./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.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 457415f9b28998cf0ba7f80d69eaf14873f5a98f .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:32:30,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:32:30,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:32:30,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:32:30,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:32:30,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:32:30,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:32:30,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:32:30,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:32:30,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:32:30,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:32:30,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:32:30,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:32:30,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:32:30,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:32:30,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:32:30,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:32:30,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:32:30,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:32:30,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:32:30,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:32:30,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:32:30,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:32:30,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:32:30,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:32:30,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:32:30,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:32:30,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:32:30,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:32:30,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:32:30,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:32:30,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:32:30,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:32:30,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:32:30,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:32:30,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:32:30,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:32:30,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:32:30,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:32:30,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:32:30,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:32:30,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:32:30,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:32:30,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:32:30,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:32:30,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:32:30,910 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:32:30,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:32:30,911 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:32:30,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:32:30,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:32:30,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:32:30,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:32:30,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:32:30,916 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:32:30,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:32:30,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:32:30,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:32:30,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:32:30,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:32:30,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:32:30,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:32:30,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:32:30,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:32:30,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:32:30,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:32:30,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:32:30,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:32:30,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:32:30,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:32:30,921 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 -> 457415f9b28998cf0ba7f80d69eaf14873f5a98f [2020-10-19 18:32:31,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:32:31,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:32:31,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:32:31,281 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:32:31,281 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:32:31,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2020-10-19 18:32:31,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88345e92d/3f1c86e9fbc4462eb5026daac0df0dc5/FLAG6180053b0 [2020-10-19 18:32:31,725 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:32:31,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2020-10-19 18:32:31,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88345e92d/3f1c86e9fbc4462eb5026daac0df0dc5/FLAG6180053b0 [2020-10-19 18:32:32,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88345e92d/3f1c86e9fbc4462eb5026daac0df0dc5 [2020-10-19 18:32:32,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:32:32,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:32:32,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:32:32,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:32:32,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:32:32,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:32:32" (1/1) ... [2020-10-19 18:32:32,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ed3584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32, skipping insertion in model container [2020-10-19 18:32:32,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:32:32" (1/1) ... [2020-10-19 18:32:32,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:32:32,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:32:32,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:32:32,336 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:32:32,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:32:32,365 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:32:32,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32 WrapperNode [2020-10-19 18:32:32,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:32:32,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:32:32,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:32:32,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:32:32,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32" (1/1) ... [2020-10-19 18:32:32,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32" (1/1) ... [2020-10-19 18:32:32,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:32:32,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:32:32,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:32:32,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:32:32,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32" (1/1) ... [2020-10-19 18:32:32,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32" (1/1) ... [2020-10-19 18:32:32,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32" (1/1) ... [2020-10-19 18:32:32,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32" (1/1) ... [2020-10-19 18:32:32,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32" (1/1) ... [2020-10-19 18:32:32,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32" (1/1) ... [2020-10-19 18:32:32,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32" (1/1) ... [2020-10-19 18:32:32,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:32:32,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:32:32,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:32:32,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:32:32,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32" (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 [2020-10-19 18:32:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-19 18:32:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-19 18:32:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:32:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:32:32,732 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:32:32,732 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 18:32:32,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:32 BoogieIcfgContainer [2020-10-19 18:32:32,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:32:32,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:32:32,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:32:32,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:32:32,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:32:32" (1/3) ... [2020-10-19 18:32:32,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781bd376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:32:32, skipping