,993 INFO L226 Difference]: Without dead ends: 97 [2021-12-15 16:53:07,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:07,996 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 4 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:07,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 163 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:07,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-15 16:53:08,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-12-15 16:53:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.3125) internal successors, (126), 96 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:08,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 126 transitions. [2021-12-15 16:53:08,002 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 126 transitions. Word has length 32 [2021-12-15 16:53:08,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:08,002 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 126 transitions. [2021-12-15 16:53:08,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:08,002 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 126 transitions. [2021-12-15 16:53:08,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-15 16:53:08,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:08,004 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-12-15 16:53:08,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 16:53:08,004 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:08,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:08,004 INFO L85 PathProgramCache]: Analyzing trace with hash 543877549, now seen corresponding path program 1 times [2021-12-15 16:53:08,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:08,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595464045] [2021-12-15 16:53:08,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:08,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:08,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:08,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595464045] [2021-12-15 16:53:08,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595464045] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:08,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136201237] [2021-12-15 16:53:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:08,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:08,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:08,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:53:08,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 16:53:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:08,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:53:08,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:08,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:53:08,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136201237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:08,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 16:53:08,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-12-15 16:53:08,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512500725] [2021-12-15 16:53:08,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:08,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:53:08,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:08,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:53:08,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-15 16:53:08,321 INFO L87 Difference]: Start difference. First operand 97 states and 126 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:08,544 INFO L93 Difference]: Finished difference Result 213 states and 311 transitions. [2021-12-15 16:53:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:53:08,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-15 16:53:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:08,546 INFO L225 Difference]: With dead ends: 213 [2021-12-15 16:53:08,546 INFO L226 Difference]: Without dead ends: 159 [2021-12-15 16:53:08,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-15 16:53:08,547 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 46 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:08,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 132 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:53:08,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-15 16:53:08,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 138. [2021-12-15 16:53:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.2554744525547445) internal successors, (172), 137 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:08,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 172 transitions. [2021-12-15 16:53:08,554 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 172 transitions. Word has length 32 [2021-12-15 16:53:08,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:08,554 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 172 transitions. [2021-12-15 16:53:08,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:08,555 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 172 transitions. [2021-12-15 16:53:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-15 16:53:08,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:08,556 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:08,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:08,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:08,757 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:08,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:08,757 INFO L85 PathProgramCache]: Analyzing trace with hash 372269661, now seen corresponding path program 1 times [2021-12-15 16:53:08,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:08,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195245095] [2021-12-15 16:53:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:08,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:08,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:08,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195245095] [2021-12-15 16:53:08,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195245095] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:08,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130028743] [2021-12-15 16:53:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:08,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:08,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:53:08,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 16:53:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:09,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 16:53:09,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 16:53:09,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:53:09,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130028743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:09,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 16:53:09,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-15 16:53:09,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095538182] [2021-12-15 16:53:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:09,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:53:09,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:09,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:53:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-15 16:53:09,126 INFO L87 Difference]: Start difference. First operand 138 states and 172 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:09,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:09,264 INFO L93 Difference]: Finished difference Result 316 states and 425 transitions. [2021-12-15 16:53:09,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:53:09,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-12-15 16:53:09,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:09,266 INFO L225 Difference]: With dead ends: 316 [2021-12-15 16:53:09,266 INFO L226 Difference]: Without dead ends: 206 [2021-12-15 16:53:09,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-15 16:53:09,267 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 48 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:09,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 165 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:53:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-15 16:53:09,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 170. [2021-12-15 16:53:09,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.2307692307692308) internal successors, (208), 169 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:09,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 208 transitions. [2021-12-15 16:53:09,274 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 208 transitions. Word has length 39 [2021-12-15 16:53:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:09,274 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 208 transitions. [2021-12-15 16:53:09,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:09,275 