./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-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 0.1.25-9a8b2e8 [2020-10-20 06:25:22,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:25:22,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:25:22,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:25:22,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:25:22,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:25:22,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:25:22,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:25:22,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:25:22,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:25:22,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:25:22,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:25:22,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:25:22,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:25:22,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:25:22,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:25:22,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:25:22,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:25:22,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:25:22,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:25:22,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:25:22,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:25:22,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:25:22,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:25:22,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:25:22,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:25:22,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:25:22,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:25:22,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:25:22,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:25:22,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:25:22,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:25:22,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:25:22,865 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:25:22,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:25:22,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:25:22,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:25:22,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:25:22,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:25:22,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:25:22,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:25:22,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:25:22,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:25:22,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:25:22,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:25:22,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:25:22,892 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:25:22,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:25:22,893 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:25:22,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:25:22,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:25:22,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:25:22,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:25:22,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:25:22,894 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:25:22,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:25:22,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:25:22,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:25:22,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:25:22,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:25:22,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:25:22,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:25:22,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:25:22,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:25:22,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:25:22,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:25:22,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:25:22,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:25:22,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:25:22,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:25:22,898 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 [2020-10-20 06:25:23,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:25:23,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:25:23,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:25:23,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:25:23,114 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:25:23,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2020-10-20 06:25:23,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2dd7d81/8a7b255d724e411c8048b64341e38ee7/FLAG122319323 [2020-10-20 06:25:23,551 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:25:23,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex5.c [2020-10-20 06:25:23,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2dd7d81/8a7b255d724e411c8048b64341e38ee7/FLAG122319323 [2020-10-20 06:25:23,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2dd7d81/8a7b255d724e411c8048b64341e38ee7 [2020-10-20 06:25:23,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:25:23,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:25:23,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:23,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:25:23,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:25:23,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:23" (1/1) ... [2020-10-20 06:25:23,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322bb391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:23, skipping insertion in model container [2020-10-20 06:25:23,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:25:23" (1/1) ... [2020-10-20 06:25:23,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:25:23,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:25:24,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:24,290 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:25:24,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:25:24,318 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:25:24,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24 WrapperNode [2020-10-20 06:25:24,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:25:24,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:24,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:25:24,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:25:24,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24" (1/1) ... [2020-10-20 06:25:24,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24" (1/1) ... [2020-10-20 06:25:24,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:25:24,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:25:24,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:25:24,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:25:24,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24" (1/1) ... [2020-10-20 06:25:24,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24" (1/1) ... [2020-10-20 06:25:24,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24" (1/1) ... [2020-10-20 06:25:24,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24" (1/1) ... [2020-10-20 06:25:24,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24" (1/1) ... [2020-10-20 06:25:24,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24" (1/1) ... [2020-10-20 06:25:24,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24" (1/1) ... [2020-10-20 06:25:24,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:25:24,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:25:24,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:25:24,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:25:24,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:25:24,421 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-20 06:25:24,422 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-20 06:25:24,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:25:24,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:25:24,665 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:25:24,666 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:25:24,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:24 BoogieIcfgContainer [2020-10-20 06:25:24,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:25:24,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:25:24,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:25:24,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:25:24,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:25:23" (1/3) ... [2020-10-20 06:25:24,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fa6439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:24, skipping insertion in model container [2020-10-20 06:25:24,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:25:24" (2/3) ... [2020-10-20 