./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d28857c86a3c83fc75b1b8cf8125f1c52a370911 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:26:14,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:26:14,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:26:14,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:26:14,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:26:14,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:26:14,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:26:14,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:26:14,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:26:14,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:26:14,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:26:14,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:26:14,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:26:14,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:26:14,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:26:14,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:26:14,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:26:14,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:26:14,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:26:14,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:26:14,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:26:14,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:26:14,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:26:14,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:26:14,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:26:14,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:26:14,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:26:14,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:26:14,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:26:14,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:26:14,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:26:14,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:26:14,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:26:14,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:26:14,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:26:14,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:26:14,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:26:14,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:26:14,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:26:14,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:26:14,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:26:14,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:26:14,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:26:14,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:26:14,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:26:14,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:26:14,280 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:26:14,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:26:14,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:26:14,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:26:14,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:26:14,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:26:14,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:26:14,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:26:14,282 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:26:14,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:26:14,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:26:14,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:26:14,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:26:14,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:26:14,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:26:14,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:26:14,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:26:14,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:26:14,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:26:14,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:26:14,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:26:14,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:26:14,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:26:14,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:26:14,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2020-10-20 06:26:14,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:26:14,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:26:14,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:26:14,508 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:26:14,509 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:26:14,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2020-10-20 06:26:14,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb772d021/c53bb01d40794fb184956d25ad1a58d6/FLAGeca5a9237 [2020-10-20 06:26:15,007 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:26:15,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/java_LogBuiltIn.c [2020-10-20 06:26:15,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb772d021/c53bb01d40794fb184956d25ad1a58d6/FLAGeca5a9237 [2020-10-20 06:26:15,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb772d021/c53bb01d40794fb184956d25ad1a58d6 [2020-10-20 06:26:15,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:26:15,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:26:15,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:26:15,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:26:15,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:26:15,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:26:15" (1/1) ... [2020-10-20 06:26:15,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@755576fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15, skipping insertion in model container [2020-10-20 06:26:15,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:26:15" (1/1) ... [2020-10-20 06:26:15,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:26:15,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:26:15,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:26:15,711 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:26:15,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:26:15,734 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:26:15,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15 WrapperNode [2020-10-20 06:26:15,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:26:15,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:26:15,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:26:15,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:26:15,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15" (1/1) ... [2020-10-20 06:26:15,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15" (1/1) ... [2020-10-20 06:26:15,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:26:15,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:26:15,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:26:15,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:26:15,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15" (1/1) ... [2020-10-20 06:26:15,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15" (1/1) ... [2020-10-20 06:26:15,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15" (1/1) ... [2020-10-20 06:26:15,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15" (1/1) ... [2020-10-20 06:26:15,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15" (1/1) ... [2020-10-20 06:26:15,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15" (1/1) ... [2020-10-20 06:26:15,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15" (1/1) ... [2020-10-20 06:26:15,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:26:15,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:26:15,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:26:15,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:26:15,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:26:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:26:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:26:16,059 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:26:16,059 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 06:26:16,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:26:16 BoogieIcfgContainer [2020-10-20 06:26:16,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:26:16,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:26:16,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:26:16,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:26:16,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:26:15" (1/3) ... [2020-10-20 06:26:16,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dccde46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:26:16, skipping insertion in model container [2020-10-20 06:26:16,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:15" (2/3) ... [2020-10-20 06:26:16,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dccde46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:26:16, skipping insertion in model container [2020-10-20 06:26:16,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:26:16" (3/3) ... [2020-10-20 06:26:16,069 INFO L111 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn.c [2020-10-20 06:26:16,080 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:26:16,087 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:26:16,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:26:16,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:26:16,120 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:26:16,120 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:26:16,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:26:16,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:26:16,121 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:26:16,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:26:16,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:26:16,136 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-20 06:26:16,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-10-20 06:26:16,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:16,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-10-20 06:26:16,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:16,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:16,150 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-10-20 06:26:16,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:16,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214983180] [2020-10-20 06:26:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:16,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214983180] [2020-10-20 06:26:16,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:26:16,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:26:16,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423340793] [2020-10-20 06:26:16,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:26:16,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:16,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:26:16,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:26:16,425 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-10-20 06:26:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:16,481 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-20 06:26:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:26:16,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-10-20 06:26:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:16,493 INFO L225 Difference]: With dead ends: 20 [2020-10-20 06:26:16,493 INFO L226 Difference]: Without dead ends: 8 [2020-10-20 06:26:16,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:26:16,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-20 06:26:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-20 06:26:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:26:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-10-20 06:26:16,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 3 [2020-10-20 06:26:16,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:16,532 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-10-20 06:26:16,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:26:16,532 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-10-20 06:26:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:26:16,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:16,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:26:16,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:26:16,534 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:16,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:16,534 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-10-20 06:26:16,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:16,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651046391] [2020-10-20 06:26:16,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:16,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651046391] [2020-10-20 06:26:16,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:26:16,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:26:16,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043228821] [2020-10-20 06:26:16,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:26:16,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:16,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:26:16,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:26:16,584 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2020-10-20 06:26:16,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:16,635 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-10-20 06:26:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:26:16,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-20 06:26:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:16,637 INFO L225 Difference]: With dead ends: 15 [2020-10-20 06:26:16,637 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 06:26:16,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:26:16,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 06:26:16,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2020-10-20 06:26:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 06:26:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-10-20 06:26:16,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2020-10-20 06:26:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:16,643 