insertion in model container [2020-10-19 18:32:32,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:32:32" (2/3) ... [2020-10-19 18:32:32,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781bd376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:32:32, skipping insertion in model container [2020-10-19 18:32:32,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:32" (3/3) ... [2020-10-19 18:32:32,743 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5.c [2020-10-19 18:32:32,755 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:32:32,762 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-19 18:32:32,776 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-19 18:32:32,802 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:32:32,802 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:32:32,802 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:32:32,802 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:32:32,803 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:32:32,803 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:32:32,803 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:32:32,803 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:32:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-19 18:32:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:32:32,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:32,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:32,830 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:32,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:32,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1461861353, now seen corresponding path program 1 times [2020-10-19 18:32:32,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:32,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571121742] [2020-10-19 18:32:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:33,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571121742] [2020-10-19 18:32:33,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:33,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:32:33,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216914353] [2020-10-19 18:32:33,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:32:33,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:33,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:32:33,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:32:33,158 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-10-19 18:32:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:33,290 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-10-19 18:32:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:32:33,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-19 18:32:33,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:33,305 INFO L225 Difference]: With dead ends: 44 [2020-10-19 18:32:33,305 INFO L226 Difference]: Without dead ends: 28 [2020-10-19 18:32:33,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:32:33,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-19 18:32:33,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2020-10-19 18:32:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 18:32:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-19 18:32:33,348 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2020-10-19 18:32:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:33,348 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-19 18:32:33,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:32:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-19 18:32:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:32:33,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:33,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:33,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:32:33,351 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:33,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:33,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1461861577, now seen corresponding path program 1 times [2020-10-19 18:32:33,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:33,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56789244] [2020-10-19 18:32:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:33,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56789244] [2020-10-19 18:32:33,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:33,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:32:33,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745733237] [2020-10-19 18:32:33,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:32:33,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:33,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:32:33,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:32:33,442 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-10-19 18:32:33,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:33,543 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-10-19 18:32:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:32:33,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-19 18:32:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:33,546 INFO L225 Difference]: With dead ends: 34 [2020-10-19 18:32:33,547 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 18:32:33,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:32:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 18:32:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2020-10-19 18:32:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-19 18:32:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-19 18:32:33,565 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2020-10-19 18:32:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:33,566 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-19 18:32:33,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:32:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-19 18:32:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:32:33,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:33,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:33,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:32:33,570 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:33,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:33,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1926938272, now seen corresponding path program 1 times [2020-10-19 18:32:33,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:33,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225139861] [2020-10-19 18:32:33,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:33,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225139861] [2020-10-19 18:32:33,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:33,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:32:33,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975514343] [2020-10-19 18:32:33,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:32:33,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:33,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:32:33,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:32:33,650 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-10-19 18:32:33,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:33,711 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-10-19 18:32:33,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:32:33,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-19 18:32:33,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:33,714 INFO L225 Difference]: With dead ends: 33 [2020-10-19 18:32:33,714 INFO L226 Difference]: Without dead ends: 32 [2020-10-19 18:32:33,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:32:33,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-19 18:32:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-10-19 18:32:33,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-19 18:32:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-19 18:32:33,725 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 8 [2020-10-19 18:32:33,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:33,725 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-19 18:32:33,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:32:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-19 18:32:33,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:32:33,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:33,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:33,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:32:33,727 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:33,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1926931321, now seen corresponding path program 1 times [2020-10-19 18:32:33,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:33,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115706173] [2020-10-19 18:32:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:33,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115706173] [2020-10-19 