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 208 transitions. [2021-12-15 16:53:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-15 16:53:09,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:09,276 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:09,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:09,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-15 16:53:09,491 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:09,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1104758513, now seen corresponding path program 1 times [2021-12-15 16:53:09,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:09,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040704777] [2021-12-15 16:53:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:09,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-15 16:53:09,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:09,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040704777] [2021-12-15 16:53:09,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040704777] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:09,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200108072] [2021-12-15 16:53:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:09,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:09,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:09,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:53:09,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 16:53:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:09,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 16:53:09,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-15 16:53:09,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:53:09,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200108072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:09,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 16:53:09,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-15 16:53:09,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953569464] [2021-12-15 16:53:09,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:09,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:53:09,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:53:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-15 16:53:09,834 INFO L87 Difference]: Start difference. First operand 170 states and 208 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:09,996 INFO L93 Difference]: Finished difference Result 381 states and 496 transitions. [2021-12-15 16:53:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:53:09,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-15 16:53:09,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:09,997 INFO L225 Difference]: With dead ends: 381 [2021-12-15 16:53:09,997 INFO L226 Difference]: Without dead ends: 239 [2021-12-15 16:53:09,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-15 16:53:09,998 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 47 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:09,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 172 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:53:09,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-15 16:53:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 202. [2021-12-15 16:53:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.2139303482587065) internal successors, (244), 201 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 244 transitions. [2021-12-15 16:53:10,013 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 244 transitions. Word has length 46 [2021-12-15 16:53:10,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:10,013 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 244 transitions. [2021-12-15 16:53:10,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 244 transitions. [2021-12-15 16:53:10,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-15 16:53:10,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:10,015 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:10,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:10,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:10,215 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:10,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2090870759, now seen corresponding path program 1 times [2021-12-15 16:53:10,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:10,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431019206] [2021-12-15 16:53:10,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:10,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-15 16:53:10,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:10,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431019206] [2021-12-15 16:53:10,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431019206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:10,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:10,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:53:10,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136399920] [2021-12-15 16:53:10,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:10,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:53:10,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:10,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:53:10,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:10,260 INFO L87 Difference]: Start difference. First operand 202 states and 244 transitions. Second operand has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:10,268 INFO L93 Difference]: Finished difference Result 239 states and 285 transitions. [2021-12-15 16:53:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:53:10,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-15 16:53:10,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:10,271 INFO L225 Difference]: With dead ends: 239 [2021-12-15 16:53:10,271 INFO L226 Difference]: Without dead ends: 178 [2021-12-15 16:53:10,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:10,272 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 8 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:10,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 174 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-12-15 16:53:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 157. [2021-12-15 16:53:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.2307692307692308) internal successors, (192), 156 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 192 transitions. [2021-12-15 16:53:10,281 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 192 transitions. Word has length 53 [2021-12-15 16:53:10,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:10,281 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 192 transitions. [2021-12-15 16:53:10,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 192 transitions. [2021-12-15 16:53:10,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-15 16:53:10,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:10,285 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 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] [2021-12-15 16:53:10,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 16:53:10,285 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:10,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:10,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1462173614, now seen corresponding path program 1 times [2021-12-15 16:53:10,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:10,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652881644] [2021-12-15 16:53:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:10,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-15 16:53:10,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:10,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652881644] [2021-12-15 16:53:10,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652881644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:10,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:10,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:53:10,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499022317] [2021-12-15 16:53:10,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:10,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:53:10,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:53:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:53:10,348 INFO L87 Difference]: Start difference. First operand 157 states and 192 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:10,390 INFO L93 Difference]: Finished difference Result 409 states and 500 transitions. [2021-12-15 16:53:10,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:53:10,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-15 16:53:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:10,393 INFO L225 Difference]: With dead ends: 409 [2021-12-15 16:53:10,393 INFO L226 Difference]: Without dead ends: 280 [2021-12-15 16:53:10,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:53:10,394 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 55 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:10,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 255 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:10,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-12-15 16:53:10,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 198. [2021-12-15 16:53:10,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.263959390862944) internal successors, (249), 197 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 249 transitions. [2021-12-15 16:53:10,402 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 249 transitions. Word has length 62 [2021-12-15 16:53:10,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:10,402 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 249 transitions. [2021-12-15 16:53:10,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 249 transitions. [2021-12-15 16:53:10,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-15 16:53:10,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:10,404 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2021-12-15 16:53:10,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 16:53:10,405 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:10,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:10,405 INFO L85 PathProgramCache]: Analyzing trace with hash 588810384, now seen corresponding path program 2 times [2021-12-15 16:53:10,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:10,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853310677] [2021-12-15 16:53:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:10,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 16:53:10,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:10,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853310677] [2021-12-15 16:53:10,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853310677] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:10,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104985520] [2021-12-15 16:53:10,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 16:53:10,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:10,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:10,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:53:10,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 16:53:10,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 16:53:10,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:53:10,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-15 16:53:10,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-15 16:53:10,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:53:10,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104985520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:10,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 16:53:10,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-12-15 16:53:10,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418422645] [2021-12-15 16:53:10,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:10,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 16:53:10,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:10,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 16:53:10,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-15 16:53:10,645 INFO L87 Difference]: Start difference. First operand 198 states and 249 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:10,844 INFO L93 Difference]: Finished difference Result 861 states and 1118 transitions. [2021-12-15 16:53:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 16:53:10,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-15 16:53:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:10,846 INFO L225 Difference]: With dead ends: 861 [2021-12-15 16:53:10,846 INFO L226 Difference]: Without dead ends: 643 [2021-12-15 16:53:10,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-15 16:53:10,847 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 203 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:10,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 458 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:53:10,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-15 16:53:10,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 372. [2021-12-15 16:53:10,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.2722371967654986) internal successors, (472), 371 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 472 transitions. [2021-12-15 16:53:10,857 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 472 transitions. Word has length 62 [2021-12-15 16:53:10,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:10,857 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 472 transitions. [2021-12-15 16:53:10,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 472 transitions. [2021-12-15 16:53:10,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-15 16:53:10,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:10,858 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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, 1] [2021-12-15 16:53:10,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:11,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:11,063 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash -2012788217, now seen corresponding path program 1 times [2021-12-15 16:53:11,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:11,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036334336] [2021-12-15 16:53:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:11,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 16:53:11,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:11,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036334336] [2021-12-15 16:53:11,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036334336] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:11,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796160533] [2021-12-15 16:53:11,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:11,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:11,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:11,119 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:53:11,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 16:53:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:11,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 16:53:11,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 16:53:11,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:53:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 16:53:11,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796160533] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:53:11,595 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:53:11,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 7 [2021-12-15 16:53:11,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852405590] [2021-12-15 16:53:11,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:53:11,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 16:53:11,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:11,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 16:53:11,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-15 16:53:11,597 INFO L87 Difference]: Start difference. First operand 372 states and 472 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:11,755 INFO L93 Difference]: Finished difference Result 910 states and 1146 transitions. [2021-12-15 16:53:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 16:53:11,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-15 16:53:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:11,758 INFO L225 Difference]: With dead ends: 910 [2021-12-15 16:53:11,758 INFO L226 Difference]: Without dead ends: 573 [2021-12-15 16:53:11,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-15 16:53:11,759 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 244 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:11,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 151 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:53:11,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-12-15 16:53:11,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 378. [2021-12-15 16:53:11,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.2679045092838197) internal successors, (478), 377 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 478 transitions. [2021-12-15 16:53:11,770 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 478 transitions. Word has length 65 [2021-12-15 16:53:11,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:11,771 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 478 transitions. [2021-12-15 16:53:11,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:11,771 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 478 transitions. [2021-12-15 