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-10-20 06:26:16,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:26:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-10-20 06:26:16,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:26:16,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:16,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:26:16,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:26:16,645 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:16,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:16,646 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-10-20 06:26:16,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:16,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479855860] [2020-10-20 06:26:16,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:16,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479855860] [2020-10-20 06:26:16,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:26:16,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:26:16,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546989338] [2020-10-20 06:26:16,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:26:16,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:16,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:26:16,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:26:16,686 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-10-20 06:26:16,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:16,711 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-10-20 06:26:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:26:16,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-20 06:26:16,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:16,713 INFO L225 Difference]: With dead ends: 12 [2020-10-20 06:26:16,713 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 06:26:16,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:26:16,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 06:26:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 06:26:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 06:26:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-10-20 06:26:16,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2020-10-20 06:26:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:16,719 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-10-20 06:26:16,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:26:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-10-20 06:26:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:26:16,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:16,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-10-20 06:26:16,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:26:16,720 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:16,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2020-10-20 06:26:16,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:16,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962265007] [2020-10-20 06:26:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:16,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962265007] [2020-10-20 06:26:16,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301826405] [2020-10-20 06:26:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:16,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:26:16,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:16,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:16,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-20 06:26:16,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174816463] [2020-10-20 06:26:16,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:26:16,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:16,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:26:16,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:26:16,928 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2020-10-20 06:26:16,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:16,986 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-20 06:26:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:26:16,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-20 06:26:16,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:16,987 INFO L225 Difference]: With dead ends: 18 [2020-10-20 06:26:16,988 INFO L226 Difference]: Without dead ends: 17 [2020-10-20 06:26:16,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:26:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-20 06:26:16,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-10-20 06:26:16,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 06:26:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-20 06:26:16,994 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2020-10-20 06:26:16,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:16,994 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-20 06:26:16,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:26:16,995 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-20 06:26:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:26:16,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:16,996 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2020-10-20 06:26:17,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:17,207 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:17,208 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2020-10-20 06:26:17,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:17,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952466272] [2020-10-20 06:26:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:17,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952466272] [2020-10-20 06:26:17,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185064214] [2020-10-20 06:26:17,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:17,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:26:17,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:17,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:26:17,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:17,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:17,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 06:26:17,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314260458] [2020-10-20 06:26:17,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:26:17,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:17,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:26:17,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:26:17,358 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2020-10-20 06:26:17,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:17,430 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-20 06:26:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:26:17,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-20 06:26:17,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:17,432 INFO L225 Difference]: With dead ends: 23 [2020-10-20 06:26:17,432 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 06:26:17,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:26:17,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 06:26:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-10-20 06:26:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:26:17,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-20 06:26:17,437 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2020-10-20 06:26:17,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:17,438 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-20 06:26:17,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:26:17,438 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-20 06:26:17,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:26:17,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:17,439 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2020-10-20 06:26:17,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:17,651 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:17,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:17,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2020-10-20 06:26:17,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:17,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326615814] [2020-10-20 06:26:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:17,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326615814] [2020-10-20 06:26:17,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463181150] [2020-10-20 06:26:17,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:17,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-20 06:26:17,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:17,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:26:17,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:17,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:17,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-20 06:26:17,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240477316] [2020-10-20 06:26:17,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:26:17,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:17,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:26:17,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:26:17,852 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 10 states. [2020-10-20 06:26:17,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:17,945 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-20 06:26:17,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:26:17,946 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-20 06:26:17,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:17,947 INFO L225 Difference]: With dead ends: 28 [2020-10-20 06:26:17,947 INFO L226 Difference]: Without dead ends: 27 [2020-10-20 06:26:17,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:26:17,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-20 06:26:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-20 06:26:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 06:26:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-10-20 06:26:17,953 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2020-10-20 06:26:17,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:17,954 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-10-20 06:26:17,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:26:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-10-20 06:26:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:26:17,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:17,955 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-10-20 06:26:18,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:18,168 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:18,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:18,169 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2020-10-20 06:26:18,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:18,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799017277] [2020-10-20 06:26:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:18,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799017277] [2020-10-20 06:26:18,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260561705] [2020-10-20 06:26:18,362 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:18,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:26:18,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:18,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:26:18,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:18,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:18,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-20 06:26:18,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730203922] [2020-10-20 06:26:18,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:26:18,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:18,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:26:18,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:26:18,466 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2020-10-20 06:26:18,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:18,591 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-10-20 06:26:18,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:26:18,591 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-20 06:26:18,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:18,593 INFO L225 Difference]: With dead ends: 33 [2020-10-20 06:26:18,593 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 06:26:18,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:26:18,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 06:26:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-20 06:26:18,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 06:26:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-10-20 06:26:18,614 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2020-10-20 06:26:18,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:18,616 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-10-20 06:26:18,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:26:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-10-20 06:26:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:26:18,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:18,617 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2020-10-20 06:26:18,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:18,832 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:18,832 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2020-10-20 06:26:18,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:18,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868544286] [2020-10-20 06:26:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:19,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868544286] [2020-10-20 06:26:19,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692240124] [2020-10-20 06:26:19,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:19,087 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 06:26:19,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:19,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 06:26:19,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:19,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:19,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-20 06:26:19,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107025732] [2020-10-20 06:26:19,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 