06:25:24,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fa6439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:25:24, skipping insertion in model container [2020-10-20 06:25:24,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:24" (3/3) ... [2020-10-20 06:25:24,694 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex5.c [2020-10-20 06:25:24,723 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:25:24,730 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:25:24,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:25:24,768 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:25:24,768 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:25:24,768 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:25:24,768 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:25:24,768 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:25:24,768 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:25:24,768 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:25:24,769 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:25:24,786 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-20 06:25:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:25:24,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:24,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:24,793 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:24,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1461861353, now seen corresponding path program 1 times [2020-10-20 06:25:24,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:24,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918613075] [2020-10-20 06:25:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:24,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918613075] [2020-10-20 06:25:24,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:25,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:25:25,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618017492] [2020-10-20 06:25:25,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:25:25,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:25,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:25:25,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:25:25,023 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-10-20 06:25:25,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:25,146 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-10-20 06:25:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:25:25,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-20 06:25:25,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:25,157 INFO L225 Difference]: With dead ends: 44 [2020-10-20 06:25:25,158 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 06:25:25,161 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 [2020-10-20 06:25:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 06:25:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2020-10-20 06:25:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 06:25:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-20 06:25:25,192 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2020-10-20 06:25:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:25,192 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-20 06:25:25,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:25:25,192 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-20 06:25:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:25:25,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:25,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:25,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:25:25,194 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:25,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:25,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1461861577, now seen corresponding path program 1 times [2020-10-20 06:25:25,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:25,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210883891] [2020-10-20 06:25:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:25,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210883891] [2020-10-20 06:25:25,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:25,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:25:25,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149618895] [2020-10-20 06:25:25,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:25:25,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:25,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:25:25,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:25:25,255 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 5 states. [2020-10-20 06:25:25,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:25,317 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-10-20 06:25:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:25:25,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-20 06:25:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:25,319 INFO L225 Difference]: With dead ends: 34 [2020-10-20 06:25:25,319 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 06:25:25,320 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 [2020-10-20 06:25:25,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 06:25:25,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2020-10-20 06:25:25,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 06:25:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-20 06:25:25,327 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2020-10-20 06:25:25,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:25,327 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-20 06:25:25,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:25:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-20 06:25:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:25:25,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:25,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:25,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:25:25,329 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:25,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1926938272, now seen corresponding path program 1 times [2020-10-20 06:25:25,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:25,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477511917] [2020-10-20 06:25:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:25,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477511917] [2020-10-20 06:25:25,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:25,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:25:25,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156508799] [2020-10-20 06:25:25,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:25:25,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:25,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:25:25,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:25:25,371 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-10-20 06:25:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:25,418 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-10-20 06:25:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:25:25,419 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-20 06:25:25,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:25,420 INFO L225 Difference]: With dead ends: 33 [2020-10-20 06:25:25,420 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 06:25:25,421 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 [2020-10-20 06:25:25,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 06:25:25,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-10-20 06:25:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 06:25:25,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-20 06:25:25,428 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 8 [2020-10-20 06:25:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:25,428 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-20 06:25:25,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:25:25,428 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-20 06:25:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:25:25,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:25,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:25,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:25:25,430 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:25,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1926931321, now seen corresponding path program 1 times [2020-10-20 06:25:25,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:25,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185246123] [2020-10-20 06:25:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:25,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185246123] [2020-10-20 06:25:25,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:25,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:25:25,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172630425] [2020-10-20 