./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 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-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 0.1.25-9a8b2e8 [2020-10-20 06:25:59,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:25:59,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:25:59,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:25:59,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:25:59,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:25:59,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:25:59,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:25:59,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:25:59,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:25:59,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:25:59,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:25:59,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:25:59,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:25:59,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:25:59,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:25:59,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:25:59,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:25:59,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:25:59,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:25:59,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:25:59,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:25:59,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:25:59,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:25:59,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:25:59,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:25:59,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:25:59,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:25:59,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:25:59,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:25:59,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:25:59,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:25:59,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:25:59,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:25:59,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:25:59,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:25:59,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:25:59,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:25:59,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:25:59,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:25:59,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:25:59,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:25:59,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:25:59,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:25:59,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:25:59,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:25:59,932 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:25:59,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:25:59,932 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:25:59,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:25:59,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:25:59,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:25:59,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:25:59,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:25:59,935 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:25:59,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:25:59,936 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:25:59,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:25:59,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:25:59,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:25:59,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:25:59,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:25:59,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:25:59,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:25:59,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:25:59,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:25:59,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:25:59,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:25:59,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:25:59,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:25:59,942 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 [2020-10-20 06:26:00,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:26:00,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:26:00,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:26:00,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:26:00,182 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:26:00,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2020-10-20 06:26:00,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/845d49be6/adbe3f7b4bd74e5f8a49d65292594297/FLAGe0f31b2fc [2020-10-20 06:26:00,810 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:26:00,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2020-10-20 06:26:00,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/845d49be6/adbe3f7b4bd74e5f8a49d65292594297/FLAGe0f31b2fc [2020-10-20 06:26:01,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/845d49be6/adbe3f7b4bd74e5f8a49d65292594297 [2020-10-20 06:26:01,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:26:01,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:26:01,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:26:01,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:26:01,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:26:01,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:26:01" (1/1) ... [2020-10-20 06:26:01,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61619f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01, skipping insertion in model container [2020-10-20 06:26:01,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:26:01" (1/1) ... [2020-10-20 06:26:01,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:26:01,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:26:01,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:26:01,511 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:26:01,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:26:01,539 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:26:01,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01 WrapperNode [2020-10-20 06:26:01,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:26:01,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:26:01,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:26:01,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:26:01,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01" (1/1) ... [2020-10-20 06:26:01,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01" (1/1) ... [2020-10-20 06:26:01,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:26:01,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:26:01,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:26:01,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:26:01,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01" (1/1) ... [2020-10-20 06:26:01,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01" (1/1) ... [2020-10-20 06:26:01,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01" (1/1) ... [2020-10-20 06:26:01,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01" (1/1) ... [2020-10-20 06:26:01,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01" (1/1) ... [2020-10-20 06:26:01,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01" (1/1) ... [2020-10-20 06:26:01,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01" (1/1) ... [2020-10-20 06:26:01,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:26:01,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:26:01,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:26:01,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:26:01,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01" (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 06:26:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-10-20 06:26:01,667 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-10-20 06:26:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:26:01,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:26:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:26:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:26:01,938 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:26:01,938 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 06:26:01,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:26:01 BoogieIcfgContainer [2020-10-20 06:26:01,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:26:01,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:26:01,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:26:01,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:26:01,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:26:01" (1/3) ... [2020-10-20 06:26:01,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa3580f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:26:01, skipping insertion in model container [2020-10-20 06:26:01,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:26:01" (2/3) ... [2020-10-20 06:26:01,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa3580f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:26:01, skipping insertion in model container [2020-10-20 06:26:01,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:26:01" (3/3) ... [2020-10-20 06:26:01,949 INFO L111 eAbstractionObserver]: Analyzing ICFG MultCommutative-1.c [2020-10-20 06:26:01,964 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:26:01,971 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-20 06:26:01,986 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-20 06:26:02,013 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:26:02,014 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:26:02,014 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:26:02,014 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:26:02,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:26:02,014 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:26:02,015 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:26:02,015 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:26:02,039 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-20 06:26:02,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:26:02,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:02,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:26:02,046 INFO L429 AbstractCegarLoop]: === Iteration 1 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:02,053 INFO L82 PathProgramCache]: Analyzing trace with hash 617854126, now seen corresponding path program 1 times [2020-10-20 06:26:02,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:02,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106331453] [2020-10-20 06:26:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:02,283 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 06:26:02,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106331453] [2020-10-20 06:26:02,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:26:02,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:26:02,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607671066] [2020-10-20 06:26:02,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:26:02,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:02,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:26:02,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:26:02,313 