18:32:33,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:33,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:32:33,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507423931] [2020-10-19 18:32:33,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:32:33,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:33,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:32:33,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:32:33,766 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-19 18:32:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:33,811 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-19 18:32:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:32:33,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-19 18:32:33,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:33,812 INFO L225 Difference]: With dead ends: 32 [2020-10-19 18:32:33,812 INFO L226 Difference]: Without dead ends: 31 [2020-10-19 18:32:33,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:32:33,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-19 18:32:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-19 18:32:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-19 18:32:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-19 18:32:33,820 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 8 [2020-10-19 18:32:33,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:33,820 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-19 18:32:33,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:32:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-19 18:32:33,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 18:32:33,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:33,821 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:33,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:32:33,822 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:33,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:33,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1954337320, now seen corresponding path program 1 times [2020-10-19 18:32:33,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:33,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662719624] [2020-10-19 18:32:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:33,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662719624] [2020-10-19 18:32:33,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553599923] [2020-10-19 18:32:33,881 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 [2020-10-19 18:32:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:33,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:32:33,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:34,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:32:34,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2020-10-19 18:32:34,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898648129] [2020-10-19 18:32:34,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:32:34,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:34,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:32:34,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:32:34,021 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-19 18:32:34,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:34,119 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-19 18:32:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:32:34,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-19 18:32:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:34,124 INFO L225 Difference]: With dead ends: 43 [2020-10-19 18:32:34,125 INFO L226 Difference]: Without dead ends: 42 [2020-10-19 18:32:34,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:32:34,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-19 18:32:34,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-19 18:32:34,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-19 18:32:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-19 18:32:34,137 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 13 [2020-10-19 18:32:34,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:34,137 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-19 18:32:34,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:32:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-19 18:32:34,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 18:32:34,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:34,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:34,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:34,356 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:34,357 INFO L82 PathProgramCache]: Analyzing trace with hash -906050173, now seen corresponding path program 1 times [2020-10-19 18:32:34,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:34,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481196018] [2020-10-19 18:32:34,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:34,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:34,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481196018] [2020-10-19 18:32:34,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265697035] [2020-10-19 18:32:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-19 18:32:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:34,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:32:34,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:34,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:34,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-19 18:32:34,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216890277] [2020-10-19 18:32:34,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:32:34,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:34,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:32:34,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:32:34,517 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2020-10-19 18:32:34,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:34,717 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-10-19 18:32:34,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:32:34,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-19 18:32:34,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:34,719 INFO L225 Difference]: With dead ends: 75 [2020-10-19 18:32:34,719 INFO L226 Difference]: Without dead ends: 73 [2020-10-19 18:32:34,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:32:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-19 18:32:34,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-10-19 18:32:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-19 18:32:34,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-10-19 18:32:34,731 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 13 [2020-10-19 18:32:34,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:34,732 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-10-19 18:32:34,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:32:34,732 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-10-19 18:32:34,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 18:32:34,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:34,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:34,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:34,949 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:34,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:34,950 INFO L82 PathProgramCache]: Analyzing trace with hash -906049949, now seen corresponding path program 1 times [2020-10-19 18:32:34,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:34,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41191697] [2020-10-19 18:32:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:35,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41191697] [2020-10-19 18:32:35,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142415665] [2020-10-19 18:32:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-19 18:32:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:35,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:32:35,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:35,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:35,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:35,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-19 18:32:35,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381228379] [2020-10-19 18:32:35,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:32:35,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:35,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:32:35,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:32:35,085 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 7 states. [2020-10-19 18:32:35,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:35,255 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-19 18:32:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:32:35,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-19 18:32:35,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:35,257 INFO L225 