06:25:25,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:25:25,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:25,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:25:25,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:25:25,471 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-20 06:25:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:25,514 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-20 06:25:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:25:25,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-20 06:25:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:25,516 INFO L225 Difference]: With dead ends: 32 [2020-10-20 06:25:25,516 INFO L226 Difference]: Without dead ends: 31 [2020-10-20 06:25:25,516 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 [2020-10-20 06:25:25,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-20 06:25:25,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-10-20 06:25:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 06:25:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-20 06:25:25,523 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 8 [2020-10-20 06:25:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:25,523 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-20 06:25:25,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:25:25,524 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-20 06:25:25,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 06:25:25,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:25,525 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:25,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:25:25,525 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:25,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:25,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1954337320, now seen corresponding path program 1 times [2020-10-20 06:25:25,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:25,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918517426] [2020-10-20 06:25:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:25,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918517426] [2020-10-20 06:25:25,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081060273] [2020-10-20 06:25:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:25,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:25:25,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:25,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:25:25,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2020-10-20 06:25:25,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744477199] [2020-10-20 06:25:25,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:25:25,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:25,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:25:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:25:25,774 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-20 06:25:25,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:25,865 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-20 06:25:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:25:25,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-20 06:25:25,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:25,867 INFO L225 Difference]: With dead ends: 43 [2020-10-20 06:25:25,867 INFO L226 Difference]: Without dead ends: 42 [2020-10-20 06:25:25,868 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 [2020-10-20 06:25:25,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-20 06:25:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-20 06:25:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 06:25:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-20 06:25:25,875 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 13 [2020-10-20 06:25:25,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:25,875 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-20 06:25:25,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:25:25,876 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-20 06:25:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 06:25:25,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:25,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:26,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:26,092 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:26,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:26,093 INFO L82 PathProgramCache]: Analyzing trace with hash -906050173, now seen corresponding path program 1 times [2020-10-20 06:25:26,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:26,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60868665] [2020-10-20 06:25:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:26,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60868665] [2020-10-20 06:25:26,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306125590] [2020-10-20 06:25:26,169 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) [2020-10-20 06:25:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:26,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:25:26,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:26,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:26,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-20 06:25:26,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469832279] [2020-10-20 06:25:26,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:25:26,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:26,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:25:26,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:25:26,255 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 7 states. [2020-10-20 06:25:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:26,444 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-10-20 06:25:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:25:26,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-20 06:25:26,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:26,446 INFO L225 Difference]: With dead ends: 75 [2020-10-20 06:25:26,447 INFO L226 Difference]: Without dead ends: 73 [2020-10-20 06:25:26,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:25:26,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-20 06:25:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-10-20 06:25:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 06:25:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-10-20 06:25:26,457 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 13 [2020-10-20 06:25:26,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:26,458 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-10-20 06:25:26,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:25:26,458 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-10-20 06:25:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 06:25:26,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:26,459 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:26,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:26,674 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:26,675 INFO L82 PathProgramCache]: Analyzing trace with hash -906049949, now seen corresponding path program 1 times [2020-10-20 06:25:26,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:26,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924757310] [2020-10-20 06:25:26,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:26,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924757310] [2020-10-20 06:25:26,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340635090] [2020-10-20 06:25:26,754 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 [2020-10-20 06:25:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:26,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:25:26,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:26,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:26,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-20 06:25:26,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145599345] [2020-10-20 06:25:26,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:25:26,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:26,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:25:26,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:25:26,825 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 7 states. [2020-10-20 06:25:26,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:26,993 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-20 06:25:26,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:25:26,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-20 06:25:26,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:26,994 INFO L225 Difference]: With dead ends: 67 [2020-10-20 06:25:26,995 INFO L226 Difference]: Without dead ends: 65 [2020-10-20 06:25:26,995 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 [2020-10-20 