./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.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/NestedRecursion_1b.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 cb528549fa76ae8087cf7043645dfa20323a0116 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:22:06,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:22:06,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:22:06,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:22:06,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:22:06,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:22:06,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:22:06,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:22:06,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:22:06,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:22:06,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:22:06,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:22:06,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:22:06,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:22:06,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:22:06,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:22:06,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:22:06,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:22:06,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:22:06,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:22:06,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:22:06,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:22:06,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:22:06,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:22:06,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:22:06,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:22:06,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:22:06,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:22:06,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:22:06,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:22:06,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:22:06,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:22:06,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:22:06,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:22:06,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:22:06,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:22:06,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:22:06,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:22:06,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:22:06,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:22:06,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:22:06,083 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:22:06,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:22:06,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:22:06,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:22:06,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:22:06,121 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:22:06,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:22:06,121 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:22:06,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:22:06,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:22:06,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:22:06,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:22:06,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:22:06,124 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:22:06,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:22:06,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:22:06,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:22:06,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:22:06,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:22:06,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:22:06,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:22:06,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:22:06,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:22:06,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:22:06,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:22:06,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:22:06,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:22:06,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:22:06,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:22:06,129 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 -> cb528549fa76ae8087cf7043645dfa20323a0116 [2020-10-20 06:22:06,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:22:06,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:22:06,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:22:06,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:22:06,393 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:22:06,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2020-10-20 06:22:06,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b850655b1/c8cf180bbad744e58c216121b86ff0ee/FLAGffb37738b [2020-10-20 06:22:06,946 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:22:06,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2020-10-20 06:22:06,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b850655b1/c8cf180bbad744e58c216121b86ff0ee/FLAGffb37738b [2020-10-20 06:22:07,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b850655b1/c8cf180bbad744e58c216121b86ff0ee [2020-10-20 06:22:07,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:22:07,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:22:07,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:07,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:22:07,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:22:07,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:07" (1/1) ... [2020-10-20 06:22:07,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1d76c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07, skipping insertion in model container [2020-10-20 06:22:07,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:22:07" (1/1) ... [2020-10-20 06:22:07,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:22:07,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:22:07,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:07,628 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:22:07,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:22:07,674 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:22:07,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07 WrapperNode [2020-10-20 06:22:07,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:22:07,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:07,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:22:07,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:22:07,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07" (1/1) ... [2020-10-20 06:22:07,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07" (1/1) ... [2020-10-20 06:22:07,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:22:07,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:22:07,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:22:07,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:22:07,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07" (1/1) ... [2020-10-20 06:22:07,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07" (1/1) ... [2020-10-20 06:22:07,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07" (1/1) ... [2020-10-20 06:22:07,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07" (1/1) ... [2020-10-20 06:22:07,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07" (1/1) ... [2020-10-20 06:22:07,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07" (1/1) ... [2020-10-20 06:22:07,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07" (1/1) ... [2020-10-20 06:22:07,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:22:07,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:22:07,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:22:07,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:22:07,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07" (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 06:22:07,793 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2020-10-20 06:22:07,794 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2020-10-20 06:22:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2020-10-20 06:22:07,794 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2020-10-20 06:22:07,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:22:07,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:22:08,018 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:22:08,019 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 06:22:08,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:08 BoogieIcfgContainer [2020-10-20 06:22:08,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:22:08,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:22:08,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:22:08,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:22:08,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:22:07" (1/3) ... [2020-10-20 06:22:08,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174fe278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:08, skipping insertion in model container [2020-10-20 06:22:08,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:22:07" (2/3) ... [2020-10-20 06:22:08,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174fe278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:22:08, skipping insertion in model container [2020-10-20 06:22:08,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:08" (3/3) ... [2020-10-20 06:22:08,031 INFO L111 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1b.c [2020-10-20 06:22:08,045 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:22:08,057 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-10-20 06:22:08,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-20 06:22:08,109 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:22:08,109 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:22:08,110 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:22:08,110 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:22:08,110 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:22:08,110 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:22:08,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:22:08,111 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:22:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-20 06:22:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:22:08,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:08,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:22:08,143 INFO L429 AbstractCegarLoop]: === Iteration 1 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:08,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:08,149 INFO L82 PathProgramCache]: Analyzing trace with hash 70122184, now seen corresponding path program 1 times [2020-10-20 06:22:08,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:08,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884010743] [2020-10-20 06:22:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,332 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 06:22:08,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884010743] [2020-10-20 06:22:08,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:08,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:22:08,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611646404] [2020-10-20 06:22:08,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:22:08,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:08,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:22:08,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:22:08,361 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2020-10-20 06:22:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:08,481 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-10-20 06:22:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:22:08,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-10-20 06:22:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:08,493 INFO L225 Difference]: With dead ends: 62 [2020-10-20 06:22:08,493 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 06:22:08,496 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 06:22:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 06:22:08,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2020-10-20 06:22:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 06:22:08,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-10-20 06:22:08,548 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2020-10-20 06:22:08,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:08,549 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-10-20 06:22:08,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:22:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-10-20 06:22:08,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:22:08,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:08,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:22:08,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:22:08,551 INFO L429 AbstractCegarLoop]: === Iteration 2 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:08,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:08,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2121179530, now seen corresponding path program 1 times [2020-10-20 06:22:08,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:08,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808552278] [2020-10-20 06:22:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,575 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 06:22:08,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808552278] [2020-10-20 06:22:08,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:08,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:22:08,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377386826] [2020-10-20 06:22:08,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:08,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:08,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:08,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:08,579 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2020-10-20 06:22:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:08,598 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-20 06:22:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:08,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 06:22:08,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:08,600 INFO L225 Difference]: With dead ends: 52 [2020-10-20 06:22:08,600 INFO L226 Difference]: Without dead ends: 51 [2020-10-20 06:22:08,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:08,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-20 06:22:08,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-20 06:22:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 06:22:08,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2020-10-20 06:22:08,615 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 6 [2020-10-20 06:22:08,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:08,615 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2020-10-20 06:22:08,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2020-10-20 06:22:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:22:08,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:08,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:08,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:22:08,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:08,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:08,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2074588191, now seen corresponding path program 1 times [2020-10-20 06:22:08,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:08,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238312363] [2020-10-20 06:22:08,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,675 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 06:22:08,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238312363] [2020-10-20 06:22:08,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:08,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:22:08,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651587397] [2020-10-20 06:22:08,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:22:08,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:08,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:22:08,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:22:08,678 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 7 states. [2020-10-20 06:22:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:08,844 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2020-10-20 06:22:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:22:08,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-20 06:22:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:08,847 INFO L225 Difference]: With dead ends: 77 [2020-10-20 06:22:08,848 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 06:22:08,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:22:08,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 06:22:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2020-10-20 06:22:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-20 06:22:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2020-10-20 06:22:08,868 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 10 [2020-10-20 06:22:08,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:08,868 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2020-10-20 06:22:08,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:22:08,869 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2020-10-20 06:22:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:22:08,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:08,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:08,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:22:08,871 INFO L429 AbstractCegarLoop]: === Iteration 4 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:08,871 INFO L82 PathProgramCache]: Analyzing trace with hash 112275557, now seen corresponding path program 1 times [2020-10-20 06:22:08,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:08,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626463618] [2020-10-20 06:22:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,894 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 