./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.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/Arrays01-EquivalentConstantIndices-1.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 cf39454d83b4ec00341bd0b620b0fa6b2321ce21 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:21:50,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:21:50,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:21:50,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:21:50,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:21:50,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:21:50,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:21:50,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:21:50,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:21:50,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:21:50,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:21:50,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:21:50,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:21:50,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:21:51,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:21:51,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:21:51,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:21:51,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:21:51,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:21:51,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:21:51,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:21:51,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:21:51,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:21:51,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:21:51,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:21:51,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:21:51,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:21:51,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:21:51,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:21:51,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:21:51,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:21:51,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:21:51,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:21:51,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:21:51,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:21:51,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:21:51,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:21:51,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:21:51,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:21:51,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:21:51,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:21:51,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:21:51,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:21:51,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:21:51,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:21:51,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:21:51,097 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:21:51,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:21:51,098 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:21:51,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:21:51,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:21:51,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:21:51,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:21:51,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:21:51,100 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:21:51,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:21:51,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:21:51,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:21:51,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:21:51,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:21:51,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:21:51,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:21:51,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:21:51,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:21:51,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:21:51,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:21:51,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:21:51,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:21:51,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:21:51,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:21:51,105 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 -> cf39454d83b4ec00341bd0b620b0fa6b2321ce21 [2020-10-20 06:21:51,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:21:51,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:21:51,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:21:51,329 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:21:51,330 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:21:51,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2020-10-20 06:21:51,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e240310ac/13e6cb89d1ee4bd4b436ed6f22e631ca/FLAG5932791ae [2020-10-20 06:21:51,861 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:21:51,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2020-10-20 06:21:51,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e240310ac/13e6cb89d1ee4bd4b436ed6f22e631ca/FLAG5932791ae [2020-10-20 06:21:52,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e240310ac/13e6cb89d1ee4bd4b436ed6f22e631ca [2020-10-20 06:21:52,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:21:52,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:21:52,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:21:52,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:21:52,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:21:52,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:21:52" (1/1) ... [2020-10-20 06:21:52,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42343282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52, skipping insertion in model container [2020-10-20 06:21:52,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:21:52" (1/1) ... [2020-10-20 06:21:52,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:21:52,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:21:52,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:21:52,525 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:21:52,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:21:52,565 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:21:52,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52 WrapperNode [2020-10-20 06:21:52,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:21:52,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:21:52,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:21:52,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:21:52,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52" (1/1) ... [2020-10-20 06:21:52,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52" (1/1) ... [2020-10-20 06:21:52,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:21:52,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:21:52,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:21:52,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:21:52,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52" (1/1) ... [2020-10-20 06:21:52,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52" (1/1) ... [2020-10-20 06:21:52,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52" (1/1) ... [2020-10-20 06:21:52,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52" (1/1) ... [2020-10-20 06:21:52,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52" (1/1) ... [2020-10-20 06:21:52,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52" (1/1) ... [2020-10-20 06:21:52,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52" (1/1) ... [2020-10-20 06:21:52,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:21:52,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:21:52,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:21:52,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:21:52,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52" (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 06:21:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:21:52,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:21:52,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:21:52,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:21:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:21:52,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:21:52,924 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:21:52,925 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 06:21:52,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:21:52 BoogieIcfgContainer [2020-10-20 06:21:52,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:21:52,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:21:52,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:21:52,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:21:52,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:21:52" (1/3) ... [2020-10-20 06:21:52,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3092e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:21:52, skipping insertion in model container [2020-10-20 06:21:52,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:21:52" (2/3) ... [2020-10-20 06:21:52,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3092e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:21:52, skipping insertion in model container [2020-10-20 06:21:52,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:21:52" (3/3) ... [2020-10-20 06:21:52,935 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2020-10-20 06:21:52,947 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:21:52,955 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 06:21:52,969 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 06:21:52,994 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:21:52,995 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:21:52,995 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:21:52,995 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:21:52,996 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:21:52,996 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:21:52,996 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:21:52,996 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:21:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-20 06:21:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:21:53,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:53,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:21:53,020 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:53,026 INFO L82 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2020-10-20 06:21:53,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:53,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030637220] [2020-10-20 06:21:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:53,243 