06:25:26,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-20 06:25:26,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 21. [2020-10-20 06:25:26,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:25:27,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-20 06:25:27,000 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 13 [2020-10-20 06:25:27,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:27,001 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-20 06:25:27,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:25:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-20 06:25:27,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:25:27,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:27,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:27,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:27,213 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:27,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:27,214 INFO L82 PathProgramCache]: Analyzing trace with hash 454907873, now seen corresponding path program 1 times [2020-10-20 06:25:27,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:27,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040480449] [2020-10-20 06:25:27,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:27,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040480449] [2020-10-20 06:25:27,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976443866] [2020-10-20 06:25:27,260 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:27,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:25:27,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:27,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:27,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 06:25:27,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852725948] [2020-10-20 06:25:27,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:25:27,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:27,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:25:27,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:25:27,302 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 7 states. [2020-10-20 06:25:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:27,365 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-10-20 06:25:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:25:27,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-20 06:25:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:27,366 INFO L225 Difference]: With dead ends: 34 [2020-10-20 06:25:27,366 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 06:25:27,367 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 [2020-10-20 06:25:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 06:25:27,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-10-20 06:25:27,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:25:27,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-20 06:25:27,372 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 14 [2020-10-20 06:25:27,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:27,373 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-20 06:25:27,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:25:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-20 06:25:27,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:25:27,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:27,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:27,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:27,586 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:27,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:27,587 INFO L82 PathProgramCache]: Analyzing trace with hash 454914824, now seen corresponding path program 1 times [2020-10-20 06:25:27,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:27,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148776977] [2020-10-20 06:25:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:27,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148776977] [2020-10-20 06:25:27,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927598335] [2020-10-20 06:25:27,639 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 [2020-10-20 06:25:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:27,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:25:27,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:27,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:25:27,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2020-10-20 06:25:27,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959717267] [2020-10-20 06:25:27,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:25:27,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:27,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:25:27,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:25:27,708 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-20 06:25:27,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:27,789 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-10-20 06:25:27,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:25:27,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 06:25:27,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:27,790 INFO L225 Difference]: With dead ends: 38 [2020-10-20 06:25:27,790 INFO L226 Difference]: Without dead ends: 37 [2020-10-20 06:25:27,791 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 [2020-10-20 06:25:27,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-20 06:25:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-10-20 06:25:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 06:25:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-20 06:25:27,797 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 14 [2020-10-20 06:25:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:27,797 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-20 06:25:27,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:25:27,798 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-20 06:25:27,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:25:27,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:27,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:28,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:28,013 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:28,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1977215750, now seen corresponding path program 1 times [2020-10-20 06:25:28,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:28,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638203577] [2020-10-20 06:25:28,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:28,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638203577] [2020-10-20 06:25:28,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023087315] [2020-10-20 06:25:28,058 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 [2020-10-20 06:25:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:28,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:25:28,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:28,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:28,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 06:25:28,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956820965] [2020-10-20 06:25:28,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:25:28,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:28,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:25:28,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:25:28,110 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-10-20 06:25:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:28,208 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-20 06:25:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:25:28,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-20 06:25:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:28,210 INFO L225 Difference]: With dead ends: 44 [2020-10-20 06:25:28,210 INFO L226 Difference]: Without dead ends: 43 [2020-10-20 06:25:28,210 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 [2020-10-20 06:25:28,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-20 06:25:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-10-20 06:25:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 06:25:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-10-20 06:25:28,217 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 14 [2020-10-20 06:25:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:28,218 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-10-20 06:25:28,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:25:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-10-20 06:25:28,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:25:28,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:28,219 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:28,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:28,432 