06:22:08,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626463618] [2020-10-20 06:22:08,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:08,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:22:08,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751349950] [2020-10-20 06:22:08,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:08,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:08,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:08,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:08,897 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand 3 states. [2020-10-20 06:22:08,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:08,924 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-10-20 06:22:08,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:08,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-20 06:22:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:08,926 INFO L225 Difference]: With dead ends: 69 [2020-10-20 06:22:08,926 INFO L226 Difference]: Without dead ends: 68 [2020-10-20 06:22:08,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-20 06:22:08,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-10-20 06:22:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-20 06:22:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 79 transitions. [2020-10-20 06:22:08,941 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 79 transitions. Word has length 11 [2020-10-20 06:22:08,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:08,941 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 79 transitions. [2020-10-20 06:22:08,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:08,942 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 79 transitions. [2020-10-20 06:22:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:22:08,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:08,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:08,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:22:08,943 INFO L429 AbstractCegarLoop]: === Iteration 5 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:08,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:08,944 INFO L82 PathProgramCache]: Analyzing trace with hash -2048531074, now seen corresponding path program 1 times [2020-10-20 06:22:08,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:08,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414382375] [2020-10-20 06:22:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,039 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 06:22:09,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414382375] [2020-10-20 06:22:09,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:09,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:22:09,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608580000] [2020-10-20 06:22:09,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:22:09,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:22:09,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:09,042 INFO L87 Difference]: Start difference. First operand 64 states and 79 transitions. Second operand 6 states. [2020-10-20 06:22:09,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:09,105 INFO L93 Difference]: Finished difference Result 125 states and 160 transitions. [2020-10-20 06:22:09,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:22:09,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 06:22:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:09,107 INFO L225 Difference]: With dead ends: 125 [2020-10-20 06:22:09,108 INFO L226 Difference]: Without dead ends: 86 [2020-10-20 06:22:09,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:22:09,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-20 06:22:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2020-10-20 06:22:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 06:22:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-10-20 06:22:09,125 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 16 [2020-10-20 06:22:09,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:09,125 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-10-20 06:22:09,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:22:09,126 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-10-20 06:22:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:22:09,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:09,127 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:09,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:22:09,128 INFO L429 AbstractCegarLoop]: === Iteration 6 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:09,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:09,128 INFO L82 PathProgramCache]: Analyzing trace with hash -57180086, now seen corresponding path program 1 times [2020-10-20 06:22:09,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:09,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394873334] [2020-10-20 06:22:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-20 06:22:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:22:09,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394873334] [2020-10-20 06:22:09,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:09,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:22:09,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187355317] [2020-10-20 06:22:09,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:09,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:09,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:09,170 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 3 states. [2020-10-20 06:22:09,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:09,187 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2020-10-20 06:22:09,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:09,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-20 06:22:09,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:09,189 INFO L225 Difference]: With dead ends: 76 [2020-10-20 06:22:09,189 INFO L226 Difference]: Without dead ends: 75 [2020-10-20 06:22:09,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:09,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-20 06:22:09,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-20 06:22:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-20 06:22:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2020-10-20 06:22:09,203 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 18 [2020-10-20 06:22:09,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:09,204 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2020-10-20 06:22:09,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:09,204 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2020-10-20 06:22:09,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:22:09,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:09,205 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:09,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:22:09,206 INFO L429 AbstractCegarLoop]: === Iteration 7 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:09,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:09,206 INFO L82 PathProgramCache]: Analyzing trace with hash -599425808, now seen corresponding path program 1 times [2020-10-20 06:22:09,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:09,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818011340] [2020-10-20 06:22:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:22:09,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818011340] [2020-10-20 06:22:09,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:09,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:22:09,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210411458] [2020-10-20 06:22:09,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:09,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:09,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:09,238 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand 3 states. [2020-10-20 06:22:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:09,250 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2020-10-20 06:22:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:09,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-20 06:22:09,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:09,252 INFO L225 Difference]: With dead ends: 75 [2020-10-20 06:22:09,252 INFO L226 Difference]: Without dead ends: 74 [2020-10-20 06:22:09,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-20 06:22:09,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-20 06:22:09,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-20 06:22:09,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-10-20 06:22:09,264 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 19 [2020-10-20 06:22:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:09,265 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-10-20 06:22:09,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:09,265 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-10-20 06:22:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:22:09,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:09,266 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:09,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:22:09,266 INFO L429 AbstractCegarLoop]: === Iteration 8 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:09,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1772582622, now seen corresponding path program 1 times [2020-10-20 06:22:09,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:09,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769769608] [2020-10-20 06:22:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-20 06:22:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:22:09,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769769608] [2020-10-20 06:22:09,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:09,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:22:09,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088081505] [2020-10-20 06:22:09,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:22:09,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:22:09,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:22:09,302 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 4 states. [2020-10-20 06:22:09,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:09,325 INFO L93 Difference]: Finished difference Result 95 states and 126 transitions. [2020-10-20 06:22:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:22:09,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-20 06:22:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:09,327 INFO L225 Difference]: With dead ends: 95 [2020-10-20 06:22:09,328 INFO L226 Difference]: Without dead ends: 94 [2020-10-20 06:22:09,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:22:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-20 06:22:09,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2020-10-20 06:22:09,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 06:22:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2020-10-20 06:22:09,342 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 19 [2020-10-20 06:22:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:09,350 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2020-10-20 06:22:09,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:22:09,351 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2020-10-20 06:22:09,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:22:09,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:09,352 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:09,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:22:09,352 INFO L429 AbstractCegarLoop]: === Iteration 9 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:09,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:09,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1402330794, now seen corresponding path program 1 times [2020-10-20 06:22:09,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:09,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143052787] [2020-10-20 06:22:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:22:09,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143052787] [2020-10-20 06:22:09,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:09,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:22:09,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146823619] [2020-10-20 06:22:09,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:22:09,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:22:09,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:22:09,414 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 4 states. [2020-10-20 06:22:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:09,432 INFO L93 Difference]: Finished difference Result 89 states and 110 transitions. [2020-10-20 06:22:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:22:09,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-20 06:22:09,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:09,434 INFO L225 Difference]: With dead ends: 89 [2020-10-20 06:22:09,435 INFO L226 Difference]: Without dead ends: 83 [2020-10-20 06:22:09,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:22:09,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-20 06:22:09,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-20 06:22:09,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-20 06:22:09,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2020-10-20 06:22:09,447 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 20 [2020-10-20 06:22:09,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:09,448 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2020-10-20 06:22:09,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:22:09,448 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2020-10-20 06:22:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 06:22:09,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:09,450 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:09,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:22:09,450 INFO L429 AbstractCegarLoop]: === Iteration 10 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:09,451 INFO L82 PathProgramCache]: Analyzing trace with hash 921726737, now seen corresponding path program 1 times [2020-10-20 06:22:09,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:09,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758681571] [2020-10-20 06:22:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-20 06:22:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:22:09,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758681571] [2020-10-20 06:22:09,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:09,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:22:09,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198223934] [2020-10-20 06:22:09,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:22:09,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:22:09,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:09,523 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand 6 states. [2020-10-20 06:22:09,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:09,613 INFO L93 Difference]: Finished difference Result 167 states and 222 transitions. [2020-10-20 06:22:09,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:22:09,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-20 06:22:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:09,615 INFO L225 Difference]: With dead ends: 167 [2020-10-20 06:22:09,615 INFO L226 Difference]: Without dead ends: 101 [2020-10-20 06:22:09,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:22:09,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-20 06:22:09,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2020-10-20 06:22:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-20 06:22:09,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2020-10-20 06:22:09,629 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 23 [2020-10-20 06:22:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:09,629 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2020-10-20 06:22:09,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:22:09,630 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2020-10-20 06:22:09,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 06:22:09,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:09,631 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:09,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 06:22:09,631 INFO L429 AbstractCegarLoop]: === Iteration 11 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:09,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:09,632 INFO L82 PathProgramCache]: Analyzing trace with hash 970950199, now seen corresponding path program 1 times [2020-10-20 06:22:09,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:09,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443345529] [2020-10-20 06:22:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-20 06:22:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-20 06:22:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-20 06:22:09,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443345529] [2020-10-20 06:22:09,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:09,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:22:09,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128602155] [2020-10-20 06:22:09,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:22:09,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:22:09,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:09,692 INFO L87 Difference]: Start difference. First operand 89 states and 108 transitions. Second operand 6 states. [2020-10-20 06:22:09,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:09,754 INFO L93 Difference]: Finished difference Result 176 states and 226 transitions. [2020-10-20 06:22:09,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:22:09,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-20 06:22:09,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:09,756 INFO L225 Difference]: With dead ends: 176 [2020-10-20 06:22:09,757 INFO L226 Difference]: Without dead ends: 105 [2020-10-20 06:22:09,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:22:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-20 06:22:09,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2020-10-20 06:22:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-20 06:22:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2020-10-20 