06:26:19,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:19,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 06:26:19,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:26:19,121 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 14 states. [2020-10-20 06:26:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:19,246 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-10-20 06:26:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:26:19,247 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-10-20 06:26:19,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:19,248 INFO L225 Difference]: With dead ends: 38 [2020-10-20 06:26:19,248 INFO L226 Difference]: Without dead ends: 37 [2020-10-20 06:26:19,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-10-20 06:26:19,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-20 06:26:19,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-20 06:26:19,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 06:26:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-10-20 06:26:19,254 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2020-10-20 06:26:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:19,254 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-10-20 06:26:19,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 06:26:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-10-20 06:26:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-20 06:26:19,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:19,256 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2020-10-20 06:26:19,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:19,467 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:19,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:19,469 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2020-10-20 06:26:19,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:19,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368403700] [2020-10-20 06:26:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:19,640 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:19,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368403700] [2020-10-20 06:26:19,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892762295] [2020-10-20 06:26:19,641 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:19,695 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-20 06:26:19,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:19,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 06:26:19,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:19,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:19,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-20 06:26:19,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416324282] [2020-10-20 06:26:19,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 06:26:19,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:19,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 06:26:19,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:26:19,728 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 16 states. [2020-10-20 06:26:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:19,889 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-10-20 06:26:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 06:26:19,890 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2020-10-20 06:26:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:19,891 INFO L225 Difference]: With dead ends: 43 [2020-10-20 06:26:19,891 INFO L226 Difference]: Without dead ends: 42 [2020-10-20 06:26:19,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-20 06:26:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-20 06:26:19,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-20 06:26:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 06:26:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-10-20 06:26:19,898 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2020-10-20 06:26:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:19,898 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-10-20 06:26:19,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 06:26:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-10-20 06:26:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-20 06:26:19,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:19,900 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2020-10-20 06:26:20,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:20,101 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:20,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:20,102 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2020-10-20 06:26:20,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:20,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059510207] [2020-10-20 06:26:20,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:20,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059510207] [2020-10-20 06:26:20,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286626655] [2020-10-20 06:26:20,340 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:20,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 06:26:20,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:20,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:20,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-20 06:26:20,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347934462] [2020-10-20 06:26:20,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 06:26:20,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:20,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 06:26:20,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-10-20 06:26:20,436 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 18 states. [2020-10-20 06:26:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:20,648 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-10-20 06:26:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-20 06:26:20,648 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-10-20 06:26:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:20,649 INFO L225 Difference]: With dead ends: 48 [2020-10-20 06:26:20,649 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 06:26:20,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2020-10-20 06:26:20,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 06:26:20,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-20 06:26:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-20 06:26:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-10-20 06:26:20,663 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 40 [2020-10-20 06:26:20,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:20,663 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-10-20 06:26:20,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 06:26:20,663 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-10-20 06:26:20,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-20 06:26:20,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:20,665 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2020-10-20 06:26:20,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-20 06:26:20,880 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:20,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:20,881 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2020-10-20 06:26:20,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:20,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98226631] [2020-10-20 06:26:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:21,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98226631] [2020-10-20 06:26:21,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860680946] [2020-10-20 06:26:21,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:21,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:26:21,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:21,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-20 06:26:21,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:21,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:21,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-20 06:26:21,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976877764] [2020-10-20 06:26:21,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-20 06:26:21,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:21,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-20 06:26:21,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-10-20 06:26:21,177 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 20 states. [2020-10-20 06:26:21,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:21,403 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-10-20 06:26:21,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-20 06:26:21,404 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 45 [2020-10-20 06:26:21,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:21,405 INFO L225 Difference]: With dead ends: 53 [2020-10-20 06:26:21,405 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 06:26:21,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2020-10-20 06:26:21,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 06:26:21,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-20 06:26:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-20 06:26:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-10-20 06:26:21,413 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 45 [2020-10-20 06:26:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:21,413 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-10-20 06:26:21,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-20 06:26:21,414 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-10-20 06:26:21,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-20 06:26:21,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:21,415 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2020-10-20 06:26:21,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-20 06:26:21,630 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:21,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:21,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2020-10-20 06:26:21,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:21,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697880544] [2020-10-20 06:26:21,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:21,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697880544] [2020-10-20 06:26:21,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001189208] [2020-10-20 06:26:21,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:21,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-20 06:26:21,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:21,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-20 06:26:21,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:22,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:22,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-20 06:26:22,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636915340] [2020-10-20 06:26:22,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-20 06:26:22,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:22,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-20 06:26:22,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:26:22,014 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 22 states. [2020-10-20 06:26:22,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:22,264 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-10-20 06:26:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-20 06:26:22,265 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 50 [2020-10-20 06:26:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:22,266 INFO L225 Difference]: With dead ends: 58 [2020-10-20 06:26:22,266 INFO L226 Difference]: Without dead ends: 57 [2020-10-20 06:26:22,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2020-10-20 06:26:22,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-20 06:26:22,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-10-20 06:26:22,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-20 06:26:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-10-20 06:26:22,273 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 50 [2020-10-20 06:26:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:22,273 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-10-20 06:26:22,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-20 06:26:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-10-20 06:26:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-20 06:26:22,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:22,276 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2020-10-20 06:26:22,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:22,477 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:22,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:22,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2020-10-20 06:26:22,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:22,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594427006] [2020-10-20 06:26:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:22,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594427006] [2020-10-20 06:26:22,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052074783] [2020-10-20 06:26:22,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:22,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:26:22,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:22,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-20 06:26:22,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:22,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:22,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-20 06:26:22,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407352658] [2020-10-20 06:26:22,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-20 06:26:22,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:22,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-20 06:26:22,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2020-10-20 06:26:22,842 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 24 states. [2020-10-20 06:26:23,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:23,095 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-10-20 06:26:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-20 06:26:23,096 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2020-10-20 