Difference]: With dead ends: 67 [2020-10-19 18:32:35,257 INFO L226 Difference]: Without dead ends: 65 [2020-10-19 18:32:35,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:32:35,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-19 18:32:35,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 21. [2020-10-19 18:32:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-19 18:32:35,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-19 18:32:35,265 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 13 [2020-10-19 18:32:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:35,265 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-19 18:32:35,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:32:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-19 18:32:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:32:35,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:35,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:35,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:35,481 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:35,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:35,482 INFO L82 PathProgramCache]: Analyzing trace with hash 454907873, now seen corresponding path program 1 times [2020-10-19 18:32:35,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:35,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432988387] [2020-10-19 18:32:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:35,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432988387] [2020-10-19 18:32:35,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067487610] [2020-10-19 18:32:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) [2020-10-19 18:32:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:35,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:32:35,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:35,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:35,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-19 18:32:35,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708535027] [2020-10-19 18:32:35,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:32:35,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:35,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:32:35,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:32:35,577 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 7 states. [2020-10-19 18:32:35,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:35,635 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-10-19 18:32:35,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:32:35,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-19 18:32:35,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:35,636 INFO L225 Difference]: With dead ends: 34 [2020-10-19 18:32:35,637 INFO L226 Difference]: Without dead ends: 33 [2020-10-19 18:32:35,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:32:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-19 18:32:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-10-19 18:32:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 18:32:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-19 18:32:35,643 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 14 [2020-10-19 18:32:35,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:35,644 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-19 18:32:35,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:32:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-19 18:32:35,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:32:35,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:35,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:35,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:35,858 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:35,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:35,859 INFO L82 PathProgramCache]: Analyzing trace with hash 454914824, now seen corresponding path program 1 times [2020-10-19 18:32:35,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:35,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142157732] [2020-10-19 18:32:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:35,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142157732] [2020-10-19 18:32:35,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881284540] [2020-10-19 18:32:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-19 18:32:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:35,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:32:35,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:35,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:32:35,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2020-10-19 18:32:35,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602102704] [2020-10-19 18:32:35,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:32:35,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:35,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:32:35,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:32:35,987 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-19 18:32:36,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:36,062 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-10-19 18:32:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:32:36,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-19 18:32:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:36,063 INFO L225 Difference]: With dead ends: 38 [2020-10-19 18:32:36,063 INFO L226 Difference]: Without dead ends: 37 [2020-10-19 18:32:36,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:32:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-19 18:32:36,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-10-19 18:32:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-19 18:32:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-19 18:32:36,071 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 14 [2020-10-19 18:32:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:36,071 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-19 18:32:36,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:32:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-19 18:32:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:32:36,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:36,072 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:36,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:36,287 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:36,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1977215750, now seen corresponding path program 1 times [2020-10-19 18:32:36,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:36,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901300525] [2020-10-19 18:32:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:36,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901300525] [2020-10-19 18:32:36,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869929917] [2020-10-19 18:32:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-19 18:32:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:36,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:32:36,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:36,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:36,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-19 18:32:36,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896763955] [2020-10-19 18:32:36,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:32:36,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:36,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:32:36,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:32:36,408 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-19 18:32:36,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:36,536 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-19 18:32:36,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:32:36,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-19 18:32:36,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:36,537 INFO L225 Difference]: With dead ends: 44 [2020-10-19 18:32:36,537 INFO L226 Difference]: Without dead ends: 43 [2020-10-19 18:32:36,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:32:36,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-19 18:32:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-10-19 18:32:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-19 18:32:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-19 18:32:36,553 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 14 [2020-10-19 18:32:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:36,553 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-19 18:32:36,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:32:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-19 18:32:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:32:36,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:36,556 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:36,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:36,769 