16:53:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-15 16:53:11,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:11,772 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1] [2021-12-15 16:53:11,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-15 16:53:11,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-15 16:53:11,984 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:11,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1236002389, now seen corresponding path program 1 times [2021-12-15 16:53:11,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:11,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077822748] [2021-12-15 16:53:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:11,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-15 16:53:12,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:12,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077822748] [2021-12-15 16:53:12,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077822748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:12,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:12,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 16:53:12,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692915578] [2021-12-15 16:53:12,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:12,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 16:53:12,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 16:53:12,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 16:53:12,059 INFO L87 Difference]: Start difference. First operand 378 states and 478 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:12,262 INFO L93 Difference]: Finished difference Result 1134 states and 1439 transitions. [2021-12-15 16:53:12,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 16:53:12,267 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-15 16:53:12,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:12,269 INFO L225 Difference]: With dead ends: 1134 [2021-12-15 16:53:12,269 INFO L226 Difference]: Without dead ends: 781 [2021-12-15 16:53:12,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-15 16:53:12,270 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 203 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:12,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 175 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:53:12,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-12-15 16:53:12,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 647. [2021-12-15 16:53:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.258513931888545) internal successors, (813), 646 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 813 transitions. [2021-12-15 16:53:12,287 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 813 transitions. Word has length 71 [2021-12-15 16:53:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:12,288 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 813 transitions. [2021-12-15 16:53:12,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 813 transitions. [2021-12-15 16:53:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-15 16:53:12,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:12,289 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:12,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 16:53:12,290 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:12,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:12,290 INFO L85 PathProgramCache]: Analyzing trace with hash 479236665, now seen corresponding path program 1 times [2021-12-15 16:53:12,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:12,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063280039] [2021-12-15 16:53:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:12,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-15 16:53:12,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:12,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063280039] [2021-12-15 16:53:12,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063280039] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:12,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476665505] [2021-12-15 16:53:12,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:12,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:12,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:12,336 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:53:12,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 16:53:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:12,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:53:12,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-15 16:53:12,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:53:12,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476665505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:12,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-15 16:53:12,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-12-15 16:53:12,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380349009] [2021-12-15 16:53:12,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:12,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:53:12,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:12,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:53:12,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:53:12,513 INFO L87 Difference]: Start difference. First operand 647 states and 813 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:12,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:12,582 INFO L93 Difference]: Finished difference Result 1324 states and 1648 transitions. [2021-12-15 16:53:12,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:53:12,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-15 16:53:12,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:12,586 INFO L225 Difference]: With dead ends: 1324 [2021-12-15 16:53:12,586 INFO L226 Difference]: Without dead ends: 960 [2021-12-15 16:53:12,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:53:12,587 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 108 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:12,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 131 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:53:12,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-12-15 16:53:12,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 787. [2021-12-15 16:53:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 1.2582697201017812) internal successors, (989), 786 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:12,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 989 transitions. [2021-12-15 16:53:12,607 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 989 transitions. Word has length 71 [2021-12-15 16:53:12,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:12,607 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 989 transitions. [2021-12-15 16:53:12,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 989 transitions. [2021-12-15 16:53:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-15 16:53:12,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:12,609 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1] [2021-12-15 16:53:12,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:12,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-15 16:53:12,827 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:12,828 INFO L85 PathProgramCache]: Analyzing trace with hash 796532883, now seen corresponding path program 1 times [2021-12-15 16:53:12,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:12,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700900061] [2021-12-15 16:53:12,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:12,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-15 16:53:12,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:12,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700900061] [2021-12-15 16:53:12,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700900061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:12,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:12,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 16:53:12,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013694482] [2021-12-15 16:53:12,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:12,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 16:53:12,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 16:53:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-15 16:53:12,913 INFO L87 Difference]: Start difference. First operand 787 states and 989 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:13,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:13,221 INFO L93 Difference]: Finished difference Result 2041 states and 2554 transitions. [2021-12-15 16:53:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 16:53:13,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-15 16:53:13,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:13,225 