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 06:21:53,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030637220] [2020-10-20 06:21:53,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:21:53,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:21:53,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311872148] [2020-10-20 06:21:53,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:21:53,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:53,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:21:53,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:21:53,283 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2020-10-20 06:21:53,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:53,396 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-10-20 06:21:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:21:53,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-10-20 06:21:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:53,409 INFO L225 Difference]: With dead ends: 34 [2020-10-20 06:21:53,410 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 06:21:53,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:21:53,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 06:21:53,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-20 06:21:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 06:21:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-20 06:21:53,451 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2020-10-20 06:21:53,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:53,451 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-20 06:21:53,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:21:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-20 06:21:53,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:21:53,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:53,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-10-20 06:21:53,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:21:53,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:53,455 INFO L82 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2020-10-20 06:21:53,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:53,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755058866] [2020-10-20 06:21:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:21:53,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755058866] [2020-10-20 06:21:53,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:21:53,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:21:53,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132229992] [2020-10-20 06:21:53,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:21:53,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:53,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:21:53,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:21:53,504 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-10-20 06:21:53,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:53,538 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-10-20 06:21:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:21:53,539 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 06:21:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:53,540 INFO L225 Difference]: With dead ends: 18 [2020-10-20 06:21:53,540 INFO L226 Difference]: Without dead ends: 17 [2020-10-20 06:21:53,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:21:53,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-20 06:21:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-20 06:21:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 06:21:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-20 06:21:53,552 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-10-20 06:21:53,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:53,553 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-20 06:21:53,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:21:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-20 06:21:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:21:53,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:53,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:21:53,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:21:53,555 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:53,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:53,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1607296535, now seen corresponding path program 1 times [2020-10-20 06:21:53,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:53,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884106240] [2020-10-20 06:21:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:53,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:53,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884106240] [2020-10-20 06:21:53,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840204360] [2020-10-20 06:21:53,605 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 06:21:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:53,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:21:53,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:53,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:21:53,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-20 06:21:53,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630571501] [2020-10-20 06:21:53,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:21:53,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:53,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:21:53,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:21:53,736 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2020-10-20 06:21:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:53,807 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-10-20 06:21:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:21:53,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-10-20 06:21:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:53,815 INFO L225 Difference]: With dead ends: 28 [2020-10-20 06:21:53,815 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 06:21:53,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:21:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 06:21:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-10-20 06:21:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 06:21:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-20 06:21:53,821 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2020-10-20 06:21:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:53,822 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-20 06:21:53,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:21:53,822 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-20 06:21:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:21:53,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:53,823 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-10-20 06:21:54,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 06:21:54,036 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:54,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:54,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2020-10-20 06:21:54,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:54,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630079393] [2020-10-20 06:21:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:54,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630079393] [2020-10-20 06:21:54,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265444945] [2020-10-20 06:21:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:54,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:21:54,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:54,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:21:54,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2020-10-20 06:21:54,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922956111] [2020-10-20 06:21:54,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:21:54,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:54,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:21:54,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:21:54,218 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-10-20 06:21:54,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:54,252 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-10-20 06:21:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:21:54,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 06:21:54,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:54,254 INFO L225 Difference]: With dead ends: 18 [2020-10-20 06:21:54,254 INFO L226 Difference]: Without dead ends: 17 [2020-10-20 06:21:54,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:21:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-20 06:21:54,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-20 06:21:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 06:21:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-20 06:21:54,259 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2020-10-20 06:21:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:54,260 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-20 06:21:54,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:21:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-20 06:21:54,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:21:54,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:54,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:21:54,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:54,474 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:54,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:54,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1053474021, now seen corresponding path program 2 times [2020-10-20 06:21:54,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:54,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843967084] [2020-10-20 06:21:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:54,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843967084] [2020-10-20 06:21:54,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852399002] [2020-10-20 06:21:54,543 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 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 06:21:54,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:21:54,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:21:54,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:21:54,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:54,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:21:54,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-10-20 06:21:54,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286932965] [2020-10-20 06:21:54,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:21:54,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:54,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:21:54,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:21:54,635 