06:26:23,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:23,097 INFO L225 Difference]: With dead ends: 63 [2020-10-20 06:26:23,097 INFO L226 Difference]: Without dead ends: 62 [2020-10-20 06:26:23,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2020-10-20 06:26:23,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-20 06:26:23,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-20 06:26:23,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 06:26:23,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2020-10-20 06:26:23,110 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 55 [2020-10-20 06:26:23,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:23,111 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2020-10-20 06:26:23,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-20 06:26:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2020-10-20 06:26:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-20 06:26:23,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:23,112 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2020-10-20 06:26:23,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:23,320 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2020-10-20 06:26:23,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:23,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150868622] [2020-10-20 06:26:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:23,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150868622] [2020-10-20 06:26:23,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584700953] [2020-10-20 06:26:23,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:23,735 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-20 06:26:23,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:23,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-20 06:26:23,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:23,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:23,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-20 06:26:23,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929966735] [2020-10-20 06:26:23,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-20 06:26:23,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:23,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-20 06:26:23,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2020-10-20 06:26:23,767 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 26 states. [2020-10-20 06:26:24,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:24,031 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-10-20 06:26:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-20 06:26:24,032 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 60 [2020-10-20 06:26:24,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:24,033 INFO L225 Difference]: With dead ends: 68 [2020-10-20 06:26:24,033 INFO L226 Difference]: Without dead ends: 67 [2020-10-20 06:26:24,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2020-10-20 06:26:24,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-20 06:26:24,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-10-20 06:26:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 06:26:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2020-10-20 06:26:24,039 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 60 [2020-10-20 06:26:24,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:24,039 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2020-10-20 06:26:24,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-20 06:26:24,040 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2020-10-20 06:26:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-20 06:26:24,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:24,040 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2020-10-20 06:26:24,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-20 06:26:24,250 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:24,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:24,251 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2020-10-20 06:26:24,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:24,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339939877] [2020-10-20 06:26:24,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:24,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339939877] [2020-10-20 06:26:24,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114045833] [2020-10-20 06:26:24,641 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:24,687 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-20 06:26:24,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:24,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-20 06:26:24,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:24,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:24,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-20 06:26:24,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71167148] [2020-10-20 06:26:24,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-20 06:26:24,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:24,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-20 06:26:24,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2020-10-20 06:26:24,724 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 28 states. [2020-10-20 06:26:25,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:25,025 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-10-20 06:26:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-20 06:26:25,026 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 65 [2020-10-20 06:26:25,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:25,027 INFO L225 Difference]: With dead ends: 73 [2020-10-20 06:26:25,027 INFO L226 Difference]: Without dead ends: 72 [2020-10-20 06:26:25,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2020-10-20 06:26:25,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-20 06:26:25,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-20 06:26:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-20 06:26:25,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-10-20 06:26:25,035 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 65 [2020-10-20 06:26:25,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:25,036 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-10-20 06:26:25,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-20 06:26:25,036 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-10-20 06:26:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-20 06:26:25,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:25,038 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2020-10-20 06:26:25,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 06:26:25,253 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:25,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2020-10-20 06:26:25,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:25,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953627935] [2020-10-20 06:26:25,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:25,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953627935] [2020-10-20 06:26:25,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141244574] [2020-10-20 06:26:25,672 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:25,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-20 06:26:25,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:25,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:25,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-10-20 06:26:25,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742016104] [2020-10-20 06:26:25,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-20 06:26:25,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:25,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-20 06:26:25,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2020-10-20 06:26:25,756 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 30 states. [2020-10-20 06:26:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:26,099 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-10-20 06:26:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-20 06:26:26,100 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2020-10-20 06:26:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:26,101 INFO L225 Difference]: With dead ends: 78 [2020-10-20 06:26:26,101 INFO L226 Difference]: Without dead ends: 77 [2020-10-20 06:26:26,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2020-10-20 06:26:26,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-20 06:26:26,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-10-20 06:26:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 06:26:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2020-10-20 06:26:26,114 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 70 [2020-10-20 06:26:26,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:26,116 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2020-10-20 06:26:26,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-20 06:26:26,116 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2020-10-20 06:26:26,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-20 06:26:26,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:26,117 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2020-10-20 06:26:26,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 06:26:26,332 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:26,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:26,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2020-10-20 06:26:26,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:26,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238016896] [2020-10-20 06:26:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:26,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238016896] [2020-10-20 06:26:26,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742355218] [2020-10-20 06:26:26,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:26,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:26:26,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:26,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-20 06:26:26,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:26,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:26,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-10-20 06:26:26,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064677493] [2020-10-20 06:26:26,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-20 06:26:26,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:26,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-20 06:26:26,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2020-10-20 06:26:26,900 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 32 states. [2020-10-20 06:26:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:27,249 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2020-10-20 06:26:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-20 06:26:27,249 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 75 [2020-10-20 06:26:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:27,251 INFO L225 Difference]: With dead ends: 83 [2020-10-20 06:26:27,251 INFO L226 Difference]: Without dead ends: 82 [2020-10-20 06:26:27,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2020-10-20 06:26:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-20 06:26:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-20 06:26:27,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-20 06:26:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2020-10-20 06:26:27,258 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 75 [2020-10-20 06:26:27,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:27,258 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2020-10-20 06:26:27,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-20 06:26:27,259 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2020-10-20 06:26:27,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-20 06:26:27,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:27,260 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2020-10-20 06:26:27,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:27,474 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:27,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:27,474 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2020-10-20 06:26:27,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:27,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137357393] [2020-10-20 06:26:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:27,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137357393] [2020-10-20 06:26:27,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720484623] [2020-10-20 06:26:27,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:28,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-10-20 06:26:28,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:28,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-20 06:26:28,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:28,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:28,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2020-10-20 06:26:28,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177289713] [2020-10-20 06:26:28,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-20 06:26:28,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:28,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-20 06:26:28,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2020-10-20 06:26:28,074 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 34 states. [2020-10-20 06:26:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:28,510 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2020-10-20 06:26:28,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-20 06:26:28,511 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 80 [2020-10-20 06:26:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:28,512 INFO L225 Difference]: With dead ends: 88 [2020-10-20 06:26:28,512 INFO L226 Difference]: Without dead ends: 87 [2020-10-20 06:26:28,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2020-10-20 06:26:28,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-20 06:26:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2020-10-20 06:26:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-20 06:26:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-10-20 