./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/MultCommutative-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/MultCommutative-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 f536dfaa325c5623e8e0c5d03d4d9d96bd998e26 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:33:07,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:33:07,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:33:07,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:33:07,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:33:07,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:33:07,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:33:07,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:33:07,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:33:07,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:33:07,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:33:07,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:33:07,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:33:07,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:33:07,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:33:07,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:33:07,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:33:07,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:33:07,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:33:07,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:33:07,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:33:07,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:33:07,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:33:07,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:33:07,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:33:07,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:33:07,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:33:07,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:33:07,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:33:07,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:33:07,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:33:07,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:33:07,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:33:07,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:33:07,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:33:07,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:33:07,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:33:07,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:33:07,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:33:07,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:33:07,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:33:07,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-19 18:33:08,018 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:33:08,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:33:08,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:33:08,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:33:08,021 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:33:08,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:33:08,021 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:33:08,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:33:08,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:33:08,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 18:33:08,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:33:08,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 18:33:08,024 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-19 18:33:08,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:33:08,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:33:08,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 18:33:08,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:33:08,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:33:08,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:33:08,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:33:08,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:33:08,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:33:08,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:33:08,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 18:33:08,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:33:08,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:33:08,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 18:33:08,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:33:08,028 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 -> f536dfaa325c5623e8e0c5d03d4d9d96bd998e26 [2020-10-19 18:33:08,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:33:08,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:33:08,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:33:08,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:33:08,347 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:33:08,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2020-10-19 18:33:08,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977d2873c/9123b19a0c8449f689ddfdd500f77801/FLAG7ff979e7d [2020-10-19 18:33:08,799 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:33:08,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2020-10-19 18:33:08,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977d2873c/9123b19a0c8449f689ddfdd500f77801/FLAG7ff979e7d [2020-10-19 18:33:09,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977d2873c/9123b19a0c8449f689ddfdd500f77801 [2020-10-19 18:33:09,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:33:09,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:33:09,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:33:09,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:33:09,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:33:09,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:33:09" (1/1) ... [2020-10-19 18:33:09,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b456b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09, skipping insertion in model container [2020-10-19 18:33:09,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:33:09" (1/1) ... [2020-10-19 18:33:09,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:33:09,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:33:09,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:33:09,382 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:33:09,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:33:09,414 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:33:09,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09 WrapperNode [2020-10-19 18:33:09,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:33:09,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:33:09,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:33:09,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:33:09,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09" (1/1) ... [2020-10-19 18:33:09,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09" (1/1) ... [2020-10-19 18:33:09,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:33:09,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:33:09,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:33:09,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:33:09,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09" (1/1) ... [2020-10-19 18:33:09,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09" (1/1) ... [2020-10-19 18:33:09,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09" (1/1) ... [2020-10-19 18:33:09,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09" (1/1) ... [2020-10-19 18:33:09,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09" (1/1) ... [2020-10-19 18:33:09,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09" (1/1) ... [2020-10-19 18:33:09,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09" (1/1) ... [2020-10-19 18:33:09,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:33:09,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:33:09,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:33:09,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:33:09,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:33:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-10-19 18:33:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-10-19 18:33:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:33:09,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:33:09,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:33:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:33:09,873 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:33:09,874 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-19 18:33:09,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:33:09 BoogieIcfgContainer [2020-10-19 18:33:09,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:33:09,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:33:09,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:33:09,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:33:09,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:33:09" (1/3) ... [2020-10-19 18:33:09,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eeab661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:33:09, skipping insertion in model container [2020-10-19 18:33:09,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:33:09" (2/3) ... [2020-10-19 18:33:09,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eeab661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:33:09, skipping insertion in model container [2020-10-19 18:33:09,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:33:09" (3/3) ... [2020-10-19 18:33:09,889 INFO L111 eAbstractionObserver]: Analyzing ICFG MultCommutative-1.c [2020-10-19 18:33:09,902 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:33:09,910 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-19 18:33:09,925 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-19 18:33:09,955 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:33:09,955 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 18:33:09,955 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:33:09,956 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:33:09,956 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:33:09,956 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:33:09,956 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:33:09,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:33:09,979 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-19 