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2020-10-20 06:21:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:54,686 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-10-20 06:21:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:21:54,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-10-20 06:21:54,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:54,687 INFO L225 Difference]: With dead ends: 30 [2020-10-20 06:21:54,687 INFO L226 Difference]: Without dead ends: 24 [2020-10-20 06:21:54,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:21:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-20 06:21:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-10-20 06:21:54,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-20 06:21:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-20 06:21:54,693 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2020-10-20 06:21:54,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:54,693 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-20 06:21:54,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:21:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-20 06:21:54,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:21:54,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:54,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-10-20 06:21:54,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:54,908 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:54,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:54,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1100938783, now seen corresponding path program 3 times [2020-10-20 06:21:54,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:54,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673283200] [2020-10-20 06:21:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:55,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673283200] [2020-10-20 06:21:55,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958281623] [2020-10-20 06:21:55,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:21:55,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-20 06:21:55,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:21:55,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:21:55,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:55,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:21:55,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-10-20 06:21:55,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111109177] [2020-10-20 06:21:55,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:21:55,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:55,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:21:55,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:21:55,104 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2020-10-20 06:21:55,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:55,182 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-20 06:21:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:21:55,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-10-20 06:21:55,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:55,183 INFO L225 Difference]: With dead ends: 34 [2020-10-20 06:21:55,184 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 06:21:55,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:21:55,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 06:21:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-10-20 06:21:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 06:21:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-10-20 06:21:55,189 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-10-20 06:21:55,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:55,190 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-10-20 06:21:55,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:21:55,190 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-10-20 06:21:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 06:21:55,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:55,191 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-10-20 06:21:55,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:55,402 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:55,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:55,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1326737629, now seen corresponding path program 4 times [2020-10-20 06:21:55,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:55,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625813895] [2020-10-20 06:21:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:55,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625813895] [2020-10-20 06:21:55,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348207273] [2020-10-20 06:21:55,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:21:55,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:21:55,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:21:55,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:21:55,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:55,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:21:55,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-10-20 06:21:55,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973100226] [2020-10-20 06:21:55,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:21:55,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:55,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:21:55,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:21:55,629 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 13 states. [2020-10-20 06:21:55,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:55,740 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-20 06:21:55,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:21:55,741 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-10-20 06:21:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:55,741 INFO L225 Difference]: With dead ends: 38 [2020-10-20 06:21:55,742 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 06:21:55,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:21:55,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 06:21:55,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-20 06:21:55,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 06:21:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-20 06:21:55,750 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2020-10-20 06:21:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:55,750 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-20 06:21:55,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:21:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-20 06:21:55,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:21:55,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:55,753 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2020-10-20 06:21:55,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-20 06:21:55,958 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:55,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:55,959 INFO L82 PathProgramCache]: Analyzing trace with hash 108793383, now seen corresponding path program 5 times [2020-10-20 06:21:55,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:55,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217943199] [2020-10-20 06:21:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:56,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217943199] [2020-10-20 06:21:56,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428665685] [2020-10-20 06:21:56,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 06:21:56,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-10-20 06:21:56,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:21:56,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:21:56,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:56,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:21:56,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-10-20 06:21:56,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842949489] [2020-10-20 06:21:56,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 06:21:56,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:56,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 06:21:56,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:21:56,198 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 15 states. [2020-10-20 06:21:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:56,331 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-20 06:21:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:21:56,333 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 26 [2020-10-20 06:21:56,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:56,334 INFO L225 Difference]: With dead ends: 42 [2020-10-20 06:21:56,334 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 06:21:56,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-20 06:21:56,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 06:21:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-20 06:21:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 06:21:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-20 06:21:56,344 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2020-10-20 06:21:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:56,344 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-20 06:21:56,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 06:21:56,345 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-20 06:21:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:21:56,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:56,350 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2020-10-20 06:21:56,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:56,564 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:56,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1590598869, now seen corresponding path program 6 times [2020-10-20 06:21:56,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:56,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429967093] [2020-10-20 06:21:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:56,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429967093] [2020-10-20 06:21:56,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381886452] [2020-10-20 06:21:56,755 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:56,808 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-20 06:21:56,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:21:56,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 06:21:56,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:56,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:21:56,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-10-20 06:21:56,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965537173] [2020-10-20 06:21:56,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-20 