06:26:28,530 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 80 [2020-10-20 06:26:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:28,530 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-10-20 06:26:28,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-20 06:26:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-10-20 06:26:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-20 06:26:28,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:28,536 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2020-10-20 06:26:28,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 06:26:28,737 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:28,737 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2020-10-20 06:26:28,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:28,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606344289] [2020-10-20 06:26:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:29,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606344289] [2020-10-20 06:26:29,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591323954] [2020-10-20 06:26:29,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:29,378 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:26:29,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:29,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-20 06:26:29,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:29,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:29,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2020-10-20 06:26:29,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123825486] [2020-10-20 06:26:29,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-20 06:26:29,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:29,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-20 06:26:29,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2020-10-20 06:26:29,415 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 36 states. [2020-10-20 06:26:29,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:29,873 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2020-10-20 06:26:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-20 06:26:29,874 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 85 [2020-10-20 06:26:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:29,875 INFO L225 Difference]: With dead ends: 93 [2020-10-20 06:26:29,875 INFO L226 Difference]: Without dead ends: 92 [2020-10-20 06:26:29,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2020-10-20 06:26:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-20 06:26:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-20 06:26:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-20 06:26:29,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2020-10-20 06:26:29,880 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 85 [2020-10-20 06:26:29,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:29,880 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2020-10-20 06:26:29,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-20 06:26:29,880 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2020-10-20 06:26:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-20 06:26:29,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:29,881 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2020-10-20 06:26:30,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:30,093 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:30,094 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2020-10-20 06:26:30,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:30,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423275163] [2020-10-20 06:26:30,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:30,774 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:30,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423275163] [2020-10-20 06:26:30,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231515517] [2020-10-20 06:26:30,775 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:30,956 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-10-20 06:26:30,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:30,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 37 conjunts are in the unsatisfiable core [2020-10-20 06:26:30,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:31,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:31,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2020-10-20 06:26:31,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358908555] [2020-10-20 06:26:31,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-20 06:26:31,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:31,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-20 06:26:31,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2020-10-20 06:26:31,010 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 38 states. [2020-10-20 06:26:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:31,491 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2020-10-20 06:26:31,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-20 06:26:31,491 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 90 [2020-10-20 06:26:31,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:31,492 INFO L225 Difference]: With dead ends: 98 [2020-10-20 06:26:31,492 INFO L226 Difference]: Without dead ends: 97 [2020-10-20 06:26:31,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2020-10-20 06:26:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-20 06:26:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2020-10-20 06:26:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-20 06:26:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2020-10-20 06:26:31,497 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 90 [2020-10-20 06:26:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:31,497 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2020-10-20 06:26:31,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-20 06:26:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2020-10-20 06:26:31,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-20 06:26:31,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:31,498 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2020-10-20 06:26:31,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:31,708 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:31,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2020-10-20 06:26:31,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:31,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599744453] [2020-10-20 06:26:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:32,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599744453] [2020-10-20 06:26:32,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632010279] [2020-10-20 06:26:32,413 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:32,504 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-10-20 06:26:32,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:32,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 39 conjunts are in the unsatisfiable core [2020-10-20 06:26:32,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:32,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:32,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2020-10-20 06:26:32,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672359948] [2020-10-20 06:26:32,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-20 06:26:32,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:32,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-20 06:26:32,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2020-10-20 06:26:32,546 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 40 states. [2020-10-20 06:26:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:33,063 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2020-10-20 06:26:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-20 06:26:33,064 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 95 [2020-10-20 06:26:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:33,065 INFO L225 Difference]: With dead ends: 103 [2020-10-20 06:26:33,065 INFO L226 Difference]: Without dead ends: 102 [2020-10-20 06:26:33,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2020-10-20 06:26:33,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-20 06:26:33,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-20 06:26:33,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-20 06:26:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2020-10-20 06:26:33,071 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 95 [2020-10-20 06:26:33,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:33,071 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2020-10-20 06:26:33,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-20 06:26:33,072 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2020-10-20 06:26:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-20 06:26:33,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:33,073 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2020-10-20 06:26:33,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-20 06:26:33,285 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:33,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:33,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2020-10-20 06:26:33,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:33,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523546897] [2020-10-20 06:26:33,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:34,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523546897] [2020-10-20 06:26:34,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058677616] [2020-10-20 06:26:34,039 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:34,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 41 conjunts are in the unsatisfiable core [2020-10-20 06:26:34,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:34,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:34,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2020-10-20 06:26:34,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028423679] [2020-10-20 06:26:34,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-20 06:26:34,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:34,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-20 06:26:34,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2020-10-20 06:26:34,160 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 42 states. [2020-10-20 06:26:34,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:34,739 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2020-10-20 06:26:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-20 06:26:34,741 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 100 [2020-10-20 06:26:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:34,742 INFO L225 Difference]: With dead ends: 108 [2020-10-20 06:26:34,742 INFO L226 Difference]: Without dead ends: 107 [2020-10-20 06:26:34,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2020-10-20 06:26:34,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-20 06:26:34,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2020-10-20 06:26:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-20 06:26:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2020-10-20 06:26:34,747 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 100 [2020-10-20 06:26:34,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:34,748 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2020-10-20 06:26:34,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-20 06:26:34,748 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2020-10-20 06:26:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-20 06:26:34,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:34,761 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1] [2020-10-20 06:26:34,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:34,973 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:34,973 INFO L82 PathProgramCache]: Analyzing trace with hash -119266781, now seen corresponding path program 20 times [2020-10-20 06:26:34,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:34,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638298670] [2020-10-20 06:26:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:35,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638298670] [2020-10-20 06:26:35,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666667319] [2020-10-20 06:26:35,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:35,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:26:35,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:35,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-20 06:26:35,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:35,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:35,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2020-10-20 06:26:35,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084576679] [2020-10-20 06:26:35,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-20 06:26:35,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:35,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-20 06:26:35,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2020-10-20 06:26:35,973 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 44 states. [2020-10-20 06:26:36,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:36,586 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2020-10-20 06:26:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-20 06:26:36,586 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 105 [2020-10-20 06:26:36,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:36,588 INFO L225 Difference]: With dead ends: 113 [2020-10-20 06:26:36,588 INFO L226 Difference]: Without dead ends: 112 [2020-10-20 06:26:36,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2020-10-20 06:26:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-20 06:26:36,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-20 06:26:36,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-20 06:26:36,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2020-10-20 06:26:36,594 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 105 [2020-10-20 06:26:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:36,594 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2020-10-20 