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:28,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:28,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1977222701, now seen corresponding path program 1 times [2020-10-20 06:25:28,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:28,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260169912] [2020-10-20 06:25:28,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:28,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260169912] [2020-10-20 06:25:28,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657713074] [2020-10-20 06:25:28,473 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 [2020-10-20 06:25:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:28,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:25:28,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:28,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:28,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 06:25:28,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167483039] [2020-10-20 06:25:28,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:25:28,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:28,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:25:28,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:25:28,520 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 7 states. [2020-10-20 06:25:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:28,628 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-20 06:25:28,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:25:28,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-20 06:25:28,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:28,630 INFO L225 Difference]: With dead ends: 43 [2020-10-20 06:25:28,630 INFO L226 Difference]: Without dead ends: 42 [2020-10-20 06:25:28,631 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 [2020-10-20 06:25:28,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-20 06:25:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-20 06:25:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 06:25:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-20 06:25:28,640 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 14 [2020-10-20 06:25:28,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:28,641 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-20 06:25:28,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:25:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-20 06:25:28,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:25:28,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:28,645 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-10-20 06:25:28,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:28,846 INFO L429 AbstractCegarLoop]: === Iteration 12 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:28,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:28,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1070544478, now seen corresponding path program 2 times [2020-10-20 06:25:28,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:28,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938202415] [2020-10-20 06:25:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:28,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938202415] [2020-10-20 06:25:28,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930481519] [2020-10-20 06:25:28,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:28,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:25:28,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:25:28,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:25:28,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:29,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:29,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2020-10-20 06:25:29,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040405298] [2020-10-20 06:25:29,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 06:25:29,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:29,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 06:25:29,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:25:29,019 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 14 states. [2020-10-20 06:25:29,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:29,557 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2020-10-20 06:25:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-20 06:25:29,558 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2020-10-20 06:25:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:29,559 INFO L225 Difference]: With dead ends: 120 [2020-10-20 06:25:29,559 INFO L226 Difference]: Without dead ends: 104 [2020-10-20 06:25:29,561 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 [2020-10-20 06:25:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-20 06:25:29,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 68. [2020-10-20 06:25:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 06:25:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2020-10-20 06:25:29,573 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 20 [2020-10-20 06:25:29,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:29,573 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2020-10-20 06:25:29,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 06:25:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2020-10-20 06:25:29,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:25:29,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:29,575 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:29,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 06:25:29,779 INFO L429 AbstractCegarLoop]: === Iteration 13 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:29,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:29,779 INFO L82 PathProgramCache]: Analyzing trace with hash 451770350, now seen corresponding path program 1 times [2020-10-20 06:25:29,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:29,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891849976] [2020-10-20 06:25:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:29,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891849976] [2020-10-20 06:25:29,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666623994] [2020-10-20 06:25:29,833 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 [2020-10-20 06:25:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:29,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:25:29,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:29,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:29,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-20 06:25:29,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709262837] [2020-10-20 06:25:29,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:25:29,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:29,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:25:29,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:25:29,898 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand 9 states. [2020-10-20 06:25:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:30,037 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-10-20 06:25:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:25:30,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-20 06:25:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:30,039 INFO L225 Difference]: With dead ends: 86 [2020-10-20 06:25:30,039 INFO L226 Difference]: Without dead ends: 85 [2020-10-20 06:25:30,040 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 [2020-10-20 06:25:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-20 06:25:30,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68. [2020-10-20 06:25:30,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 06:25:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2020-10-20 06:25:30,051 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 20 [2020-10-20 06:25:30,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:30,051 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2020-10-20 06:25:30,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:25:30,052 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2020-10-20 06:25:30,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:25:30,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:30,053 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:30,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:30,267 INFO L429 AbstractCegarLoop]: === Iteration 14 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:30,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:30,268 INFO L82 PathProgramCache]: Analyzing trace with hash -147215097, now seen corresponding path program 1 times [2020-10-20 06:25:30,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:30,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008532117] [2020-10-20 06:25:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:30,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:25:30,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008532117] [2020-10-20 