06:21:56,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:56,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-20 06:21:56,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:21:56,884 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 17 states. [2020-10-20 06:21:57,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:57,017 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-10-20 06:21:57,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 06:21:57,018 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2020-10-20 06:21:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:57,019 INFO L225 Difference]: With dead ends: 46 [2020-10-20 06:21:57,019 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 06:21:57,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-20 06:21:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 06:21:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-20 06:21:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-20 06:21:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-20 06:21:57,025 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2020-10-20 06:21:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:57,025 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-20 06:21:57,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-20 06:21:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-20 06:21:57,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 06:21:57,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:57,027 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2020-10-20 06:21:57,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:57,241 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:57,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:57,241 INFO L82 PathProgramCache]: Analyzing trace with hash -2022926801, now seen corresponding path program 7 times [2020-10-20 06:21:57,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:57,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052205973] [2020-10-20 06:21:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:57,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052205973] [2020-10-20 06:21:57,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095731745] [2020-10-20 06:21:57,411 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:57,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 06:21:57,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:57,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:21:57,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-10-20 06:21:57,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876783814] [2020-10-20 06:21:57,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-20 06:21:57,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:57,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-20 06:21:57,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-20 06:21:57,526 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 19 states. [2020-10-20 06:21:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:57,695 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-10-20 06:21:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-20 06:21:57,695 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2020-10-20 06:21:57,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:57,696 INFO L225 Difference]: With dead ends: 50 [2020-10-20 06:21:57,696 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 06:21:57,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2020-10-20 06:21:57,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 06:21:57,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-10-20 06:21:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 06:21:57,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-10-20 06:21:57,702 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 34 [2020-10-20 06:21:57,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:57,703 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-10-20 06:21:57,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-20 06:21:57,703 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-10-20 06:21:57,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-20 06:21:57,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:57,704 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2020-10-20 06:21:57,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-20 06:21:57,905 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:57,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:57,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1492211917, now seen corresponding path program 8 times [2020-10-20 06:21:57,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:57,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731442633] [2020-10-20 06:21:57,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:58,115 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:58,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731442633] [2020-10-20 06:21:58,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419895775] [2020-10-20 06:21:58,116 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:58,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:21:58,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:21:58,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 06:21:58,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:58,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:21:58,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-10-20 06:21:58,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868447284] [2020-10-20 06:21:58,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-20 06:21:58,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:58,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-20 06:21:58,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-10-20 06:21:58,237 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 21 states. [2020-10-20 06:21:58,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:58,428 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-10-20 06:21:58,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-20 06:21:58,429 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2020-10-20 06:21:58,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:58,431 INFO L225 Difference]: With dead ends: 54 [2020-10-20 06:21:58,431 INFO L226 Difference]: Without dead ends: 48 [2020-10-20 06:21:58,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2020-10-20 06:21:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-20 06:21:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-20 06:21:58,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 06:21:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-10-20 06:21:58,438 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 38 [2020-10-20 06:21:58,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:58,438 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-10-20 06:21:58,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-20 06:21:58,438 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-10-20 06:21:58,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-20 06:21:58,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:58,440 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2020-10-20 06:21:58,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:58,641 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:58,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:58,642 INFO L82 PathProgramCache]: Analyzing trace with hash 360224311, now seen corresponding path program 9 times [2020-10-20 06:21:58,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:58,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669902042] [2020-10-20 06:21:58,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:58,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669902042] [2020-10-20 06:21:58,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942302205] [2020-10-20 06:21:58,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:59,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-20 06:21:59,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:21:59,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-20 06:21:59,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:59,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:21:59,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-10-20 06:21:59,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463265706] [2020-10-20 06:21:59,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-20 06:21:59,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:59,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-20 06:21:59,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-20 06:21:59,077 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 23 states. [2020-10-20 06:21:59,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:21:59,307 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-10-20 06:21:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-20 06:21:59,308 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2020-10-20 06:21:59,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:21:59,309 INFO L225 Difference]: With dead ends: 58 [2020-10-20 06:21:59,309 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 06:21:59,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2020-10-20 06:21:59,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 06:21:59,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-10-20 06:21:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 06:21:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-10-20 06:21:59,317 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 42 [2020-10-20 06:21:59,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:21:59,318 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-10-20 06:21:59,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-20 06:21:59,318 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-10-20 06:21:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-20 06:21:59,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:21:59,319 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2020-10-20 06:21:59,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:59,528 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:21:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:21:59,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1334534971, now seen corresponding path program 10 times [2020-10-20 06:21:59,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:21:59,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723966321] [2020-10-20 06:21:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:21:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:21:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:59,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723966321] [2020-10-20 06:21:59,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982029365] [2020-10-20 06:21:59,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:21:59,851 