INFO L225 Difference]: With dead ends: 2041 [2021-12-15 16:53:13,225 INFO L226 Difference]: Without dead ends: 1223 [2021-12-15 16:53:13,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-12-15 16:53:13,226 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 174 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:13,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 276 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:53:13,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2021-12-15 16:53:13,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1051. [2021-12-15 16:53:13,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.259047619047619) internal successors, (1322), 1050 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1322 transitions. [2021-12-15 16:53:13,251 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1322 transitions. Word has length 77 [2021-12-15 16:53:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:13,251 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1322 transitions. [2021-12-15 16:53:13,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1322 transitions. [2021-12-15 16:53:13,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-15 16:53:13,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:13,253 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:13,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 16:53:13,254 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:13,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash 302771165, now seen corresponding path program 1 times [2021-12-15 16:53:13,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:13,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974401852] [2021-12-15 16:53:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:13,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-15 16:53:13,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:13,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974401852] [2021-12-15 16:53:13,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974401852] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:13,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381247293] [2021-12-15 16:53:13,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:13,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:13,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:13,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:53:13,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 16:53:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:13,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-15 16:53:13,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-15 16:53:13,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:53:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-15 16:53:13,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381247293] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:53:13,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:53:13,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2021-12-15 16:53:13,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711406119] [2021-12-15 16:53:13,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:53:13,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-15 16:53:13,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-15 16:53:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-15 16:53:13,651 INFO L87 Difference]: Start difference. First operand 1051 states and 1322 transitions. Second operand has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:14,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:14,866 INFO L93 Difference]: Finished difference Result 5477 states and 6500 transitions. [2021-12-15 16:53:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-15 16:53:14,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-15 16:53:14,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:14,884 INFO L225 Difference]: With dead ends: 5477 [2021-12-15 16:53:14,884 INFO L226 Difference]: Without dead ends: 5404 [2021-12-15 16:53:14,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=1514, Unknown=0, NotChecked=0, Total=1892 [2021-12-15 16:53:14,887 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 656 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:14,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 774 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-15 16:53:14,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2021-12-15 16:53:14,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 1470. [2021-12-15 16:53:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 1.328795098706603) internal successors, (1952), 1469 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:14,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1952 transitions. [2021-12-15 16:53:14,975 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1952 transitions. Word has length 77 [2021-12-15 16:53:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:14,975 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 1952 transitions. [2021-12-15 16:53:14,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1952 transitions. [2021-12-15 16:53:14,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-15 16:53:14,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:14,978 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:15,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:15,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:15,192 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1618881827, now seen corresponding path program 1 times [2021-12-15 16:53:15,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:15,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033010964] [2021-12-15 16:53:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:15,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-15 16:53:15,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:15,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033010964] [2021-12-15 16:53:15,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033010964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:15,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:15,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 16:53:15,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219641053] [2021-12-15 16:53:15,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:15,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 16:53:15,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 16:53:15,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:53:15,254 INFO L87 Difference]: Start difference. First operand 1470 states and 1952 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:15,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:15,351 INFO L93 Difference]: Finished difference Result 3683 states and 4688 transitions. [2021-12-15 16:53:15,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 16:53:15,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-12-15 16:53:15,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:15,358 INFO L225 Difference]: With dead ends: 3683 [2021-12-15 16:53:15,358 INFO L226 Difference]: Without dead ends: 2250 [2021-12-15 16:53:15,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-15 16:53:15,361 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 204 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:15,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 261 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:53:15,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2021-12-15 16:53:15,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1698. [2021-12-15 16:53:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1697 states have (on average 1.2286387743076017) internal successors, (2085), 1697 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2085 transitions. [2021-12-15 16:53:15,422 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2085 transitions. Word has length 83 [2021-12-15 16:53:15,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:15,423 INFO L470 AbstractCegarLoop]: Abstraction has 1698 states and 2085 transitions. [2021-12-15 16:53:15,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:15,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2085 transitions. [2021-12-15 16:53:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-15 16:53:15,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:15,425 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:15,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 16:53:15,426 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:15,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:15,426 INFO L85 PathProgramCache]: Analyzing trace with hash -45908259, now seen corresponding path program 1 times [2021-12-15 16:53:15,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:15,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300044231] [2021-12-15 