06:25:30,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:25:30,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:25:30,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055846088] [2020-10-20 06:25:30,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:25:30,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:30,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:25:30,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:25:30,308 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand 5 states. [2020-10-20 06:25:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:30,356 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2020-10-20 06:25:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:25:30,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 06:25:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:30,357 INFO L225 Difference]: With dead ends: 72 [2020-10-20 06:25:30,357 INFO L226 Difference]: Without dead ends: 71 [2020-10-20 06:25:30,358 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 [2020-10-20 06:25:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-20 06:25:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-10-20 06:25:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 06:25:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-20 06:25:30,378 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 20 [2020-10-20 06:25:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:30,378 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-20 06:25:30,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:25:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-20 06:25:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:25:30,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:30,383 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:30,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-20 06:25:30,384 INFO L429 AbstractCegarLoop]: === Iteration 15 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:30,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:30,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1375092780, now seen corresponding path program 2 times [2020-10-20 06:25:30,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:30,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666893551] [2020-10-20 06:25:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:30,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666893551] [2020-10-20 06:25:30,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41204152] [2020-10-20 06:25:30,467 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) [2020-10-20 06:25:30,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:25:30,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:25:30,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:25:30,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:30,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:30,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:30,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-20 06:25:30,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298909390] [2020-10-20 06:25:30,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:25:30,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:30,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:25:30,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:25:30,507 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 9 states. [2020-10-20 06:25:30,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:30,664 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-10-20 06:25:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:25:30,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-20 06:25:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:30,665 INFO L225 Difference]: With dead ends: 88 [2020-10-20 06:25:30,665 INFO L226 Difference]: Without dead ends: 87 [2020-10-20 06:25:30,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:25:30,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-20 06:25:30,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 66. [2020-10-20 06:25:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-20 06:25:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-20 06:25:30,676 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 20 [2020-10-20 06:25:30,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:30,676 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-20 06:25:30,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:25:30,677 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-20 06:25:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:25:30,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:30,678 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-10-20 06:25:30,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 06:25:30,894 INFO L429 AbstractCegarLoop]: === Iteration 16 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:30,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:30,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1375099731, now seen corresponding path program 2 times [2020-10-20 06:25:30,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:30,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110699505] [2020-10-20 06:25:30,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:30,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110699505] [2020-10-20 06:25:30,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87536209] [2020-10-20 06:25:30,962 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 [2020-10-20 06:25:30,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:25:30,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:25:30,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:25:30,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:31,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:31,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-20 06:25:31,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588057717] [2020-10-20 06:25:31,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:25:31,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:31,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:25:31,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:25:31,003 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 9 states. [2020-10-20 06:25:31,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:31,138 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2020-10-20 06:25:31,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:25:31,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-20 06:25:31,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:31,139 INFO L225 Difference]: With dead ends: 90 [2020-10-20 06:25:31,139 INFO L226 Difference]: Without dead ends: 89 [2020-10-20 06:25:31,140 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 [2020-10-20 06:25:31,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-20 06:25:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2020-10-20 06:25:31,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-20 06:25:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-20 06:25:31,152 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 20 [2020-10-20 06:25:31,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:31,152 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-20 06:25:31,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:25:31,152 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-20 06:25:31,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:25:31,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:31,154 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:31,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 06:25:31,367 INFO L429 AbstractCegarLoop]: === Iteration 17 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:31,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:31,367 INFO L82 PathProgramCache]: Analyzing trace with hash -411380497, now seen corresponding path program 2 times [2020-10-20 06:25:31,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:31,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233381817] [2020-10-20 06:25:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:31,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233381817] [2020-10-20 06:25:31,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649839229] [2020-10-20 06:25:31,434 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 [2020-10-20 06:25:31,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:25:31,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:25:31,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:25:31,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:31,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:31,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 12 [2020-10-20 06:25:31,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439306438] [2020-10-20 