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:36,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1977222701, now seen corresponding path program 1 times [2020-10-19 18:32:36,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:36,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816727684] [2020-10-19 18:32:36,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:36,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816727684] [2020-10-19 18:32:36,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910595242] [2020-10-19 18:32:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order 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 [2020-10-19 18:32:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:36,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:32:36,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:36,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:36,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-19 18:32:36,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878270309] [2020-10-19 18:32:36,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:32:36,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:36,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:32:36,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:32:36,892 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 7 states. [2020-10-19 18:32:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:36,997 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-19 18:32:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:32:36,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-19 18:32:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:36,999 INFO L225 Difference]: With dead ends: 43 [2020-10-19 18:32:36,999 INFO L226 Difference]: Without dead ends: 42 [2020-10-19 18:32:37,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:32:37,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-19 18:32:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-19 18:32:37,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-19 18:32:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-19 18:32:37,012 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 14 [2020-10-19 18:32:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:37,012 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-19 18:32:37,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:32:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-19 18:32:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:32:37,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:37,014 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-10-19 18:32:37,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:37,216 INFO L429 AbstractCegarLoop]: === Iteration 12 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:37,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:37,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1070544478, now seen corresponding path program 2 times [2020-10-19 18:32:37,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:37,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85324191] [2020-10-19 18:32:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:37,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85324191] [2020-10-19 18:32:37,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468613841] [2020-10-19 18:32:37,284 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) [2020-10-19 18:32:37,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:32:37,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:32:37,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:32:37,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:37,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:37,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2020-10-19 18:32:37,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767919708] [2020-10-19 18:32:37,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 18:32:37,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:37,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 18:32:37,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:32:37,417 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 14 states. [2020-10-19 18:32:37,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:37,976 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2020-10-19 18:32:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-19 18:32:37,977 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2020-10-19 18:32:37,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:37,978 INFO L225 Difference]: With dead ends: 120 [2020-10-19 18:32:37,978 INFO L226 Difference]: Without dead ends: 104 [2020-10-19 18:32:37,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2020-10-19 18:32:37,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-19 18:32:37,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 68. [2020-10-19 18:32:37,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:32:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2020-10-19 18:32:37,992 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 20 [2020-10-19 18:32:37,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:37,992 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2020-10-19 18:32:37,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 18:32:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2020-10-19 18:32:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:32:37,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:37,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:38,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-19 18:32:38,210 INFO L429 AbstractCegarLoop]: === Iteration 13 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:38,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:38,211 INFO L82 PathProgramCache]: Analyzing trace with hash 451770350, now seen corresponding path program 1 times [2020-10-19 18:32:38,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:38,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918998979] [2020-10-19 18:32:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:38,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918998979] [2020-10-19 18:32:38,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288439659] [2020-10-19 18:32:38,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-19 18:32:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:38,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:32:38,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:38,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:38,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-19 18:32:38,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964320120] [2020-10-19 18:32:38,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:32:38,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:38,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:32:38,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:32:38,317 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand 9 states. [2020-10-19 18:32:38,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:38,457 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-10-19 18:32:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:32:38,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-19 18:32:38,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:38,459 INFO L225 Difference]: With dead ends: 86 [2020-10-19 18:32:38,459 INFO L226 Difference]: Without dead ends: 85 [2020-10-19 18:32:38,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:32:38,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-19 18:32:38,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68. [2020-10-19 18:32:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:32:38,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2020-10-19 18:32:38,469 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 20 [2020-10-19 18:32:38,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:38,470 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2020-10-19 18:32:38,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:32:38,470 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2020-10-19 18:32:38,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:32:38,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:38,471 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:38,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:38,687 INFO L429 AbstractCegarLoop]: === Iteration 14 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:38,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:38,687 INFO L82 PathProgramCache]: Analyzing trace with hash -147215097, now seen corresponding path program 1 times [2020-10-19 18:32:38,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:38,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226455111] [2020-10-19 18:32:38,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 18:32:38,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226455111] [2020-10-19 