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:21:59,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:21:59,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-20 06:21:59,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:21:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:21:59,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:21:59,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-10-20 06:21:59,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321611928] [2020-10-20 06:21:59,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-20 06:21:59,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:21:59,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-20 06:21:59,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-20 06:21:59,920 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 25 states. [2020-10-20 06:22:00,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:00,170 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-10-20 06:22:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-20 06:22:00,171 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-10-20 06:22:00,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:00,172 INFO L225 Difference]: With dead ends: 62 [2020-10-20 06:22:00,172 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 06:22:00,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2020-10-20 06:22:00,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 06:22:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-20 06:22:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-20 06:22:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-10-20 06:22:00,182 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2020-10-20 06:22:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:00,183 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-10-20 06:22:00,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-20 06:22:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-10-20 06:22:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-20 06:22:00,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:00,187 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:00,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-20 06:22:00,399 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:00,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:00,400 INFO L82 PathProgramCache]: Analyzing trace with hash 2041056831, now seen corresponding path program 11 times [2020-10-20 06:22:00,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:00,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434223472] [2020-10-20 06:22:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:00,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434223472] [2020-10-20 06:22:00,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394631047] [2020-10-20 06:22:00,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:00,800 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-10-20 06:22:00,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:00,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-20 06:22:00,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:00,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:00,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-10-20 06:22:00,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270310884] [2020-10-20 06:22:00,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-20 06:22:00,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:00,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-20 06:22:00,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-10-20 06:22:00,878 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 27 states. [2020-10-20 06:22:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:01,151 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-10-20 06:22:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-20 06:22:01,152 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2020-10-20 06:22:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:01,153 INFO L225 Difference]: With dead ends: 66 [2020-10-20 06:22:01,153 INFO L226 Difference]: Without dead ends: 60 [2020-10-20 06:22:01,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=417, Invalid=989, Unknown=0, NotChecked=0, Total=1406 [2020-10-20 06:22:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-20 06:22:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-10-20 06:22:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 06:22:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-10-20 06:22:01,160 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2020-10-20 06:22:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:01,160 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-10-20 06:22:01,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-20 06:22:01,161 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-10-20 06:22:01,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-20 06:22:01,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:01,162 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:01,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-20 06:22:01,377 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:01,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:01,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1615882429, now seen corresponding path program 12 times [2020-10-20 06:22:01,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:01,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335405970] [2020-10-20 06:22:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:01,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335405970] [2020-10-20 06:22:01,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789900966] [2020-10-20 06:22:01,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:01,985 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-20 06:22:01,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:01,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-20 06:22:01,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:02,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:02,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-10-20 06:22:02,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829970410] [2020-10-20 06:22:02,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-20 06:22:02,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:02,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-20 06:22:02,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2020-10-20 06:22:02,070 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 29 states. [2020-10-20 06:22:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:02,376 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-10-20 06:22:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-20 06:22:02,377 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2020-10-20 06:22:02,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:02,378 INFO L225 Difference]: With dead ends: 70 [2020-10-20 06:22:02,378 INFO L226 Difference]: Without dead ends: 64 [2020-10-20 06:22:02,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2020-10-20 06:22:02,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-20 06:22:02,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-10-20 06:22:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-20 06:22:02,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-10-20 06:22:02,396 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 54 [2020-10-20 06:22:02,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:02,398 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-10-20 06:22:02,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-20 06:22:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-10-20 06:22:02,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-20 06:22:02,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:02,399 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:02,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 06:22:02,616 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:02,616 INFO L82 PathProgramCache]: Analyzing trace with hash -184353209, now seen corresponding path program 13 times [2020-10-20 06:22:02,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:02,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295000704] [2020-10-20 06:22:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:02,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295000704] [2020-10-20 06:22:02,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769488636] [2020-10-20 06:22:02,997 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:03,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-20 06:22:03,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:03,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:03,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-10-20 06:22:03,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243609583] [2020-10-20 06:22:03,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-20 06:22:03,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:03,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-20 06:22:03,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2020-10-20 06:22:03,090 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 31 states. [2020-10-20 06:22:03,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:03,416 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2020-10-20 06:22:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-20 06:22:03,416 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 58 [2020-10-20 06:22:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:03,417 INFO L225 Difference]: With dead ends: 74 [2020-10-20 06:22:03,417 INFO L226 Difference]: Without dead ends: 68 [2020-10-20 06:22:03,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2020-10-20 06:22:03,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-20 06:22:03,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-10-20 06:22:03,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-20 06:22:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-10-20 06:22:03,423 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 58 [2020-10-20 06:22:03,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:03,424 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-10-20 06:22:03,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-20 06:22:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-10-20 06:22:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-20 06:22:03,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:03,425 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:03,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:03,637 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:03,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:03,637 INFO L82 PathProgramCache]: Analyzing trace with hash 344146763, now seen corresponding path program 14 times [2020-10-20 06:22:03,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:03,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772400414] [2020-10-20 