06:22:09,768 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 34 [2020-10-20 06:22:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:09,768 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2020-10-20 06:22:09,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:22:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2020-10-20 06:22:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 06:22:09,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:09,776 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:09,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 06:22:09,776 INFO L429 AbstractCegarLoop]: === Iteration 12 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:09,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1027694963, now seen corresponding path program 1 times [2020-10-20 06:22:09,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:09,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121625830] [2020-10-20 06:22:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-20 06:22:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-20 06:22:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-20 06:22:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-20 06:22:09,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121625830] [2020-10-20 06:22:09,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:09,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:22:09,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784387206] [2020-10-20 06:22:09,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:22:09,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:22:09,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:22:09,820 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand 4 states. [2020-10-20 06:22:09,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:09,841 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2020-10-20 06:22:09,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:22:09,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-20 06:22:09,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:09,844 INFO L225 Difference]: With dead ends: 104 [2020-10-20 06:22:09,844 INFO L226 Difference]: Without dead ends: 103 [2020-10-20 06:22:09,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:22:09,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-20 06:22:09,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-10-20 06:22:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-20 06:22:09,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2020-10-20 06:22:09,854 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 37 [2020-10-20 06:22:09,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:09,855 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2020-10-20 06:22:09,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:22:09,855 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2020-10-20 06:22:09,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-20 06:22:09,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:09,857 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:09,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 06:22:09,857 INFO L429 AbstractCegarLoop]: === Iteration 13 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:09,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:09,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1793772729, now seen corresponding path program 1 times [2020-10-20 06:22:09,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:09,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390481230] [2020-10-20 06:22:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-20 06:22:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-20 06:22:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-20 06:22:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-20 06:22:09,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390481230] [2020-10-20 06:22:09,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:09,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:22:09,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034837663] [2020-10-20 06:22:09,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:22:09,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:22:09,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:09,889 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand 3 states. [2020-10-20 06:22:09,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:09,898 INFO L93 Difference]: Finished difference Result 101 states and 121 transitions. [2020-10-20 06:22:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:22:09,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-10-20 06:22:09,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:09,900 INFO L225 Difference]: With dead ends: 101 [2020-10-20 06:22:09,900 INFO L226 Difference]: Without dead ends: 100 [2020-10-20 06:22:09,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:22:09,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-20 06:22:09,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-20 06:22:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-20 06:22:09,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2020-10-20 06:22:09,909 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 38 [2020-10-20 06:22:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:09,909 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2020-10-20 06:22:09,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:22:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2020-10-20 06:22:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-20 06:22:09,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:09,911 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:09,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 06:22:09,911 INFO L429 AbstractCegarLoop]: === Iteration 14 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:09,912 INFO L82 PathProgramCache]: Analyzing trace with hash -747989016, now seen corresponding path program 1 times [2020-10-20 06:22:09,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:09,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719016911] [2020-10-20 06:22:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-20 06:22:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:22:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-20 06:22:10,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719016911] [2020-10-20 06:22:10,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:10,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:22:10,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817507672] [2020-10-20 06:22:10,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:22:10,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:10,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:22:10,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:10,012 INFO L87 Difference]: Start difference. First operand 100 states and 119 transitions. Second operand 6 states. [2020-10-20 06:22:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:10,057 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2020-10-20 06:22:10,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:22:10,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-10-20 06:22:10,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:10,059 INFO L225 Difference]: With dead ends: 110 [2020-10-20 06:22:10,059 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 06:22:10,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:22:10,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 06:22:10,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2020-10-20 06:22:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-20 06:22:10,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2020-10-20 06:22:10,068 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 43 [2020-10-20 06:22:10,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:10,068 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2020-10-20 06:22:10,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:22:10,069 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2020-10-20 06:22:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-20 06:22:10,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:10,070 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:10,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-20 06:22:10,071 INFO L429 AbstractCegarLoop]: === Iteration 15 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:10,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1488967228, now seen corresponding path program 1 times [2020-10-20 06:22:10,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:10,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670258549] [2020-10-20 06:22:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:22:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-20 06:22:10,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670258549] [2020-10-20 06:22:10,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245111322] [2020-10-20 06:22:10,158 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 06:22:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:22:10,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-20 