16:53:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:15,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-15 16:53:15,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:15,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300044231] [2021-12-15 16:53:15,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300044231] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:15,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:15,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 16:53:15,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173924479] [2021-12-15 16:53:15,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:15,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 16:53:15,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:15,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 16:53:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 16:53:15,536 INFO L87 Difference]: Start difference. First operand 1698 states and 2085 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:15,870 INFO L93 Difference]: Finished difference Result 3581 states and 4374 transitions. [2021-12-15 16:53:15,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 16:53:15,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-12-15 16:53:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:15,880 INFO L225 Difference]: With dead ends: 3581 [2021-12-15 16:53:15,881 INFO L226 Difference]: Without dead ends: 3466 [2021-12-15 16:53:15,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-15 16:53:15,882 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 329 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:15,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 623 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 16:53:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2021-12-15 16:53:15,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 1703. [2021-12-15 16:53:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1702 states have (on average 1.227967097532315) internal successors, (2090), 1702 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2090 transitions. [2021-12-15 16:53:15,933 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2090 transitions. Word has length 83 [2021-12-15 16:53:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:15,934 INFO L470 AbstractCegarLoop]: Abstraction has 1703 states and 2090 transitions. [2021-12-15 16:53:15,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:15,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2090 transitions. [2021-12-15 16:53:15,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-15 16:53:15,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:15,936 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:15,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-15 16:53:15,936 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash -923892381, now seen corresponding path program 1 times [2021-12-15 16:53:15,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:15,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199667641] [2021-12-15 16:53:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:15,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-15 16:53:15,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:15,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199667641] [2021-12-15 16:53:15,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199667641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:15,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:15,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 16:53:15,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956181263] [2021-12-15 16:53:15,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:15,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 16:53:15,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:15,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 16:53:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-15 16:53:15,994 INFO L87 Difference]: Start difference. First operand 1703 states and 2090 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:16,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:16,230 INFO L93 Difference]: Finished difference Result 3118 states and 3817 transitions. [2021-12-15 16:53:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 16:53:16,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-12-15 16:53:16,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:16,236 INFO L225 Difference]: With dead ends: 3118 [2021-12-15 16:53:16,236 INFO L226 Difference]: Without dead ends: 2105 [2021-12-15 16:53:16,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-15 16:53:16,239 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 231 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:16,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 164 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:53:16,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2021-12-15 16:53:16,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 1889. [2021-12-15 16:53:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.2213983050847457) internal successors, (2306), 1888 states have internal predecessors, (2306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2306 transitions. [2021-12-15 16:53:16,284 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2306 transitions. Word has length 83 [2021-12-15 16:53:16,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:16,284 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 2306 transitions. [2021-12-15 16:53:16,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2306 transitions. [2021-12-15 16:53:16,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-15 16:53:16,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:16,287 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:16,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-15 16:53:16,287 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:16,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:16,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1662068397, now seen corresponding path program 1 times [2021-12-15 16:53:16,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:16,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791522593] [2021-12-15 16:53:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:16,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-15 16:53:16,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:16,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791522593] [2021-12-15 16:53:16,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791522593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:16,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:16,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 16:53:16,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620203393] [2021-12-15 16:53:16,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:16,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 16:53:16,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:16,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 16:53:16,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-15 16:53:16,367 INFO L87 Difference]: Start difference. First operand 1889 states and 2306 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:16,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:16,675 INFO L93 Difference]: Finished difference Result 3473 states and 4225 transitions. [2021-12-15 16:53:16,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 16:53:16,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-12-15 16:53:16,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:16,682 INFO L225 Difference]: With dead ends: 3473 [2021-12-15 16:53:16,683 INFO L226 Difference]: Without dead ends: 2269 [2021-12-15 16:53:16,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-12-15 16:53:16,685 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 250 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:16,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 231 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:53:16,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2021-12-15 16:53:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 1665. [2021-12-15 16:53:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 1.2295673076923077) internal successors, (2046), 1664 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:16,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2046 transitions. [2021-12-15 16:53:16,738 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2046 transitions. Word has length 83 [2021-12-15 16:53:16,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:16,738 INFO L470 AbstractCegarLoop]: Abstraction has 1665 states and 2046 transitions. [2021-12-15 16:53:16,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:16,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2046 transitions. [2021-12-15 