18:32:38,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:32:38,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:32:38,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876117570] [2020-10-19 18:32:38,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:32:38,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:38,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:32:38,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:32:38,727 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand 5 states. [2020-10-19 18:32:38,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:38,779 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-19 18:32:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:32:38,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-19 18:32:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:38,781 INFO L225 Difference]: With dead ends: 72 [2020-10-19 18:32:38,781 INFO L226 Difference]: Without dead ends: 71 [2020-10-19 18:32:38,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:32:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-19 18:32:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-10-19 18:32:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-19 18:32:38,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-19 18:32:38,791 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 20 [2020-10-19 18:32:38,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:38,791 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-19 18:32:38,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:32:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-19 18:32:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:32:38,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:38,792 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:38,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 18:32:38,793 INFO L429 AbstractCegarLoop]: === Iteration 15 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:38,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:38,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1375092780, now seen corresponding path program 2 times [2020-10-19 18:32:38,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:38,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052339792] [2020-10-19 18:32:38,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:38,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052339792] [2020-10-19 18:32:38,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884291966] [2020-10-19 18:32:38,855 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-19 18:32:38,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:32:38,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:32:38,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:32:38,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:38,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:38,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-19 18:32:38,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657052398] [2020-10-19 18:32:38,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:32:38,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:38,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:32:38,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:32:38,903 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 9 states. [2020-10-19 18:32:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:39,042 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-10-19 18:32:39,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 18:32:39,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-19 18:32:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:39,043 INFO L225 Difference]: With dead ends: 88 [2020-10-19 18:32:39,043 INFO L226 Difference]: Without dead ends: 87 [2020-10-19 18:32:39,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:32:39,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-19 18:32:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 66. [2020-10-19 18:32:39,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-19 18:32:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-19 18:32:39,054 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 20 [2020-10-19 18:32:39,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:39,054 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-19 18:32:39,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:32:39,054 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-19 18:32:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:32:39,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:39,056 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-10-19 18:32:39,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-19 18:32:39,269 INFO L429 AbstractCegarLoop]: === Iteration 16 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:39,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:39,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1375099731, now seen corresponding path program 2 times [2020-10-19 18:32:39,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:39,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222127147] [2020-10-19 18:32:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:39,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222127147] [2020-10-19 18:32:39,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617152329] [2020-10-19 18:32:39,330 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 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 [2020-10-19 18:32:39,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:32:39,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:32:39,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:32:39,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:39,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:39,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-19 18:32:39,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411490373] [2020-10-19 18:32:39,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:32:39,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:39,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:32:39,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:32:39,388 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 9 states. [2020-10-19 18:32:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:39,515 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2020-10-19 18:32:39,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:32:39,516 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-19 18:32:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:39,516 INFO L225 Difference]: With dead ends: 90 [2020-10-19 18:32:39,517 INFO L226 Difference]: Without dead ends: 89 [2020-10-19 18:32:39,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:32:39,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-19 18:32:39,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2020-10-19 18:32:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:32:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-19 18:32:39,526 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 20 [2020-10-19 18:32:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:39,526 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-19 18:32:39,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:32:39,527 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-19 18:32:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:32:39,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:39,528 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:39,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-19 18:32:39,740 INFO L429 AbstractCegarLoop]: === Iteration 17 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:39,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:39,741 INFO L82 PathProgramCache]: Analyzing trace with hash -411380497, now seen corresponding path program 2 times [2020-10-19 18:32:39,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:39,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878428407] [2020-10-19 18:32:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:39,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878428407] [2020-10-19 18:32:39,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738311923] [2020-10-19 18:32:39,797 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 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 [2020-10-19 18:32:39,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:32:39,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:32:39,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 18:32:39,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:39,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:39,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 12 [2020-10-19 18:32:39,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923286357] [2020-10-19 18:32:39,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 18:32:39,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:39,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 