06:22:10,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:22:10,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-10-20 06:22:10,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040041455] [2020-10-20 06:22:10,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:22:10,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:10,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:22:10,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:22:10,330 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand 7 states. [2020-10-20 06:22:10,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:10,426 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2020-10-20 06:22:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:22:10,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-20 06:22:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:10,429 INFO L225 Difference]: With dead ends: 100 [2020-10-20 06:22:10,429 INFO L226 Difference]: Without dead ends: 99 [2020-10-20 06:22:10,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:22:10,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-20 06:22:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-20 06:22:10,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-20 06:22:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2020-10-20 06:22:10,438 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 40 [2020-10-20 06:22:10,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:10,438 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2020-10-20 06:22:10,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:22:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2020-10-20 06:22:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-20 06:22:10,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:10,440 INFO L422 BasicCegarLoop]: trace histogram [7, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:10,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 06:22:10,654 INFO L429 AbstractCegarLoop]: === Iteration 16 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:10,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:10,654 INFO L82 PathProgramCache]: Analyzing trace with hash 822906818, now seen corresponding path program 1 times [2020-10-20 06:22:10,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:10,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327356048] [2020-10-20 06:22:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-20 06:22:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:22:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-20 06:22:10,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327356048] [2020-10-20 06:22:10,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704687822] [2020-10-20 06:22:10,731 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 06:22:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:10,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:22:10,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-20 06:22:10,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:22:10,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-10-20 06:22:10,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838149943] [2020-10-20 06:22:10,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:22:10,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:10,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:22:10,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:22:10,878 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand 7 states. [2020-10-20 06:22:11,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:11,079 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2020-10-20 06:22:11,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:22:11,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-20 06:22:11,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:11,081 INFO L225 Difference]: With dead ends: 126 [2020-10-20 06:22:11,081 INFO L226 Difference]: Without dead ends: 125 [2020-10-20 06:22:11,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-20 06:22:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-20 06:22:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2020-10-20 06:22:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-20 06:22:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 150 transitions. [2020-10-20 06:22:11,100 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 150 transitions. Word has length 52 [2020-10-20 06:22:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:11,101 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 150 transitions. [2020-10-20 06:22:11,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:22:11,102 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 150 transitions. [2020-10-20 06:22:11,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-20 06:22:11,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:11,104 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:11,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 06:22:11,320 INFO L429 AbstractCegarLoop]: === Iteration 17 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:11,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:11,321 INFO L82 PathProgramCache]: Analyzing trace with hash 695736933, now seen corresponding path program 1 times [2020-10-20 06:22:11,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:11,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063086944] [2020-10-20 06:22:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:22:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-20 06:22:11,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063086944] [2020-10-20 06:22:11,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812649861] [2020-10-20 06:22:11,408 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 06:22:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:22:11,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-20 06:22:11,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:22:11,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2020-10-20 06:22:11,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054433559] [2020-10-20 06:22:11,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:22:11,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:11,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:22:11,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:22:11,529 INFO L87 Difference]: Start difference. First operand 124 states and 150 transitions. Second operand 5 states. [2020-10-20 06:22:11,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:11,600 INFO L93 Difference]: Finished difference Result 152 states and 185 transitions. [2020-10-20 06:22:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:22:11,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-20 06:22:11,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:11,602 INFO L225 Difference]: With dead ends: 152 [2020-10-20 06:22:11,602 INFO L226 Difference]: Without dead ends: 151 [2020-10-20 06:22:11,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:22:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-20 06:22:11,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2020-10-20 06:22:11,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-20 06:22:11,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 184 transitions. [2020-10-20 06:22:11,620 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 184 transitions. Word has length 45 [2020-10-20 06:22:11,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:11,620 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 184 transitions. [2020-10-20 06:22:11,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:22:11,621 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 184 transitions. [2020-10-20 06:22:11,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-20 06:22:11,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:11,623 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:11,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 06:22:11,837 INFO L429 AbstractCegarLoop]: === Iteration 18 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:11,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1252678887, now seen corresponding path program 1 times [2020-10-20 06:22:11,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:11,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018107128] [2020-10-20 06:22:11,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:22:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-20 06:22:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 06:22:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-20 06:22:11,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018107128] [2020-10-20 06:22:11,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144435681] [2020-10-20 06:22:11,913 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 06:22:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:11,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:22:11,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-20 06:22:11,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:11,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-20 06:22:11,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335118179] [2020-10-20 