16:53:16,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-15 16:53:16,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:16,740 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:16,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-15 16:53:16,741 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:16,741 INFO L85 PathProgramCache]: Analyzing trace with hash 335021134, now seen corresponding path program 1 times [2021-12-15 16:53:16,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:16,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438371571] [2021-12-15 16:53:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:16,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-15 16:53:16,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:16,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438371571] [2021-12-15 16:53:16,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438371571] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:16,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461952969] [2021-12-15 16:53:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:16,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:16,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:16,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:53:16,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 16:53:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:16,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-15 16:53:16,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-15 16:53:17,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:53:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-15 16:53:17,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461952969] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:53:17,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:53:17,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 12 [2021-12-15 16:53:17,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699182470] [2021-12-15 16:53:17,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:53:17,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-15 16:53:17,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:17,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-15 16:53:17,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2021-12-15 16:53:17,342 INFO L87 Difference]: Start difference. First operand 1665 states and 2046 transitions. Second operand has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 12 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:17,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:17,481 INFO L93 Difference]: Finished difference Result 2948 states and 3640 transitions. [2021-12-15 16:53:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 16:53:17,481 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 12 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-12-15 16:53:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:17,485 INFO L225 Difference]: With dead ends: 2948 [2021-12-15 16:53:17,485 INFO L226 Difference]: Without dead ends: 1286 [2021-12-15 16:53:17,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2021-12-15 16:53:17,488 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 318 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:17,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 133 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:53:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2021-12-15 16:53:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1158. [2021-12-15 16:53:17,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 1.2359550561797752) internal successors, (1430), 1157 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1430 transitions. [2021-12-15 16:53:17,519 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1430 transitions. Word has length 83 [2021-12-15 16:53:17,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:17,519 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1430 transitions. [2021-12-15 16:53:17,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 12 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:17,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1430 transitions. [2021-12-15 16:53:17,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-15 16:53:17,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:17,521 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:17,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-15 16:53:17,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-15 16:53:17,747 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash 6193209, now seen corresponding path program 1 times [2021-12-15 16:53:17,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:17,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121702843] [2021-12-15 16:53:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:17,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-15 16:53:17,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:17,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121702843] [2021-12-15 16:53:17,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121702843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:17,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:17,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 16:53:17,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428029309] [2021-12-15 16:53:17,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:17,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 16:53:17,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 16:53:17,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-15 16:53:17,841 INFO L87 Difference]: Start difference. First operand 1158 states and 1430 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:18,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:18,275 INFO L93 Difference]: Finished difference Result 2520 states and 3083 transitions. [2021-12-15 16:53:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-15 16:53:18,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-12-15 16:53:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:18,282 INFO L225 Difference]: With dead ends: 2520 [2021-12-15 16:53:18,282 INFO L226 Difference]: Without dead ends: 2405 [2021-12-15 16:53:18,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-15 16:53:18,284 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 437 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:18,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 928 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 16:53:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2021-12-15 16:53:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 1151. [2021-12-15 16:53:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 1150 states have (on average 1.2365217391304348) internal successors, (1422), 1150 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1422 transitions. [2021-12-15 16:53:18,316 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1422 transitions. Word has length 85 [2021-12-15 16:53:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:18,316 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1422 transitions. [2021-12-15 16:53:18,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:53:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1422 transitions. [2021-12-15 16:53:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-15 16:53:18,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:18,318 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:18,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-15 16:53:18,318 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2021-12-15 16:53:18,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:18,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1246814763, now seen corresponding path program 1 times [2021-12-15 16:53:18,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:18,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114887819] [2021-12-15 16:53:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:18,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-15 16:53:18,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:18,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114887819] [2021-12-15 16:53:18,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114887819] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:18,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567812849] [2021-12-15 16:53:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:18,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:18,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:18,424 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:53:18,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-15 16:53:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:18,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-15 16:53:18,618 INFO L286 TraceCheckSpWp]: Computing forward predicates...