18:33:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:33:09,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:09,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:33:09,986 INFO L429 AbstractCegarLoop]: === Iteration 1 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:09,994 INFO L82 PathProgramCache]: Analyzing trace with hash 617854126, now seen corresponding path program 1 times [2020-10-19 18:33:10,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:10,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580740786] [2020-10-19 18:33:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:33:10,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580740786] [2020-10-19 18:33:10,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:33:10,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:33:10,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975514343] [2020-10-19 18:33:10,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:33:10,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:33:10,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:33:10,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:33:10,242 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-10-19 18:33:10,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:33:10,395 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2020-10-19 18:33:10,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:33:10,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-19 18:33:10,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:33:10,416 INFO L225 Difference]: With dead ends: 82 [2020-10-19 18:33:10,416 INFO L226 Difference]: Without dead ends: 43 [2020-10-19 18:33:10,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:33:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-19 18:33:10,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-10-19 18:33:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-19 18:33:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-10-19 18:33:10,481 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2020-10-19 18:33:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:33:10,482 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-10-19 18:33:10,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:33:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-10-19 18:33:10,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:33:10,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:10,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:33:10,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:33:10,484 INFO L429 AbstractCegarLoop]: === Iteration 2 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:10,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:10,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1973615774, now seen corresponding path program 1 times [2020-10-19 18:33:10,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:10,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182764994] [2020-10-19 18:33:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:33:10,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182764994] [2020-10-19 18:33:10,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:33:10,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:33:10,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100770447] [2020-10-19 18:33:10,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:33:10,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:33:10,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:33:10,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:33:10,553 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 5 states. [2020-10-19 18:33:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:33:10,652 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-19 18:33:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:33:10,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-19 18:33:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:33:10,655 INFO L225 Difference]: With dead ends: 59 [2020-10-19 18:33:10,655 INFO L226 Difference]: Without dead ends: 57 [2020-10-19 18:33:10,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:33:10,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-19 18:33:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-10-19 18:33:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-19 18:33:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-10-19 18:33:10,670 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 9 [2020-10-19 18:33:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:33:10,670 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-10-19 18:33:10,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:33:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-10-19 18:33:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 18:33:10,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:10,672 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:33:10,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:33:10,673 INFO L429 AbstractCegarLoop]: === Iteration 3 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:10,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:10,673 INFO L82 PathProgramCache]: Analyzing trace with hash -716923045, now seen corresponding path program 1 times [2020-10-19 18:33:10,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:10,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725142382] [2020-10-19 18:33:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:33:10,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725142382] [2020-10-19 18:33:10,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:33:10,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:33:10,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372286457] [2020-10-19 18:33:10,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:33:10,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:33:10,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:33:10,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:33:10,749 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 5 states. [2020-10-19 18:33:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:33:10,852 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-19 18:33:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:33:10,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-19 18:33:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:33:10,855 INFO L225 Difference]: With dead ends: 77 [2020-10-19 18:33:10,855 INFO L226 Difference]: Without dead ends: 76 [2020-10-19 18:33:10,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:33:10,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-19 18:33:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2020-10-19 18:33:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 18:33:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-10-19 18:33:10,873 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 14 [2020-10-19 18:33:10,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:33:10,874 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-10-19 18:33:10,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:33:10,874 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-10-19 18:33:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:33:10,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:10,875 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:33:10,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:33:10,876 INFO L429 AbstractCegarLoop]: === Iteration 4 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:10,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:10,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1906450887, now seen corresponding path program 1 times [2020-10-19 18:33:10,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:10,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396549346] [2020-10-19 18:33:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:10,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-19 18:33:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:33:10,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396549346] [2020-10-19 18:33:10,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:33:10,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:33:10,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240745925] [2020-10-19 18:33:10,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:33:10,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:33:10,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:33:10,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:33:10,961 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 5 states. [2020-10-19 18:33:11,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:33:11,042 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2020-10-19 18:33:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:33:11,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-19 18:33:11,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:33:11,045 INFO L225 Difference]: With dead ends: 121 [2020-10-19 18:33:11,045 INFO L226 Difference]: Without dead ends: 85 [2020-10-19 18:33:11,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:33:11,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-19 18:33:11,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2020-10-19 18:33:11,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-19 18:33:11,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2020-10-19 18:33:11,063 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 15 [2020-10-19 18:33:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:33:11,064 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2020-10-19 18:33:11,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:33:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2020-10-19 18:33:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:33:11,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:11,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:33:11,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:33:11,066 INFO L429 AbstractCegarLoop]: === Iteration 5 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:11,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:11,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1029571699, now seen corresponding path program 1 times [2020-10-19 18:33:11,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:11,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329427704] [2020-10-19 18:33:11,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:11,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-19 