06:22:11,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:22:11,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:11,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:22:11,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:11,984 INFO L87 Difference]: Start difference. First operand 150 states and 184 transitions. Second operand 6 states. [2020-10-20 06:22:12,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:12,015 INFO L93 Difference]: Finished difference Result 159 states and 194 transitions. [2020-10-20 06:22:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:22:12,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-20 06:22:12,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:12,017 INFO L225 Difference]: With dead ends: 159 [2020-10-20 06:22:12,017 INFO L226 Difference]: Without dead ends: 155 [2020-10-20 06:22:12,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:22:12,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-20 06:22:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-10-20 06:22:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-20 06:22:12,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 189 transitions. [2020-10-20 06:22:12,028 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 189 transitions. Word has length 60 [2020-10-20 06:22:12,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:12,028 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 189 transitions. [2020-10-20 06:22:12,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:22:12,029 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 189 transitions. [2020-10-20 06:22:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-20 06:22:12,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:12,030 INFO L422 BasicCegarLoop]: trace histogram [10, 8, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:12,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 06:22:12,246 INFO L429 AbstractCegarLoop]: === Iteration 19 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:12,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1438531096, now seen corresponding path program 2 times [2020-10-20 06:22:12,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:12,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420896122] [2020-10-20 06:22:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-20 06:22:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:22:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-20 06:22:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:22:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 64 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-20 06:22:12,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420896122] [2020-10-20 06:22:12,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852957592] [2020-10-20 06:22:12,382 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 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 06:22:12,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:22:12,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:12,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:22:12,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 64 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-20 06:22:12,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:12,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-20 06:22:12,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196551361] [2020-10-20 06:22:12,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:22:12,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:12,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:22:12,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:22:12,489 INFO L87 Difference]: Start difference. First operand 155 states and 189 transitions. Second operand 9 states. [2020-10-20 06:22:12,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:12,627 INFO L93 Difference]: Finished difference Result 252 states and 311 transitions. [2020-10-20 06:22:12,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:22:12,628 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-20 06:22:12,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:12,629 INFO L225 Difference]: With dead ends: 252 [2020-10-20 06:22:12,630 INFO L226 Difference]: Without dead ends: 97 [2020-10-20 06:22:12,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:22:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-20 06:22:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2020-10-20 06:22:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-20 06:22:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-10-20 06:22:12,638 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 77 [2020-10-20 06:22:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:12,639 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-10-20 06:22:12,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:22:12,639 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-10-20 06:22:12,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-20 06:22:12,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:12,641 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2020-10-20 06:22:12,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:12,856 INFO L429 AbstractCegarLoop]: === Iteration 20 === [rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:12,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:12,857 INFO L82 PathProgramCache]: Analyzing trace with hash -151262980, now seen corresponding path program 2 times [2020-10-20 06:22:12,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:12,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669541795] [2020-10-20 06:22:12,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 06:22:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:22:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-20 06:22:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:12,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:13,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:13,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:13,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:22:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 06:22:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:13,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:22:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:13,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-20 06:22:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:13,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:22:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:13,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 06:22:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 48 proven. 78 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-20 06:22:13,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669541795] [2020-10-20 06:22:13,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108865193] [2020-10-20 06:22:13,064 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 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 06:22:13,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:22:13,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:13,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 06:22:13,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:13,192 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 48 proven. 78 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-20 06:22:13,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:13,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-10-20 06:22:13,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896294241] [2020-10-20 06:22:13,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:22:13,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:13,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:22:13,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:22:13,195 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 12 states. [2020-10-20 06:22:13,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:13,398 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-10-20 06:22:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:22:13,398 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 124 [2020-10-20 06:22:13,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:13,398 INFO L225 Difference]: With dead ends: 95 [2020-10-20 06:22:13,399 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:22:13,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-20 06:22:13,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:22:13,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:22:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:22:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:22:13,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 124 [2020-10-20 06:22:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:13,400 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:22:13,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:22:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:22:13,401 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:22:13,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:13,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:22:14,069 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 19 [2020-10-20 06:22:14,250 INFO L274 CegarLoopResult]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,250 