06:22:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:04,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772400414] [2020-10-20 06:22:04,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840688815] [2020-10-20 06:22:04,024 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:04,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:22:04,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:04,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-20 06:22:04,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:04,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:04,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-10-20 06:22:04,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234246838] [2020-10-20 06:22:04,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-20 06:22:04,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:04,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-20 06:22:04,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2020-10-20 06:22:04,139 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 33 states. [2020-10-20 06:22:04,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:04,576 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2020-10-20 06:22:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-20 06:22:04,577 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 62 [2020-10-20 06:22:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:04,578 INFO L225 Difference]: With dead ends: 78 [2020-10-20 06:22:04,578 INFO L226 Difference]: Without dead ends: 72 [2020-10-20 06:22:04,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=633, Invalid=1529, Unknown=0, NotChecked=0, Total=2162 [2020-10-20 06:22:04,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-20 06:22:04,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-10-20 06:22:04,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-20 06:22:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-10-20 06:22:04,593 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 62 [2020-10-20 06:22:04,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:04,596 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-10-20 06:22:04,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-20 06:22:04,596 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-10-20 06:22:04,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-20 06:22:04,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:04,602 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:04,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 06:22:04,803 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:04,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:04,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1083270735, now seen corresponding path program 15 times [2020-10-20 06:22:04,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:04,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425259742] [2020-10-20 06:22:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:05,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425259742] [2020-10-20 06:22:05,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676517224] [2020-10-20 06:22:05,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:05,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-10-20 06:22:05,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:05,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 32 conjunts are in the unsatisfiable core [2020-10-20 06:22:05,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:05,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:05,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-10-20 06:22:05,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946702629] [2020-10-20 06:22:05,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-20 06:22:05,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:05,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-20 06:22:05,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2020-10-20 06:22:05,547 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 35 states. [2020-10-20 06:22:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:05,917 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-10-20 06:22:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-20 06:22:05,918 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 66 [2020-10-20 06:22:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:05,918 INFO L225 Difference]: With dead ends: 82 [2020-10-20 06:22:05,918 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 06:22:05,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=715, Invalid=1735, Unknown=0, NotChecked=0, Total=2450 [2020-10-20 06:22:05,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 06:22:05,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2020-10-20 06:22:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-20 06:22:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-10-20 06:22:05,925 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 66 [2020-10-20 06:22:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:05,926 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-10-20 06:22:05,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-20 06:22:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-10-20 06:22:05,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-20 06:22:05,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:05,928 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:06,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 06:22:06,140 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:06,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:06,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1559337133, now seen corresponding path program 16 times [2020-10-20 06:22:06,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:06,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123823919] [2020-10-20 06:22:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:06,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123823919] [2020-10-20 06:22:06,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018448792] [2020-10-20 06:22:06,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:06,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:22:06,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:06,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-20 06:22:06,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:06,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:06,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-10-20 06:22:06,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273387138] [2020-10-20 06:22:06,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-20 06:22:06,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:06,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-20 06:22:06,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2020-10-20 06:22:06,756 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 37 states. [2020-10-20 06:22:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:07,201 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-10-20 06:22:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-20 06:22:07,203 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 70 [2020-10-20 06:22:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:07,204 INFO L225 Difference]: With dead ends: 86 [2020-10-20 06:22:07,205 INFO L226 Difference]: Without dead ends: 80 [2020-10-20 06:22:07,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2020-10-20 06:22:07,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-20 06:22:07,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-10-20 06:22:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-20 06:22:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2020-10-20 06:22:07,211 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 70 [2020-10-20 06:22:07,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:07,211 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2020-10-20 06:22:07,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-20 06:22:07,212 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2020-10-20 06:22:07,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-20 06:22:07,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:07,213 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:07,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:07,426 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:07,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:07,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1923398057, now seen corresponding path program 17 times [2020-10-20 06:22:07,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:07,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379998879] [2020-10-20 06:22:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:08,016 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:08,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379998879] [2020-10-20 06:22:08,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815022513] [2020-10-20 06:22:08,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:08,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-10-20 06:22:08,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:08,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-20 06:22:08,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:08,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:08,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-10-20 06:22:08,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040934283] [2020-10-20 06:22:08,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-20 06:22:08,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:08,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-20 06:22:08,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2020-10-20 06:22:08,279 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 39 states. [2020-10-20 06:22:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:08,748 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-10-20 06:22:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-20 06:22:08,752 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 74 [2020-10-20 06:22:08,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:08,753 INFO L225 Difference]: With dead ends: 90 [2020-10-20 06:22:08,753 INFO L226 Difference]: Without dead ends: 84 [2020-10-20 06:22:08,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=894, Invalid=2186, Unknown=0, NotChecked=0, Total=3080 [2020-10-20 06:22:08,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-20 06:22:08,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-10-20 06:22:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-20 06:22:08,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-10-20 06:22:08,758 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2020-10-20 06:22:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:08,758 