06:26:36,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-20 06:26:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2020-10-20 06:26:36,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-20 06:26:36,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:36,595 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1] [2020-10-20 06:26:36,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-20 06:26:36,808 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:36,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:36,809 INFO L82 PathProgramCache]: Analyzing trace with hash 953284081, now seen corresponding path program 21 times [2020-10-20 06:26:36,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:36,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192083917] [2020-10-20 06:26:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:37,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192083917] [2020-10-20 06:26:37,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248918577] [2020-10-20 06:26:37,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:37,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2020-10-20 06:26:37,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:37,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 45 conjunts are in the unsatisfiable core [2020-10-20 06:26:37,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:37,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:37,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2020-10-20 06:26:37,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421035492] [2020-10-20 06:26:37,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-20 06:26:37,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:37,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-20 06:26:37,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2020-10-20 06:26:37,947 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 46 states. [2020-10-20 06:26:38,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:38,608 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2020-10-20 06:26:38,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-20 06:26:38,609 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 110 [2020-10-20 06:26:38,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:38,610 INFO L225 Difference]: With dead ends: 118 [2020-10-20 06:26:38,610 INFO L226 Difference]: Without dead ends: 117 [2020-10-20 06:26:38,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2020-10-20 06:26:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-20 06:26:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-10-20 06:26:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-20 06:26:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2020-10-20 06:26:38,616 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 110 [2020-10-20 06:26:38,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:38,616 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2020-10-20 06:26:38,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-20 06:26:38,617 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2020-10-20 06:26:38,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-20 06:26:38,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:38,617 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1] [2020-10-20 06:26:38,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-20 06:26:38,827 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:38,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:38,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1393971939, now seen corresponding path program 22 times [2020-10-20 06:26:38,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:38,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003730162] [2020-10-20 06:26:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:39,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003730162] [2020-10-20 06:26:39,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858868939] [2020-10-20 06:26:39,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:39,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:26:39,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:39,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 47 conjunts are in the unsatisfiable core [2020-10-20 06:26:39,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:39,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:39,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2020-10-20 06:26:39,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69037294] [2020-10-20 06:26:39,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-20 06:26:39,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:39,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-20 06:26:39,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2020-10-20 06:26:39,888 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 48 states. [2020-10-20 06:26:40,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:40,611 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2020-10-20 06:26:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-20 06:26:40,612 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 115 [2020-10-20 06:26:40,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:40,613 INFO L225 Difference]: With dead ends: 123 [2020-10-20 06:26:40,613 INFO L226 Difference]: Without dead ends: 122 [2020-10-20 06:26:40,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2020-10-20 06:26:40,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-20 06:26:40,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2020-10-20 06:26:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-20 06:26:40,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2020-10-20 06:26:40,621 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 115 [2020-10-20 06:26:40,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:40,621 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2020-10-20 06:26:40,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-20 06:26:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2020-10-20 06:26:40,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-20 06:26:40,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:40,623 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1] [2020-10-20 06:26:40,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:40,829 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:40,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:40,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1642054351, now seen corresponding path program 23 times [2020-10-20 06:26:40,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:40,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908578356] [2020-10-20 06:26:40,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:42,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908578356] [2020-10-20 06:26:42,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829480107] [2020-10-20 06:26:42,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:42,752 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-10-20 06:26:42,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:42,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 49 conjunts are in the unsatisfiable core [2020-10-20 06:26:42,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:42,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:42,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2020-10-20 06:26:42,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660322286] [2020-10-20 06:26:42,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-20 06:26:42,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:42,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-20 06:26:42,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2020-10-20 06:26:42,834 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 50 states. [2020-10-20 06:26:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:43,560 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2020-10-20 06:26:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-20 06:26:43,561 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 120 [2020-10-20 06:26:43,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:43,562 INFO L225 Difference]: With dead ends: 128 [2020-10-20 06:26:43,562 INFO L226 Difference]: Without dead ends: 127 [2020-10-20 06:26:43,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2020-10-20 06:26:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-20 06:26:43,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2020-10-20 06:26:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-20 06:26:43,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2020-10-20 06:26:43,568 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 120 [2020-10-20 06:26:43,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:43,568 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2020-10-20 06:26:43,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-20 06:26:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2020-10-20 06:26:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-20 06:26:43,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:43,569 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1] [2020-10-20 06:26:43,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-20 06:26:43,779 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:43,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:43,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1546480733, now seen corresponding path program 24 times [2020-10-20 06:26:43,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:43,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484108181] [2020-10-20 06:26:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:44,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484108181] [2020-10-20 06:26:44,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498159749] [2020-10-20 06:26:44,951 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:45,067 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2020-10-20 06:26:45,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:45,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 51 conjunts are in the unsatisfiable core [2020-10-20 06:26:45,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:45,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:45,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2020-10-20 06:26:45,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221982605] [2020-10-20 06:26:45,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-20 06:26:45,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:45,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-20 06:26:45,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2020-10-20 06:26:45,116 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 52 states. [2020-10-20 06:26:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:45,975 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2020-10-20 06:26:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-20 06:26:45,976 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 125 [2020-10-20 06:26:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:45,977 INFO L225 Difference]: With dead ends: 133 [2020-10-20 06:26:45,977 INFO L226 Difference]: Without dead ends: 132 [2020-10-20 06:26:45,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2020-10-20 06:26:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-20 06:26:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-20 06:26:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-20 06:26:45,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-10-20 06:26:45,982 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 125 [2020-10-20 06:26:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:45,983 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-10-20 06:26:45,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-20 06:26:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-10-20 06:26:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-20 06:26:45,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:45,984 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1] [2020-10-20 06:26:46,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:46,186 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:46,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:46,188 INFO L82 PathProgramCache]: Analyzing trace with hash -525437839, now seen corresponding path program 25 times [2020-10-20 06:26:46,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:46,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457472054] [2020-10-20 06:26:46,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:47,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457472054] [2020-10-20 06:26:47,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596963139] [2020-10-20 06:26:47,488 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:47,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 53 conjunts are in the unsatisfiable core [2020-10-20 06:26:47,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:47,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:47,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2020-10-20 06:26:47,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490118010] [2020-10-20 06:26:47,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-20 06:26:47,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:47,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-20 06:26:47,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2020-10-20 06:26:47,596 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 54 states. [2020-10-20 06:26:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:48,475 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2020-10-20 06:26:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-20 06:26:48,476 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 130 [2020-10-20 06:26:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:48,478 INFO L225 Difference]: With dead ends: 138 [2020-10-20 06:26:48,478 INFO L226 Difference]: Without dead ends: 137 [2020-10-20 06:26:48,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2020-10-20 06:26:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-20 06:26:48,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2020-10-20 06:26:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-20 