06:25:31,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:25:31,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:31,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:25:31,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:25:31,550 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 13 states. [2020-10-20 06:25:31,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:31,798 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-10-20 06:25:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 06:25:31,798 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-20 06:25:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:31,799 INFO L225 Difference]: With dead ends: 87 [2020-10-20 06:25:31,800 INFO L226 Difference]: Without dead ends: 86 [2020-10-20 06:25:31,800 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 [2020-10-20 06:25:31,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-20 06:25:31,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2020-10-20 06:25:31,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-20 06:25:31,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-20 06:25:31,809 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 26 [2020-10-20 06:25:31,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:31,809 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-20 06:25:31,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:25:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-20 06:25:31,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:25:31,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:31,811 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:32,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 06:25:32,026 INFO L429 AbstractCegarLoop]: === Iteration 18 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:32,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:32,026 INFO L82 PathProgramCache]: Analyzing trace with hash 511941933, now seen corresponding path program 2 times [2020-10-20 06:25:32,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:32,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13452555] [2020-10-20 06:25:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:25:32,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13452555] [2020-10-20 06:25:32,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605593149] [2020-10-20 06:25:32,070 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 [2020-10-20 06:25:32,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:25:32,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:25:32,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 06:25:32,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:25:32,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:32,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 06:25:32,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271025187] [2020-10-20 06:25:32,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:25:32,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:32,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:25:32,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:25:32,135 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 7 states. [2020-10-20 06:25:32,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:32,224 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-20 06:25:32,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:25:32,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-20 06:25:32,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:32,226 INFO L225 Difference]: With dead ends: 87 [2020-10-20 06:25:32,226 INFO L226 Difference]: Without dead ends: 86 [2020-10-20 06:25:32,227 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 [2020-10-20 06:25:32,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-20 06:25:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 68. [2020-10-20 06:25:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 06:25:32,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2020-10-20 06:25:32,235 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 26 [2020-10-20 06:25:32,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:32,235 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2020-10-20 06:25:32,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:25:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2020-10-20 06:25:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:25:32,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:32,237 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:32,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 06:25:32,452 INFO L429 AbstractCegarLoop]: === Iteration 19 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:32,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:32,452 INFO L82 PathProgramCache]: Analyzing trace with hash 511948884, now seen corresponding path program 3 times [2020-10-20 06:25:32,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:32,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18655928] [2020-10-20 06:25:32,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:32,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18655928] [2020-10-20 06:25:32,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888224381] [2020-10-20 06:25:32,520 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 [2020-10-20 06:25:32,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-20 06:25:32,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:25:32,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:25:32,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:25:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:32,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:32,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-20 06:25:32,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435649525] [2020-10-20 06:25:32,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:25:32,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:32,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:25:32,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:25:32,594 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand 11 states. [2020-10-20 06:25:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:32,840 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2020-10-20 06:25:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-20 06:25:32,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-20 06:25:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:32,842 INFO L225 Difference]: With dead ends: 117 [2020-10-20 06:25:32,843 INFO L226 Difference]: Without dead ends: 116 [2020-10-20 06:25:32,844 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 [2020-10-20 06:25:32,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-20 06:25:32,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2020-10-20 06:25:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 06:25:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2020-10-20 06:25:32,856 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 26 [2020-10-20 06:25:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:32,858 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2020-10-20 06:25:32,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:25:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2020-10-20 06:25:32,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:25:32,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:25:32,860 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:25:33,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:33,074 INFO L429 AbstractCegarLoop]: === Iteration 20 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:25:33,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:25:33,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1109206892, now seen corresponding path program 4 times [2020-10-20 06:25:33,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:25:33,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602212113] [2020-10-20 06:25:33,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:25:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:25:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:25:33,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602212113] [2020-10-20 06:25:33,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863973535] [2020-10-20 06:25:33,148 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) [2020-10-20 06:25:33,176 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:25:33,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:25:33,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:25:33,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-20 06:25:33,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:25:33,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2020-10-20 06:25:33,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417724146] [2020-10-20 06:25:33,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-20 06:25:33,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:25:33,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-20 