18:32:39,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:32:39,906 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 13 states. [2020-10-19 18:32:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:40,203 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-10-19 18:32:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:32:40,204 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-19 18:32:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:40,205 INFO L225 Difference]: With dead ends: 87 [2020-10-19 18:32:40,205 INFO L226 Difference]: Without dead ends: 86 [2020-10-19 18:32:40,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2020-10-19 18:32:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-19 18:32:40,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2020-10-19 18:32:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:32:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-19 18:32:40,220 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 26 [2020-10-19 18:32:40,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:40,221 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-19 18:32:40,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 18:32:40,221 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-19 18:32:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:32:40,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:40,223 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:40,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-19 18:32:40,436 INFO L429 AbstractCegarLoop]: === Iteration 18 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:40,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:40,437 INFO L82 PathProgramCache]: Analyzing trace with hash 511941933, now seen corresponding path program 2 times [2020-10-19 18:32:40,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:40,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947510793] [2020-10-19 18:32:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:40,516 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 18:32:40,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947510793] [2020-10-19 18:32:40,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788090994] [2020-10-19 18:32:40,517 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 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 [2020-10-19 18:32:40,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:32:40,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:32:40,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 18:32:40,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 18:32:40,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:40,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-19 18:32:40,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712580481] [2020-10-19 18:32:40,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:32:40,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:40,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:32:40,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:32:40,590 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 7 states. [2020-10-19 18:32:40,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:40,682 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-19 18:32:40,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:32:40,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-19 18:32:40,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:40,684 INFO L225 Difference]: With dead ends: 87 [2020-10-19 18:32:40,684 INFO L226 Difference]: Without dead ends: 86 [2020-10-19 18:32:40,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:32:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-19 18:32:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 68. [2020-10-19 18:32:40,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:32:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2020-10-19 18:32:40,700 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 26 [2020-10-19 18:32:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:40,700 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2020-10-19 18:32:40,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:32:40,701 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2020-10-19 18:32:40,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:32:40,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:40,703 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:40,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-19 18:32:40,918 INFO L429 AbstractCegarLoop]: === Iteration 19 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:40,918 INFO L82 PathProgramCache]: Analyzing trace with hash 511948884, now seen corresponding path program 3 times [2020-10-19 18:32:40,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:40,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732951525] [2020-10-19 18:32:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:40,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732951525] [2020-10-19 18:32:40,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096198666] [2020-10-19 18:32:40,999 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 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 [2020-10-19 18:32:41,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-19 18:32:41,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:32:41,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 18:32:41,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:32:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:41,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:41,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-19 18:32:41,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307825390] [2020-10-19 18:32:41,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:32:41,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:41,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:32:41,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:32:41,083 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand 11 states. [2020-10-19 18:32:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:41,359 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2020-10-19 18:32:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-19 18:32:41,363 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-19 18:32:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:41,365 INFO L225 Difference]: With dead ends: 117 [2020-10-19 18:32:41,365 INFO L226 Difference]: Without dead ends: 116 [2020-10-19 18:32:41,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2020-10-19 18:32:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-19 18:32:41,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2020-10-19 18:32:41,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-19 18:32:41,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2020-10-19 18:32:41,377 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 26 [2020-10-19 18:32:41,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:41,378 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2020-10-19 18:32:41,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:32:41,378 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2020-10-19 18:32:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:32:41,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:32:41,379 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:32:41,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:41,593 INFO L429 AbstractCegarLoop]: === Iteration 20 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:32:41,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:32:41,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1109206892, now seen corresponding path program 4 times [2020-10-19 18:32:41,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:32:41,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900989440] [2020-10-19 18:32:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:32:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:32:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:32:41,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900989440] [2020-10-19 18:32:41,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517702240] [2020-10-19 18:32:41,689 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-19 18:32:41,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-19 18:32:41,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:32:41,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:32:41,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 18:32:41,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:32:41,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2020-10-19 18:32:41,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722922748] [2020-10-19 18:32:41,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-19 18:32:41,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:32:41,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-19 