06:26:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2020-10-20 06:26:48,483 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 130 [2020-10-20 06:26:48,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:48,484 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2020-10-20 06:26:48,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-20 06:26:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2020-10-20 06:26:48,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-20 06:26:48,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:48,485 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1] [2020-10-20 06:26:48,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-20 06:26:48,694 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:48,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:48,694 INFO L82 PathProgramCache]: Analyzing trace with hash 298116195, now seen corresponding path program 26 times [2020-10-20 06:26:48,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:48,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870511967] [2020-10-20 06:26:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:50,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870511967] [2020-10-20 06:26:50,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673064932] [2020-10-20 06:26:50,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:50,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:26:50,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:50,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 55 conjunts are in the unsatisfiable core [2020-10-20 06:26:50,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:50,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:50,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2020-10-20 06:26:50,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402047007] [2020-10-20 06:26:50,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-20 06:26:50,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:50,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-20 06:26:50,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2020-10-20 06:26:50,180 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 56 states. [2020-10-20 06:26:51,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:51,135 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2020-10-20 06:26:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-20 06:26:51,135 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 135 [2020-10-20 06:26:51,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:51,137 INFO L225 Difference]: With dead ends: 143 [2020-10-20 06:26:51,137 INFO L226 Difference]: Without dead ends: 142 [2020-10-20 06:26:51,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2020-10-20 06:26:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-20 06:26:51,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2020-10-20 06:26:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-20 06:26:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2020-10-20 06:26:51,142 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 135 [2020-10-20 06:26:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:51,142 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2020-10-20 06:26:51,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-20 06:26:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2020-10-20 06:26:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-20 06:26:51,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:51,143 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1] [2020-10-20 06:26:51,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-20 06:26:51,344 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:51,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:51,345 INFO L82 PathProgramCache]: Analyzing trace with hash 626039729, now seen corresponding path program 27 times [2020-10-20 06:26:51,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:51,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112181498] [2020-10-20 06:26:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:52,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112181498] [2020-10-20 06:26:52,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214236252] [2020-10-20 06:26:52,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:52,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2020-10-20 06:26:52,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:52,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 57 conjunts are in the unsatisfiable core [2020-10-20 06:26:52,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:52,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:52,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2020-10-20 06:26:52,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185200336] [2020-10-20 06:26:52,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-20 06:26:52,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:52,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-20 06:26:52,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2020-10-20 06:26:52,981 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 58 states. [2020-10-20 06:26:54,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:54,037 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2020-10-20 06:26:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-20 06:26:54,038 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 140 [2020-10-20 06:26:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:54,039 INFO L225 Difference]: With dead ends: 148 [2020-10-20 06:26:54,039 INFO L226 Difference]: Without dead ends: 147 [2020-10-20 06:26:54,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2020-10-20 06:26:54,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-20 06:26:54,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2020-10-20 06:26:54,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-20 06:26:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2020-10-20 06:26:54,045 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 140 [2020-10-20 06:26:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:54,046 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2020-10-20 06:26:54,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-20 06:26:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2020-10-20 06:26:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-20 06:26:54,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:54,047 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1] [2020-10-20 06:26:54,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:54,260 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:54,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1553548579, now seen corresponding path program 28 times [2020-10-20 06:26:54,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:54,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067206028] [2020-10-20 06:26:54,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:55,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:55,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067206028] [2020-10-20 06:26:55,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400512756] [2020-10-20 06:26:55,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:55,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:26:55,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:55,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 59 conjunts are in the unsatisfiable core [2020-10-20 06:26:55,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:55,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:55,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2020-10-20 06:26:55,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362241848] [2020-10-20 06:26:55,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-20 06:26:55,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:55,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-20 06:26:55,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2020-10-20 06:26:55,922 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 60 states. [2020-10-20 06:26:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:57,032 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2020-10-20 06:26:57,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-20 06:26:57,033 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 145 [2020-10-20 06:26:57,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:57,035 INFO L225 Difference]: With dead ends: 153 [2020-10-20 06:26:57,035 INFO L226 Difference]: Without dead ends: 152 [2020-10-20 06:26:57,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2020-10-20 06:26:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-20 06:26:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2020-10-20 06:26:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-20 06:26:57,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2020-10-20 06:26:57,041 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 145 [2020-10-20 06:26:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:57,041 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2020-10-20 06:26:57,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-20 06:26:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2020-10-20 06:26:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-20 06:26:57,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:57,042 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1] [2020-10-20 06:26:57,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:57,255 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:57,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:57,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1747275023, now seen corresponding path program 29 times [2020-10-20 06:26:57,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:57,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829799236] [2020-10-20 06:26:57,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:58,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829799236] [2020-10-20 06:26:58,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31475783] [2020-10-20 06:26:58,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:59,463 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2020-10-20 06:26:59,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:26:59,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 61 conjunts are in the unsatisfiable core [2020-10-20 06:26:59,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:59,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:59,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2020-10-20 06:26:59,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046542489] [2020-10-20 06:26:59,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-20 06:26:59,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:59,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-20 06:26:59,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2020-10-20 06:26:59,527 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 62 states. [2020-10-20 06:27:00,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:27:00,662 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2020-10-20 06:27:00,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-20 06:27:00,662 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 150 [2020-10-20 06:27:00,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:27:00,664 INFO L225 Difference]: With dead ends: 158 [2020-10-20 06:27:00,664 INFO L226 Difference]: Without dead ends: 157 [2020-10-20 06:27:00,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2020-10-20 06:27:00,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-20 06:27:00,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-10-20 06:27:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-20 06:27:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2020-10-20 06:27:00,670 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 150 [2020-10-20 06:27:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:27:00,670 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2020-10-20 06:27:00,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-20 06:27:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2020-10-20 06:27:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-20 06:27:00,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:27:00,671 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1] [2020-10-20 06:27:00,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-10-20 06:27:00,875 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:27:00,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:27:00,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1661225501, now seen corresponding path program 30 times [2020-10-20 06:27:00,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:27:00,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990987055] [2020-10-20 06:27:00,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:27:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:02,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:27:02,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990987055] [2020-10-20 06:27:02,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625681041] [2020-10-20 06:27:02,612 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:27:02,793 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2020-10-20 06:27:02,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:27:02,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 63 conjunts are in the unsatisfiable core [2020-10-20 06:27:02,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:27:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:27:02,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:27:02,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2020-10-20 06:27:02,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160584816] [2020-10-20 06:27:02,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-20 06:27:02,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:27:02,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-20 06:27:02,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2020-10-20 06:27:02,855 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 64 states. [2020-10-20 06:27:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:27:04,103 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2020-10-20 