18:33:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:33:11,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329427704] [2020-10-19 18:33:11,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:33:11,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:33:11,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676477948] [2020-10-19 18:33:11,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:33:11,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:33:11,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:33:11,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:33:11,170 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 5 states. [2020-10-19 18:33:11,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:33:11,264 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2020-10-19 18:33:11,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:33:11,264 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-19 18:33:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:33:11,266 INFO L225 Difference]: With dead ends: 102 [2020-10-19 18:33:11,267 INFO L226 Difference]: Without dead ends: 101 [2020-10-19 18:33:11,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:33:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-19 18:33:11,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2020-10-19 18:33:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-19 18:33:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2020-10-19 18:33:11,283 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 16 [2020-10-19 18:33:11,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:33:11,283 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2020-10-19 18:33:11,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:33:11,284 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2020-10-19 18:33:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:33:11,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:11,285 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:33:11,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:33:11,286 INFO L429 AbstractCegarLoop]: === Iteration 6 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:11,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:11,286 INFO L82 PathProgramCache]: Analyzing trace with hash -985645195, now seen corresponding path program 1 times [2020-10-19 18:33:11,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:11,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538202048] [2020-10-19 18:33:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:33:11,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538202048] [2020-10-19 18:33:11,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:33:11,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:33:11,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091552973] [2020-10-19 18:33:11,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:33:11,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:33:11,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:33:11,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:33:11,342 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand 5 states. [2020-10-19 18:33:11,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:33:11,407 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2020-10-19 18:33:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:33:11,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-19 18:33:11,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:33:11,409 INFO L225 Difference]: With dead ends: 133 [2020-10-19 18:33:11,410 INFO L226 Difference]: Without dead ends: 59 [2020-10-19 18:33:11,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:33:11,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-19 18:33:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2020-10-19 18:33:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-19 18:33:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-10-19 18:33:11,420 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2020-10-19 18:33:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:33:11,421 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-10-19 18:33:11,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:33:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-10-19 18:33:11,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:33:11,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:11,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:33:11,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:33:11,423 INFO L429 AbstractCegarLoop]: === Iteration 7 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:11,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:11,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1700557631, now seen corresponding path program 1 times [2020-10-19 18:33:11,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:11,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187139515] [2020-10-19 18:33:11,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:11,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 18:33:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:33:11,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187139515] [2020-10-19 18:33:11,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252307607] [2020-10-19 18:33:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:33:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:11,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:33:11,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:33:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:33:11,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:33:11,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-19 18:33:11,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959664422] [2020-10-19 18:33:11,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:33:11,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:33:11,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:33:11,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:33:11,681 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 9 states. [2020-10-19 18:33:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:33:11,778 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-10-19 18:33:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:33:11,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-19 18:33:11,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:33:11,781 INFO L225 Difference]: With dead ends: 67 [2020-10-19 18:33:11,781 INFO L226 Difference]: Without dead ends: 66 [2020-10-19 18:33:11,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:33:11,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-19 18:33:11,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-19 18:33:11,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 18:33:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-19 18:33:11,791 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2020-10-19 18:33:11,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:33:11,792 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-19 18:33:11,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:33:11,792 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-19 18:33:11,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:33:11,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:11,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:33:12,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-19 18:33:12,010 INFO L429 AbstractCegarLoop]: === Iteration 8 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:12,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:12,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1177679063, now seen corresponding path program 1 times [2020-10-19 18:33:12,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:12,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522597305] [2020-10-19 18:33:12,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:12,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 18:33:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:33:12,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522597305] [2020-10-19 18:33:12,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161558671] [2020-10-19 18:33:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:33:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:12,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:33:12,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:33:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:33:12,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:33:12,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-19 18:33:12,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788090994] [2020-10-19 18:33:12,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:33:12,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:33:12,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:33:12,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:33:12,236 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 8 states. [2020-10-19 18:33:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:33:12,361 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-10-19 18:33:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:33:12,362 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-19 18:33:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:33:12,363 INFO L225 Difference]: With dead ends: 65 [2020-10-19 18:33:12,363 INFO L226 Difference]: Without dead ends: 64 [2020-10-19 18:33:12,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:33:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-19 18:33:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2020-10-19 18:33:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-19 18:33:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-19 18:33:12,376 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 19 [2020-10-19 18:33:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:33:12,376 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-19 18:33:12,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:33:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-19 18:33:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:33:12,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:12,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:33:12,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:33:12,597 INFO L429 AbstractCegarLoop]: === Iteration 9 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:12,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:12,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1664379658, now