18:32:41,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-19 18:32:41,833 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 17 states. [2020-10-19 18:32:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:32:41,985 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2020-10-19 18:32:41,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:32:41,987 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 26 [2020-10-19 18:32:41,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:32:41,988 INFO L225 Difference]: With dead ends: 88 [2020-10-19 18:32:41,988 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 18:32:41,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-10-19 18:32:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 18:32:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 18:32:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 18:32:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 18:32:41,991 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-10-19 18:32:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:32:41,991 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:32:41,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-19 18:32:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:32:41,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 18:32:42,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:32:42,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 18:32:42,522 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-19 18:32:42,703 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-19 18:32:42,870 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-19 18:32:43,032 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-19 18:32:43,199 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-19 18:32:43,334 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-10-19 18:32:43,437 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-10-19 18:32:43,734 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 31 [2020-10-19 18:32:43,869 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 1 [2020-10-19 18:32:45,235 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 201 DAG size of output: 42 [2020-10-19 18:32:45,238 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-19 18:32:45,238 INFO L274 CegarLoopResult]: For program point fFINAL(lines 13 23) no Hoare annotation was computed. [2020-10-19 18:32:45,238 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-19 18:32:45,238 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-19 18:32:45,240 INFO L270 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse5 (+ |f_#in~y| 1))) (let ((.cse0 (not (<= |f_#in~y| 2147483647))) (.cse2 (not (<= |f_#in~x| .cse5))) (.cse1 (+ f_~y 1)) (.cse3 (not (<= |f_#in~x| 2147483647))) (.cse4 (not (<= 1 |f_#in~x|)))) (and (or (not (<= |f_#in~y| |f_#in~x|)) .cse0 (and (<= f_~y f_~x) (<= f_~x .cse1)) .cse2 .cse3 .cse4) (or .cse0 (not (<= 0 |f_#in~x|)) (and (not (= f_~y 0)) (<= f_~x 2147483647) (<= 0 f_~y) (<= f_~y 2147483647) (<= 1 f_~x)) .cse3 (not (<= 0 |f_#in~y|))) (or .cse0 .cse2 (<= .cse1 f_~x) (not (<= .cse5 |f_#in~x|)) .cse3 .cse4)))) [2020-10-19 18:32:45,240 INFO L274 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-10-19 18:32:45,240 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-19 18:32:45,241 INFO L274 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-10-19 18:32:45,241 INFO L270 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (let ((.cse0 (not (<= |f_#in~y| 2147483647))) (.cse1 (not (<= |f_#in~x| 2147483647))) (.cse2 (not (<= 0 |f_#in~y|)))) (and (or .cse0 (not (<= 0 |f_#in~x|)) .cse1 .cse2 (and (not (= f_~y 0)) (<= f_~x 2147483647) (<= 0 f_~y) (<= f_~y 2147483647) (<= 0 f_~x) (<= f_~x (+ f_~y 1)))) (or .cse0 .cse1 .cse2 (not (<= 1 |f_#in~x|))))) [2020-10-19 18:32:45,241 INFO L274 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-10-19 18:32:45,241 INFO L274 CegarLoopResult]: For program point L14(lines 14 22) no Hoare annotation was computed. [2020-10-19 18:32:45,241 INFO L274 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-19 18:32:45,241 INFO L274 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-19 18:32:45,241 INFO L274 CegarLoopResult]: For program point fEXIT(lines 13 23) no Hoare annotation was computed. [2020-10-19 18:32:45,242 INFO L277 CegarLoopResult]: At program point fENTRY(lines 13 23) the Hoare annotation is: true [2020-10-19 18:32:45,242 INFO L274 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-19 18:32:45,242 INFO L274 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-19 18:32:45,242 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 18:32:45,242 INFO L270 CegarLoopResult]: At program point L31(lines 25 32) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2020-10-19 18:32:45,242 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 18:32:45,242 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-10-19 18:32:45,242 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 18:32:45,242 INFO L274 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-10-19 18:32:45,243 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-10-19 18:32:45,243 INFO L274 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2020-10-19 18:32:45,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:32:45 BoogieIcfgContainer [2020-10-19 18:32:45,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:32:45,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:32:45,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:32:45,266 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:32:45,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:32:32" (3/4) ... [2020-10-19 18:32:45,271 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 18:32:45,278 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2020-10-19 18:32:45,285 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-19 18:32:45,286 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-19 18:32:45,349 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:32:45,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:32:45,351 INFO L168 Benchmark]: Toolchain (without parser) took 13241.44 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 303.6 MB). Free memory was 958.6 MB in the beginning and 1.1 GB in the end (delta: -130.4 MB). Peak memory consumption was 173.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:45,351 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:32:45,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.24 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:45,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.93 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:32:45,352 INFO L168 Benchmark]: Boogie Preprocessor took 77.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:45,353 INFO L168 Benchmark]: RCFGBuilder took 257.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:45,353 INFO L168 Benchmark]: TraceAbstraction took 12529.38 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 171.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.1 MB). Peak memory consumption was 438.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:45,354 INFO L168 Benchmark]: Witness Printer took 83.45 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:32:45,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 249.24 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.93 ms. Allocated memory is still 1.0 GB. Free memory is still 947.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 77.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 257.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12529.38 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 171.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.1 MB). Peak memory consumption was 438.0 MB. Max. memory is 11.5 GB. * Witness Printer took 83.45 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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: 25]: Loop Invariant Derived loop invariant: y <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.4s, OverallIterations: 20, TraceHistogramMax: 4, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 289 SDtfs, 916 SDslu, 763 SDs, 0 SdLazy, 1509 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 510 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=19, 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, 20 MinimizatonAttempts, 284 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 47 PreInvPairs, 47 NumberOfFragments, 171 HoareAnnotationTreeSize, 47 FomulaSimplifications, 2746796 FormulaSimplificationTreeSizeReduction, 1.2s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1604646 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 608 NumberOfCodeBlocks, 599 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 573 ConstructedInterpolants, 0 QuantifiedInterpolants, 36969 SizeOfPredicates, 42 NumberOfNonLiveVariables, 766 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 92/365 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...