06:25:33,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:25:33,262 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 17 states. [2020-10-20 06:25:33,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:25:33,419 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2020-10-20 06:25:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:25:33,421 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 26 [2020-10-20 06:25:33,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:25:33,421 INFO L225 Difference]: With dead ends: 88 [2020-10-20 06:25:33,421 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:25:33,422 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 [2020-10-20 06:25:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:25:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:25:33,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:25:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:25:33,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-10-20 06:25:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:25:33,424 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:25:33,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-20 06:25:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:25:33,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:25:33,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:25:33,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:25:33,920 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-20 06:25:34,125 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-20 06:25:34,355 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-20 06:25:34,538 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-20 06:25:34,718 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-20 06:25:34,847 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-10-20 06:25:35,126 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 31 [2020-10-20 06:25:36,468 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 201 DAG size of output: 42 [2020-10-20 06:25:36,471 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-20 06:25:36,471 INFO L274 CegarLoopResult]: For program point fFINAL(lines 13 23) no Hoare annotation was computed. [2020-10-20 06:25:36,472 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-20 06:25:36,472 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-20 06:25:36,472 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)))) [2020-10-20 06:25:36,472 INFO L274 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-10-20 06:25:36,472 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-20 06:25:36,473 INFO L274 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-10-20 06:25:36,473 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|))))) [2020-10-20 06:25:36,473 INFO L274 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-10-20 06:25:36,474 INFO L274 CegarLoopResult]: For program point L14(lines 14 22) no Hoare annotation was computed. [2020-10-20 06:25:36,474 INFO L274 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:25:36,474 INFO L274 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-20 06:25:36,474 INFO L274 CegarLoopResult]: For program point fEXIT(lines 13 23) no Hoare annotation was computed. [2020-10-20 06:25:36,474 INFO L277 CegarLoopResult]: At program point fENTRY(lines 13 23) the Hoare annotation is: true [2020-10-20 06:25:36,475 INFO L274 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-20 06:25:36,475 INFO L274 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:25:36,475 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:25:36,475 INFO L270 CegarLoopResult]: At program point L31(lines 25 32) the Hoare annotation is: (<= ULTIMATE.start_main_~y~0 2147483647) [2020-10-20 06:25:36,475 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:25:36,476 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)) [2020-10-20 06:25:36,476 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:25:36,476 INFO L274 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-10-20 06:25:36,476 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-10-20 06:25:36,476 INFO L274 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2020-10-20 06:25:36,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:25:36 BoogieIcfgContainer [2020-10-20 06:25:36,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:25:36,495 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:25:36,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:25:36,496 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:25:36,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:25:24" (3/4) ... [2020-10-20 06:25:36,500 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:25:36,514 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2020-10-20 06:25:36,522 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 06:25:36,522 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 06:25:36,568 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:25:36,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:25:36,570 INFO L168 Benchmark]: Toolchain (without parser) took 12637.16 ms. Allocated memory was 34.6 MB in the beginning and 77.6 MB in the end (delta: 43.0 MB). Free memory was 15.5 MB in the beginning and 56.7 MB in the end (delta: -41.2 MB). Peak memory consumption was 52.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:36,571 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 32.5 MB. Free memory was 9.1 MB in the beginning and 9.0 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. [2020-10-20 06:25:36,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.50 ms. Allocated memory was 34.6 MB in the beginning and 42.5 MB in the end (delta: 7.9 MB). Free memory was 14.6 MB in the beginning and 25.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:36,573 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.35 ms. Allocated memory is still 42.5 MB. Free memory was 25.1 MB in the beginning and 23.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:36,573 INFO L168 Benchmark]: Boogie Preprocessor took 18.15 ms. Allocated memory is still 42.5 MB. Free memory was 23.6 MB in the beginning and 22.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:36,574 INFO L168 Benchmark]: RCFGBuilder took 301.95 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 22.3 MB in the beginning and 24.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:36,574 INFO L168 Benchmark]: TraceAbstraction took 11810.65 ms. Allocated memory was 45.1 MB in the beginning and 77.1 MB in the end (delta: 32.0 MB). Free memory was 23.7 MB in the beginning and 6.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 49.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:25:36,575 INFO L168 Benchmark]: Witness Printer took 73.76 ms. Allocated memory was 77.1 MB in the beginning and 77.6 MB in the end (delta: 524.3 kB). Free memory was 6.1 MB in the beginning and 56.7 MB in the end (delta: -50.6 MB). Peak memory consumption was 251.0 kB. Max. memory is 14.3 GB. [2020-10-20 06:25:36,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 32.5 MB. Free memory was 9.1 MB in the beginning and 9.0 MB in the end (delta: 43.9 kB). Peak memory consumption was 43.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 379.50 ms. Allocated memory was 34.6 MB in the beginning and 42.5 MB in the end (delta: 7.9 MB). Free memory was 14.6 MB in the beginning and 25.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 28.35 ms. Allocated memory is still 42.5 MB. Free memory was 25.1 MB in the beginning and 23.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 18.15 ms. Allocated memory is still 42.5 MB. Free memory was 23.6 MB in the beginning and 22.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 301.95 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 22.3 MB in the beginning and 24.1 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 11810.65 ms. Allocated memory was 45.1 MB in the beginning and 77.1 MB in the end (delta: 32.0 MB). Free memory was 23.7 MB in the beginning and 6.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 49.9 MB. Max. memory is 14.3 GB. * Witness Printer took 73.76 ms. Allocated memory was 77.1 MB in the beginning and 77.6 MB in the end (delta: 524.3 kB). Free memory was 6.1 MB in the beginning and 56.7 MB in the end (delta: -50.6 MB). Peak memory consumption was 251.0 kB. Max. memory is 14.3 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: 8.8s, OverallIterations: 20, TraceHistogramMax: 4, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 289 SDtfs, 916 SDslu, 763 SDs, 0 SdLazy, 1509 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 510 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.9s 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: 0.1s 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, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s 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...