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-10-20 06:22:08,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-20 06:22:08,759 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-10-20 06:22:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-20 06:22:08,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:08,759 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:08,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:08,960 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:08,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:08,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1202125989, now seen corresponding path program 18 times [2020-10-20 06:22:08,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:08,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400610214] [2020-10-20 06:22:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:09,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400610214] [2020-10-20 06:22:09,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406607422] [2020-10-20 06:22:09,594 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:10,017 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-10-20 06:22:10,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:22:10,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 61 conjunts are in the unsatisfiable core [2020-10-20 06:22:10,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:22:10,149 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-20 06:22:10,150 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,159 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:10,160 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,161 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-10-20 06:22:10,297 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:10,297 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:10,299 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:10,302 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,318 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-10-20 06:22:10,325 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,326 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-10-20 06:22:10,434 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:10,434 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:10,435 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:10,437 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,454 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-10-20 06:22:10,455 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,456 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-10-20 06:22:10,554 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:10,555 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:10,556 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:10,561 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,578 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-10-20 06:22:10,579 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,580 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-10-20 06:22:10,670 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:10,671 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:10,672 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:10,673 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,693 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-10-20 06:22:10,696 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,696 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-10-20 06:22:10,798 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:10,798 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:10,799 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:10,800 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,817 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-10-20 06:22:10,818 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,818 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-10-20 06:22:10,932 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:10,933 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:10,933 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:10,935 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,950 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-10-20 06:22:10,951 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:22:10,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-10-20 06:22:11,067 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:11,067 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:11,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,069 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,084 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-10-20 06:22:11,085 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,086 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-10-20 06:22:11,209 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:11,209 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:11,211 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,213 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,232 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-10-20 06:22:11,234 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,235 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:9 [2020-10-20 06:22:11,286 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:11,286 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:11,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,288 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,307 INFO L625 ElimStorePlain]: treesize reduction 20, result has 60.8 percent of original size [2020-10-20 06:22:11,308 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-20 06:22:11,308 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:19 [2020-10-20 06:22:11,353 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,445 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,467 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-20 06:22:11,467 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,485 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:11,486 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:11,487 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,490 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,527 INFO L625 ElimStorePlain]: treesize reduction 30, result has 55.2 percent of original size [2020-10-20 06:22:11,529 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-20 06:22:11,530 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:13 [2020-10-20 06:22:11,531 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,617 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,625 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-20 06:22:11,625 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,641 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:11,641 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:11,642 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,644 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,672 INFO L625 ElimStorePlain]: treesize reduction 30, result has 55.2 percent of original size [2020-10-20 06:22:11,673 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-20 06:22:11,674 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:13 [2020-10-20 06:22:11,674 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,716 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,760 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,784 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:11,785 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:11,786 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,788 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,793 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-20 06:22:11,793 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,820 INFO L625 ElimStorePlain]: treesize reduction 30, result has 55.2 percent of original size [2020-10-20 06:22:11,821 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-20 06:22:11,821 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:13 [2020-10-20 06:22:11,823 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,873 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,923 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,933 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-20 06:22:11,934 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,964 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:11,964 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:11,965 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:11,967 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:11,993 INFO L625 ElimStorePlain]: treesize reduction 30, result has 55.2 percent of original size [2020-10-20 06:22:11,994 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-20 06:22:11,994 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:13 [2020-10-20 06:22:11,996 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:12,042 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:12,087 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:12,095 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-20 06:22:12,096 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:12,112 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:12,113 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-10-20 06:22:12,114 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:12,115 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:12,143 INFO L625 ElimStorePlain]: treesize reduction 30, result has 55.2 percent of original size [2020-10-20 06:22:12,150 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-20 06:22:12,150 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:13 [2020-10-20 06:22:12,151 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:12,204 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:12,257 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:22:12,263 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-20 06:22:12,264 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:22:12,266 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:22:12,266 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:22:12,267 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-10-20 06:22:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 105 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:22:12,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:22:12,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 76 [2020-10-20 06:22:12,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50248351] [2020-10-20 06:22:12,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-20 06:22:12,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:12,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-20 06:22:12,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1032, Invalid=4668, Unknown=0, NotChecked=0, Total=5700 [2020-10-20 06:22:12,343 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 76 states. [2020-10-20 