06:27:04,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-20 06:27:04,104 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 155 [2020-10-20 06:27:04,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:27:04,106 INFO L225 Difference]: With dead ends: 163 [2020-10-20 06:27:04,106 INFO L226 Difference]: Without dead ends: 162 [2020-10-20 06:27:04,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2574, Invalid=6356, Unknown=0, NotChecked=0, Total=8930 [2020-10-20 06:27:04,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-20 06:27:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-20 06:27:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-20 06:27:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2020-10-20 06:27:04,114 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 155 [2020-10-20 06:27:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:27:04,114 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2020-10-20 06:27:04,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-20 06:27:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2020-10-20 06:27:04,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-20 06:27:04,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:27:04,116 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 1, 1] [2020-10-20 06:27:04,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:27:04,319 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:27:04,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:27:04,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1423918543, now seen corresponding path program 31 times [2020-10-20 06:27:04,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:27:04,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345190054] [2020-10-20 06:27:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:27:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:27:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 2446 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:27:08,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345190054] [2020-10-20 06:27:08,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:27:08,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2020-10-20 06:27:08,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674925461] [2020-10-20 06:27:08,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-20 06:27:08,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:27:08,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-20 06:27:08,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-20 06:27:08,271 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 63 states. [2020-10-20 06:27:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:27:08,565 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2020-10-20 06:27:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-20 06:27:08,566 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 160 [2020-10-20 06:27:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:27:08,567 INFO L225 Difference]: With dead ends: 161 [2020-10-20 06:27:08,567 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:27:08,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 30 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-20 06:27:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:27:08,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:27:08,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:27:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:27:08,570 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-10-20 06:27:08,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:27:08,570 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:27:08,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-20 06:27:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:27:08,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:27:08,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-20 06:27:08,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:27:09,205 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 155 [2020-10-20 06:27:09,213 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2020-10-20 06:27:09,213 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:27:09,213 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-10-20 06:27:09,213 INFO L270 CegarLoopResult]: At program point L19(lines 18 20) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2020-10-20 06:27:09,214 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-20 06:27:09,214 INFO L274 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-10-20 06:27:09,215 INFO L270 CegarLoopResult]: At program point L7-2(lines 7 12) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_mlog_~res~0))) (or (and (<= ULTIMATE.start_mlog_~x 1048575) .cse0 (<= ULTIMATE.start_mlog_~res~0 11)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 9) (<= ULTIMATE.start_mlog_~x 4194303)) (and (<= ULTIMATE.start_mlog_~x 536870911) .cse0 (<= ULTIMATE.start_mlog_~res~0 2)) (and .cse0 (<= ULTIMATE.start_mlog_~x 8388607) (<= ULTIMATE.start_mlog_~res~0 8)) (and (<= ULTIMATE.start_mlog_~res~0 14) (<= ULTIMATE.start_mlog_~x 131071) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~x 67108863) (<= ULTIMATE.start_mlog_~res~0 5)) (and (<= ULTIMATE.start_mlog_~res~0 1) .cse0 (<= ULTIMATE.start_mlog_~x 1073741823)) (and .cse0 (<= ULTIMATE.start_mlog_~x 268435455) (<= ULTIMATE.start_mlog_~res~0 3)) (and (<= ULTIMATE.start_mlog_~x 2097151) (<= ULTIMATE.start_mlog_~res~0 10) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 17) (<= ULTIMATE.start_mlog_~x 16383)) (and (<= ULTIMATE.start_mlog_~res~0 22) .cse0 (<= ULTIMATE.start_mlog_~x 511)) (and .cse0 (<= ULTIMATE.start_mlog_~x 31) (<= ULTIMATE.start_mlog_~res~0 26)) (and .cse0 (<= ULTIMATE.start_mlog_~x 127) (<= ULTIMATE.start_mlog_~res~0 24)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 6) (<= ULTIMATE.start_mlog_~x 33554431)) (and (<= ULTIMATE.start_mlog_~x 262143) .cse0 (<= ULTIMATE.start_mlog_~res~0 13)) (and (<= ULTIMATE.start_mlog_~res~0 21) .cse0 (<= ULTIMATE.start_mlog_~x 1023)) (and (<= ULTIMATE.start_mlog_~res~0 19) .cse0 (<= ULTIMATE.start_mlog_~x 4095)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 27) (<= ULTIMATE.start_mlog_~x 15)) (and (<= ULTIMATE.start_mlog_~res~0 28) .cse0 (<= ULTIMATE.start_mlog_~x 7)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 29) (<= ULTIMATE.start_mlog_~x 3)) (and .cse0 (<= ULTIMATE.start_mlog_~x 1) (<= ULTIMATE.start_mlog_~res~0 30)) (and .cse0 (<= ULTIMATE.start_mlog_~x 2147483647) (<= ULTIMATE.start_mlog_~res~0 0)) (and (<= ULTIMATE.start_mlog_~res~0 7) .cse0 (<= ULTIMATE.start_mlog_~x 16777215)) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 12) (<= ULTIMATE.start_mlog_~x 524287)) (and (<= ULTIMATE.start_mlog_~res~0 23) .cse0 (<= ULTIMATE.start_mlog_~x 255)) (and (<= ULTIMATE.start_mlog_~res~0 15) .cse0 (<= ULTIMATE.start_mlog_~x 65535)) (and (<= ULTIMATE.start_mlog_~res~0 16) .cse0 (<= ULTIMATE.start_mlog_~x 32767)) (and (<= ULTIMATE.start_mlog_~x 8191) .cse0 (<= ULTIMATE.start_mlog_~res~0 18)) (and (<= ULTIMATE.start_mlog_~res~0 25) (<= ULTIMATE.start_mlog_~x 63) .cse0) (and .cse0 (<= ULTIMATE.start_mlog_~res~0 4) (<= ULTIMATE.start_mlog_~x 134217727)) (and (<= ULTIMATE.start_mlog_~res~0 20) .cse0 (<= ULTIMATE.start_mlog_~x 2047)))) [2020-10-20 06:27:09,215 INFO L274 CegarLoopResult]: For program point L7-3(lines 7 12) no Hoare annotation was computed. [2020-10-20 06:27:09,215 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2020-10-20 06:27:09,216 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2020-10-20 06:27:09,216 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:27:09,216 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:27:09,216 INFO L270 CegarLoopResult]: At program point L14(lines 3 16) the Hoare annotation is: (<= ULTIMATE.start_mlog_~x 2147483647) [2020-10-20 06:27:09,216 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-20 06:27:09,216 INFO L274 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-10-20 06:27:09,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:27:09 BoogieIcfgContainer [2020-10-20 06:27:09,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:27:09,242 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:27:09,242 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:27:09,243 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:27:09,243 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:26:16" (3/4) ... [2020-10-20 06:27:09,247 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:27:09,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 06:27:09,259 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:27:09,304 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:27:09,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:27:09,306 INFO L168 Benchmark]: Toolchain (without parser) took 53888.64 ms. Allocated memory was 35.1 MB in the beginning and 206.6 MB in the end (delta: 171.4 MB). Free memory was 12.5 MB in the beginning and 172.2 MB in the end (delta: -159.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:27:09,306 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 33.0 MB. Free memory was 18.2 MB in the beginning and 18.2 MB in the end (delta: 28.6 kB). Peak memory consumption was 28.6 kB. Max. memory is 14.3 GB. [2020-10-20 06:27:09,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.44 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 11.7 MB in the beginning and 25.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:27:09,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.53 ms. Allocated memory is still 43.5 MB. Free memory was 25.1 MB in the beginning and 23.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:27:09,308 INFO L168 Benchmark]: Boogie Preprocessor took 19.93 ms. Allocated memory is still 43.5 MB. Free memory was 23.6 MB in the beginning and 22.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:27:09,309 INFO L168 Benchmark]: RCFGBuilder took 275.14 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 22.3 MB in the beginning and 23.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:27:09,309 INFO L168 Benchmark]: TraceAbstraction took 53179.74 ms. Allocated memory was 45.6 MB in the beginning and 206.6 MB in the end (delta: 161.0 MB). Free memory was 23.4 MB in the beginning and 175.7 MB in the end (delta: -152.2 MB). Peak memory consumption was 178.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:27:09,310 INFO L168 Benchmark]: Witness Printer took 61.97 ms. Allocated memory is still 206.6 MB. Free memory was 175.7 MB in the beginning and 172.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:27:09,313 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 33.0 MB. Free memory was 18.2 MB in the beginning and 18.2 MB in the end (delta: 28.6 kB). Peak memory consumption was 28.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 313.44 ms. Allocated memory was 35.1 MB in the beginning and 43.5 MB in the end (delta: 8.4 MB). Free memory was 11.7 MB in the beginning and 25.2 MB in the end (delta: -13.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 29.53 ms. Allocated memory is still 43.5 MB. Free memory was 25.1 MB in the beginning and 23.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 19.93 ms. Allocated memory is still 43.5 MB. Free memory was 23.6 MB in the beginning and 22.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 275.14 ms. Allocated memory was 43.5 MB in the beginning and 45.6 MB in the end (delta: 2.1 MB). Free memory was 22.3 MB in the beginning and 23.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 53179.74 ms. Allocated memory was 45.6 MB in the beginning and 206.6 MB in the end (delta: 161.0 MB). Free memory was 23.4 MB in the beginning and 175.7 MB in the end (delta: -152.2 MB). Peak memory consumption was 178.9 MB. Max. memory is 14.3 GB. * Witness Printer took 61.97 ms. Allocated memory is still 206.6 MB. Free memory was 175.7 MB in the beginning and 172.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((x <= 1048575 && 0 <= res) && res <= 11) || ((0 <= res && res <= 9) && x <= 4194303)) || ((x <= 536870911 && 0 <= res) && res <= 2)) || ((0 <= res && x <= 8388607) && res <= 8)) || ((res <= 14 && x <= 131071) && 0 <= res)) || ((0 <= res && x <= 67108863) && res <= 5)) || ((res <= 1 && 0 <= res) && x <= 1073741823)) || ((0 <= res && x <= 268435455) && res <= 3)) || ((x <= 2097151 && res <= 10) && 0 <= res)) || ((0 <= res && res <= 17) && x <= 16383)) || ((res <= 22 && 0 <= res) && x <= 511)) || ((0 <= res && x <= 31) && res <= 26)) || ((0 <= res && x <= 127) && res <= 24)) || ((0 <= res && res <= 6) && x <= 33554431)) || ((x <= 262143 && 0 <= res) && res <= 13)) || ((res <= 21 && 0 <= res) && x <= 1023)) || ((res <= 19 && 0 <= res) && x <= 4095)) || ((0 <= res && res <= 27) && x <= 15)) || ((res <= 28 && 0 <= res) && x <= 7)) || ((0 <= res && res <= 29) && x <= 3)) || ((0 <= res && x <= 1) && res <= 30)) || ((0 <= res && x <= 2147483647) && res <= 0)) || ((res <= 7 && 0 <= res) && x <= 16777215)) || ((0 <= res && res <= 12) && x <= 524287)) || ((res <= 23 && 0 <= res) && x <= 255)) || ((res <= 15 && 0 <= res) && x <= 65535)) || ((res <= 16 && 0 <= res) && x <= 32767)) || ((x <= 8191 && 0 <= res) && res <= 18)) || ((res <= 25 && x <= 63) && 0 <= res)) || ((0 <= res && res <= 4) && x <= 134217727)) || ((res <= 20 && 0 <= res) && x <= 2047) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 52.4s, OverallIterations: 34, TraceHistogramMax: 32, AutomataDifference: 15.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 197 SDtfs, 1784 SDslu, 2332 SDs, 0 SdLazy, 3955 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4030 GetRequests, 2446 SyntacticMatches, 30 SemanticMatches, 1554 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14850 ImplicationChecksByTransitivity, 33.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 34 MinimizatonAttempts, 32 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 36 NumberOfFragments, 317 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 24.8s InterpolantComputationTime, 5124 NumberOfCodeBlocks, 5124 NumberOfCodeBlocksAsserted, 324 NumberOfCheckSat, 5060 ConstructedInterpolants, 0 QuantifiedInterpolants, 1644332 SizeOfPredicates, 495 NumberOfNonLiveVariables, 5655 ConjunctsInSsa, 1020 ConjunctsInUnsatCore, 64 InterpolantComputations, 4 PerfectInterpolantSequences, 2449/51119 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...