seen corresponding path program 1 times [2020-10-19 18:33:12,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:12,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026148235] [2020-10-19 18:33:12,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:12,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-19 18:33:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:12,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 18:33:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:33:12,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026148235] [2020-10-19 18:33:12,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506441613] [2020-10-19 18:33:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:33:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:12,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:33:12,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:33:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 18:33:12,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:33:12,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-10-19 18:33:12,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373518716] [2020-10-19 18:33:12,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:33:12,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:33:12,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:33:12,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:33:12,820 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 11 states. [2020-10-19 18:33:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:33:13,022 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2020-10-19 18:33:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:33:13,023 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-19 18:33:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:33:13,024 INFO L225 Difference]: With dead ends: 94 [2020-10-19 18:33:13,024 INFO L226 Difference]: Without dead ends: 93 [2020-10-19 18:33:13,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:33:13,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-19 18:33:13,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2020-10-19 18:33:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-19 18:33:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2020-10-19 18:33:13,049 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 25 [2020-10-19 18:33:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:33:13,051 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2020-10-19 18:33:13,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:33:13,051 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2020-10-19 18:33:13,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:33:13,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:13,054 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:33:13,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:33:13,269 INFO L429 AbstractCegarLoop]: === Iteration 10 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:13,270 INFO L82 PathProgramCache]: Analyzing trace with hash 56161900, now seen corresponding path program 1 times [2020-10-19 18:33:13,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:13,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789481935] [2020-10-19 18:33:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:13,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-19 18:33:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-19 18:33:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-19 18:33:13,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789481935] [2020-10-19 18:33:13,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710910286] [2020-10-19 18:33:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:33:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:33:13,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:33:13,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:33:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 18:33:13,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:33:13,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-19 18:33:13,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355624760] [2020-10-19 18:33:13,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:33:13,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:33:13,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:33:13,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:33:13,479 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand 8 states. [2020-10-19 18:33:13,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:33:13,605 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2020-10-19 18:33:13,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:33:13,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-19 18:33:13,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:33:13,607 INFO L225 Difference]: With dead ends: 97 [2020-10-19 18:33:13,607 INFO L226 Difference]: Without dead ends: 64 [2020-10-19 18:33:13,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:33:13,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-19 18:33:13,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-10-19 18:33:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-19 18:33:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-10-19 18:33:13,613 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2020-10-19 18:33:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:33:13,613 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-10-19 18:33:13,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:33:13,614 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-10-19 18:33:13,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:33:13,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:33:13,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:33:13,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:33:13,828 INFO L429 AbstractCegarLoop]: === Iteration 11 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-19 18:33:13,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:33:13,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1710802957, now seen corresponding path program 1 times [2020-10-19 18:33:13,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:33:13,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804767474] [2020-10-19 18:33:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:33:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:33:13,844 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:33:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:33:13,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:33:13,880 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:33:13,881 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:33:13,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:33:13,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:33:13 BoogieIcfgContainer [2020-10-19 18:33:13,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:33:13,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:33:13,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:33:13,932 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:33:13,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:33:09" (3/4) ... [2020-10-19 18:33:13,935 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:33:13,992 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:33:13,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:33:13,995 INFO L168 Benchmark]: Toolchain (without parser) took 4822.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.0 MB). Free memory was 958.6 MB in the beginning and 1.2 GB in the end (delta: -216.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:33:13,996 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:33:13,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.59 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:13,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.59 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 942.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:13,998 INFO L168 Benchmark]: Boogie Preprocessor took 81.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:13,998 INFO L168 Benchmark]: RCFGBuilder took 348.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:13,999 INFO L168 Benchmark]: TraceAbstraction took 4052.29 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:33:13,999 INFO L168 Benchmark]: Witness Printer took 61.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:33:14,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 236.59 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.59 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 942.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 81.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -183.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 348.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4052.29 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -76.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 61.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L28] int m = __VERIFIER_nondet_int(); [L29] COND FALSE !(m < 0) [L32] int n = __VERIFIER_nondet_int(); [L33] COND FALSE !(n < 0) [L36] CALL mult(m, n) VAL [\old(m)=2, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L21] COND FALSE !(m == 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] EXPR m - 1 VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L24] CALL, EXPR mult(n, m - 1) VAL [\old(m)=0, \old(n)=1073741824] [L18] COND FALSE !(m < 0) VAL [\old(m)=0, \old(n)=1073741824, m=0, n=1073741824] [L21] COND TRUE m == 0 [L22] return 0; VAL [\old(m)=0, \old(n)=1073741824, \result=0, m=0, n=1073741824] [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824, m=1, mult(n, m - 1)=0, n=1073741824] [L24] EXPR n + mult(n, m - 1) [L24] return n + mult(n, m - 1); [L24] RET, EXPR mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] [L24] n + mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.9s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 308 SDslu, 622 SDs, 0 SdLazy, 540 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=5, 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, 10 MinimizatonAttempts, 84 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 243 ConstructedInterpolants, 0 QuantifiedInterpolants, 12545 SizeOfPredicates, 5 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 34/70 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 incorrect! Received shutdown request...