06:22:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:14,481 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2020-10-20 06:22:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-20 06:22:14,482 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 78 [2020-10-20 06:22:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:14,483 INFO L225 Difference]: With dead ends: 93 [2020-10-20 06:22:14,483 INFO L226 Difference]: Without dead ends: 87 [2020-10-20 06:22:14,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2505, Invalid=9927, Unknown=0, NotChecked=0, Total=12432 [2020-10-20 06:22:14,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-20 06:22:14,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2020-10-20 06:22:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-20 06:22:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-10-20 06:22:14,500 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 78 [2020-10-20 06:22:14,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:14,501 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-10-20 06:22:14,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-20 06:22:14,501 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-10-20 06:22:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-20 06:22:14,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:22:14,502 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:22:14,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:22:14,715 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:22:14,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:22:14,715 INFO L82 PathProgramCache]: Analyzing trace with hash 145436095, now seen corresponding path program 1 times [2020-10-20 06:22:14,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:22:14,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355032024] [2020-10-20 06:22:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:22:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:22:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-20 06:22:14,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355032024] [2020-10-20 06:22:14,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:22:14,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:22:14,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746219291] [2020-10-20 06:22:14,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:22:14,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:22:14,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:22:14,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:22:14,758 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 4 states. [2020-10-20 06:22:14,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:22:14,769 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-10-20 06:22:14,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:22:14,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-10-20 06:22:14,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:22:14,772 INFO L225 Difference]: With dead ends: 84 [2020-10-20 06:22:14,773 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:22:14,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 06:22:14,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:22:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:22:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:22:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:22:14,774 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2020-10-20 06:22:14,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:22:14,774 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:22:14,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:22:14,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:22:14,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:22:14,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-20 06:22:14,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:22:14,910 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2020-10-20 06:22:14,910 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:22:14,910 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-20 06:22:14,910 INFO L274 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-10-20 06:22:14,910 INFO L274 CegarLoopResult]: For program point L17-2(lines 10 21) no Hoare annotation was computed. [2020-10-20 06:22:14,911 INFO L274 CegarLoopResult]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2020-10-20 06:22:14,911 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2020-10-20 06:22:14,911 INFO L274 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-10-20 06:22:14,911 INFO L274 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-10-20 06:22:14,911 INFO L270 CegarLoopResult]: At program point L13-5(lines 13 15) the Hoare annotation is: (or (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~i~0 1) (= ULTIMATE.start_main_~i~0 3) (and (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|) (+ |ULTIMATE.start_main_~#a~0.offset| 12)) 2147483647) (<= 4 ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~i~0 2)) [2020-10-20 06:22:14,911 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 06:22:14,912 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2020-10-20 06:22:14,912 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-10-20 06:22:14,912 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:22:14,912 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:22:14,913 INFO L277 CegarLoopResult]: At program point L20(lines 10 21) the Hoare annotation is: true [2020-10-20 06:22:14,913 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-20 06:22:14,913 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-10-20 06:22:14,924 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-20 06:22:14,931 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-20 06:22:14,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:22:14 BoogieIcfgContainer [2020-10-20 06:22:14,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:22:14,935 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:22:14,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:22:14,935 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:22:14,936 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:21:52" (3/4) ... [2020-10-20 06:22:14,940 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:22:14,951 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 06:22:14,951 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 06:22:14,952 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:22:14,992 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:22:14,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:22:14,997 INFO L168 Benchmark]: Toolchain (without parser) took 22743.78 ms. Allocated memory was 34.6 MB in the beginning and 119.0 MB in the end (delta: 84.4 MB). Free memory was 6.6 MB in the beginning and 8.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 82.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,997 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 11.7 MB in the beginning and 11.6 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.14 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 19.1 MB in the beginning and 27.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 9.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.11 ms. Allocated memory is still 45.1 MB. Free memory was 27.6 MB in the beginning and 26.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,998 INFO L168 Benchmark]: Boogie Preprocessor took 26.39 ms. Allocated memory is still 45.1 MB. Free memory was 26.0 MB in the beginning and 24.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,999 INFO L168 Benchmark]: RCFGBuilder took 292.58 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 24.6 MB in the beginning and 25.3 MB in the end (delta: -634.5 kB). Peak memory consumption was 12.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,999 INFO L168 Benchmark]: TraceAbstraction took 22006.73 ms. Allocated memory was 46.7 MB in the beginning and 119.0 MB in the end (delta: 72.4 MB). Free memory was 24.8 MB in the beginning and 12.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 85.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:14,999 INFO L168 Benchmark]: Witness Printer took 58.01 ms. Allocated memory is still 119.0 MB. Free memory was 12.2 MB in the beginning and 8.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:22:15,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 34.1 MB. Free memory was 11.7 MB in the beginning and 11.6 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 301.14 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 19.1 MB in the beginning and 27.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 9.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 40.11 ms. Allocated memory is still 45.1 MB. Free memory was 27.6 MB in the beginning and 26.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.39 ms. Allocated memory is still 45.1 MB. Free memory was 26.0 MB in the beginning and 24.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 292.58 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 24.6 MB in the beginning and 25.3 MB in the end (delta: -634.5 kB). Peak memory consumption was 12.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 22006.73 ms. Allocated memory was 46.7 MB in the beginning and 119.0 MB in the end (delta: 72.4 MB). Free memory was 24.8 MB in the beginning and 12.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 85.0 MB. Max. memory is 14.3 GB. * Witness Printer took 58.01 ms. Allocated memory is still 119.0 MB. Free memory was 12.2 MB in the beginning and 8.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2020-10-20 06:22:15,015 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-20 06:22:15,015 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((i == 0 || i == 1) || i == 3) || (unknown-#memory_int-unknown[a][a + 12] <= 2147483647 && 4 <= i)) || i == 2 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.7s, OverallIterations: 22, TraceHistogramMax: 19, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 196 SDtfs, 739 SDslu, 2319 SDs, 0 SdLazy, 3333 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1387 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 636 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6952 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 55 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 22 NumberOfFragments, 27 HoareAnnotationTreeSize, 2 FomulaSimplifications, 168 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 188 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 1701 NumberOfCodeBlocks, 1697 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 1660 ConstructedInterpolants, 0 QuantifiedInterpolants, 288776 SizeOfPredicates, 193 NumberOfNonLiveVariables, 2186 ConjunctsInSsa, 405 ConjunctsInUnsatCore, 41 InterpolantComputations, 4 PerfectInterpolantSequences, 815/8808 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...