INFO L274 CegarLoopResult]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2020-10-20 06:22:14,250 INFO L274 CegarLoopResult]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,250 INFO L274 CegarLoopResult]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2020-10-20 06:22:14,250 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,251 INFO L277 CegarLoopResult]: At program point rec1ENTRY(lines 11 15) the Hoare annotation is: true [2020-10-20 06:22:14,251 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,251 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-10-20 06:22:14,251 INFO L270 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (and (not (<= |rec1_#in~i| 2147483646)) (or (not (<= |rec1_#in~i| 2147483647)) (= |rec1_#in~i| rec1_~i))) [2020-10-20 06:22:14,251 INFO L274 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,251 INFO L274 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,252 INFO L274 CegarLoopResult]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,252 INFO L274 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,252 INFO L270 CegarLoopResult]: At program point L14-6(line 14) the Hoare annotation is: (and (not (<= |rec1_#in~i| 2147483646)) (or (not (<= |rec1_#in~i| 2147483647)) (and (= |rec1_#in~i| rec1_~i) (<= |rec1_#t~ret0| 1)))) [2020-10-20 06:22:14,253 INFO L274 CegarLoopResult]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,253 INFO L274 CegarLoopResult]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,253 INFO L274 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,253 INFO L274 CegarLoopResult]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,253 INFO L270 CegarLoopResult]: At program point L14-8(line 14) the Hoare annotation is: (and (not (<= |rec1_#in~i| 2147483646)) (or (not (<= |rec1_#in~i| 2147483647)) (and (= |rec1_#in~i| rec1_~i) (<= |rec1_#t~ret0| 1) (<= |rec1_#t~ret1| 0)))) [2020-10-20 06:22:14,254 INFO L274 CegarLoopResult]: For program point L14-9(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,254 INFO L274 CegarLoopResult]: For program point L14-10(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,254 INFO L274 CegarLoopResult]: For program point L14-11(line 14) no Hoare annotation was computed. [2020-10-20 06:22:14,254 INFO L274 CegarLoopResult]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:22:14,254 INFO L274 CegarLoopResult]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2020-10-20 06:22:14,255 INFO L274 CegarLoopResult]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2020-10-20 06:22:14,255 INFO L274 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-10-20 06:22:14,255 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-20 06:22:14,255 INFO L274 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-10-20 06:22:14,255 INFO L270 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (not (<= |rec2_#in~j| 0)) (or (not (<= |rec2_#in~j| 2147483647)) (= rec2_~j |rec2_#in~j|))) [2020-10-20 06:22:14,256 INFO L274 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-10-20 06:22:14,256 INFO L270 CegarLoopResult]: At program point L20-4(line 20) the Hoare annotation is: (let ((.cse0 (not (<= |rec2_#in~j| 2147483647)))) (and (or (and (<= |rec2_#t~ret3| 1) (<= 2 |rec2_#in~j|)) .cse0 (and (<= 1 rec2_~j) (<= |rec2_#t~ret3| 0))) (or .cse0 (= rec2_~j |rec2_#in~j|)))) [2020-10-20 06:22:14,256 INFO L274 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-10-20 06:22:14,256 INFO L274 CegarLoopResult]: For program point L20-6(line 20) no Hoare annotation was computed. [2020-10-20 06:22:14,256 INFO L274 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-10-20 06:22:14,257 INFO L277 CegarLoopResult]: At program point rec2ENTRY(lines 17 21) the Hoare annotation is: true [2020-10-20 06:22:14,257 INFO L274 CegarLoopResult]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:22:14,257 INFO L274 CegarLoopResult]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:22:14,257 INFO L274 CegarLoopResult]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2020-10-20 06:22:14,257 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:22:14,258 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:22:14,258 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:22:14,258 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-10-20 06:22:14,258 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-10-20 06:22:14,258 INFO L274 CegarLoopResult]: For program point L23(lines 23 26) no Hoare annotation was computed. [2020-10-20 06:22:14,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:22:14 BoogieIcfgContainer [2020-10-20 06:22:14,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:22:14,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:22:14,265 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:22:14,265 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:22:14,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:22:08" (3/4) ... [2020-10-20 06:22:14,270 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:22:14,277 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2020-10-20 06:22:14,278 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2020-10-20 06:22:14,284 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 06:22:14,284 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:22:14,334 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:22:14,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:22:14,336 INFO L168 Benchmark]: Toolchain (without parser) took 7012.79 ms. Allocated memory was 35.1 MB in the beginning and 75.5 MB in the end (delta: 40.4 MB). Free memory was 13.2 MB in the beginning and 29.2 MB in the end (delta: -16.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,337 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 33.6 MB. Free memory is still 7.8 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:22:14,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.92 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.3 MB in the beginning and 25.8 MB in the end (delta: -13.5 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.92 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,338 INFO L168 Benchmark]: Boogie Preprocessor took 19.29 ms. Allocated memory is still 44.0 MB. Free memory was 24.4 MB in the beginning and 23.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,339 INFO L168 Benchmark]: RCFGBuilder took 298.51 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 23.1 MB in the beginning and 21.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,339 INFO L168 Benchmark]: TraceAbstraction took 6242.09 ms. Allocated memory was 45.6 MB in the beginning and 75.5 MB in the end (delta: 29.9 MB). Free memory was 21.1 MB in the beginning and 33.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 39.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,340 INFO L168 Benchmark]: Witness Printer took 69.48 ms. Allocated memory is still 75.5 MB. Free memory was 33.0 MB in the beginning and 29.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 33.6 MB. Free memory is still 7.8 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 345.92 ms. Allocated memory was 35.1 MB in the beginning and 44.0 MB in the end (delta: 8.9 MB). Free memory was 12.3 MB in the beginning and 25.8 MB in the end (delta: -13.5 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 26.92 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 19.29 ms. Allocated memory is still 44.0 MB. Free memory was 24.4 MB in the beginning and 23.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 298.51 ms. Allocated memory was 44.0 MB in the beginning and 45.6 MB in the end (delta: 1.6 MB). Free memory was 23.1 MB in the beginning and 21.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6242.09 ms. Allocated memory was 45.6 MB in the beginning and 75.5 MB in the end (delta: 29.9 MB). Free memory was 21.1 MB in the beginning and 33.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 39.1 MB. Max. memory is 14.3 GB. * Witness Printer took 69.48 ms. Allocated memory is still 75.5 MB. Free memory was 33.0 MB in the beginning and 29.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: 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 - PositiveResult [Line: 20]: 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 - 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 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 20, TraceHistogramMax: 12, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 762 SDtfs, 287 SDslu, 1938 SDs, 0 SdLazy, 734 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 643 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 93 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 238 PreInvPairs, 260 NumberOfFragments, 96 HoareAnnotationTreeSize, 238 FomulaSimplifications, 877 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 8 FomulaSimplificationsInter, 538 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1095 NumberOfCodeBlocks, 1095 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1069 ConstructedInterpolants, 0 QuantifiedInterpolants, 106561 SizeOfPredicates, 8 NumberOfNonLiveVariables, 820 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 26 InterpolantComputations, 17 PerfectInterpolantSequences, 1337/1565 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...