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-10-20 06:26:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:02,465 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2020-10-20 06:26:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:26:02,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-20 06:26:02,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:02,485 INFO L225 Difference]: With dead ends: 82 [2020-10-20 06:26:02,486 INFO L226 Difference]: Without dead ends: 43 [2020-10-20 06:26:02,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:26:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-20 06:26:02,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-10-20 06:26:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 06:26:02,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-10-20 06:26:02,538 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 8 [2020-10-20 06:26:02,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:02,539 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-10-20 06:26:02,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:26:02,539 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-10-20 06:26:02,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:26:02,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:02,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:26:02,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:26:02,541 INFO L429 AbstractCegarLoop]: === Iteration 2 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:02,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:02,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1973615774, now seen corresponding path program 1 times [2020-10-20 06:26:02,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:02,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83013213] [2020-10-20 06:26:02,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:02,611 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 06:26:02,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83013213] [2020-10-20 06:26:02,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:26:02,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:26:02,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96793130] [2020-10-20 06:26:02,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:26:02,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:02,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:26:02,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:26:02,616 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 5 states. [2020-10-20 06:26:02,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:02,730 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-20 06:26:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:26:02,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-10-20 06:26:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:02,733 INFO L225 Difference]: With dead ends: 59 [2020-10-20 06:26:02,733 INFO L226 Difference]: Without dead ends: 57 [2020-10-20 06:26:02,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:26:02,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-20 06:26:02,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-10-20 06:26:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 06:26:02,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-10-20 06:26:02,748 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 9 [2020-10-20 06:26:02,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:02,748 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-10-20 06:26:02,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:26:02,749 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-10-20 06:26:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:26:02,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:02,750 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:26:02,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:26:02,750 INFO L429 AbstractCegarLoop]: === Iteration 3 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:02,751 INFO L82 PathProgramCache]: Analyzing trace with hash -716923045, now seen corresponding path program 1 times [2020-10-20 06:26:02,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:02,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936346496] [2020-10-20 06:26:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:02,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936346496] [2020-10-20 06:26:02,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:26:02,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:26:02,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748533443] [2020-10-20 06:26:02,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:26:02,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:02,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:26:02,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:26:02,812 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 5 states. [2020-10-20 06:26:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:02,909 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-20 06:26:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:26:02,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-20 06:26:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:02,911 INFO L225 Difference]: With dead ends: 77 [2020-10-20 06:26:02,912 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 06:26:02,912 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 [2020-10-20 06:26:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 06:26:02,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2020-10-20 06:26:02,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-20 06:26:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2020-10-20 06:26:02,929 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 14 [2020-10-20 06:26:02,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:02,929 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2020-10-20 06:26:02,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:26:02,930 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2020-10-20 06:26:02,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:26:02,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:02,930 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:26:02,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:26:02,931 INFO L429 AbstractCegarLoop]: === Iteration 4 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:02,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:02,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1906450887, now seen corresponding path program 1 times [2020-10-20 06:26:02,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:02,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156339526] [2020-10-20 06:26:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:03,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:26:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:03,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156339526] [2020-10-20 06:26:03,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:26:03,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:26:03,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858076861] [2020-10-20 06:26:03,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:26:03,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:03,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:26:03,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:26:03,035 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand 5 states. [2020-10-20 06:26:03,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:03,106 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2020-10-20 06:26:03,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:26:03,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-20 06:26:03,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:03,110 INFO L225 Difference]: With dead ends: 121 [2020-10-20 06:26:03,110 INFO L226 Difference]: Without dead ends: 85 [2020-10-20 06:26:03,111 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 [2020-10-20 06:26:03,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-20 06:26:03,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2020-10-20 06:26:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-20 06:26:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 97 transitions. [2020-10-20 06:26:03,127 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 97 transitions. Word has length 15 [2020-10-20 06:26:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:03,127 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 97 transitions. [2020-10-20 06:26:03,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:26:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 97 transitions. [2020-10-20 06:26:03,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:26:03,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:03,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:26:03,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:26:03,130 INFO L429 AbstractCegarLoop]: === Iteration 5 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:03,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1029571699, now seen corresponding path program 1 times [2020-10-20 06:26:03,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:03,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146668579] [2020-10-20 06:26:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:03,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:26:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:03,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146668579] [2020-10-20 06:26:03,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:26:03,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:26:03,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480233155] [2020-10-20 06:26:03,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:26:03,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:03,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:26:03,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:26:03,199 INFO L87 Difference]: Start difference. First operand 76 states and 97 transitions. Second operand 5 states. [2020-10-20 06:26:03,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:03,288 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2020-10-20 06:26:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:26:03,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-20 06:26:03,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:03,290 INFO L225 Difference]: With dead ends: 102 [2020-10-20 06:26:03,290 INFO L226 Difference]: Without dead ends: 101 [2020-10-20 06:26:03,291 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 [2020-10-20 06:26:03,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-20 06:26:03,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2020-10-20 06:26:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-20 06:26:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2020-10-20 06:26:03,307 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 16 [2020-10-20 06:26:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:03,308 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2020-10-20 06:26:03,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:26:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2020-10-20 06:26:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:26:03,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:03,310 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:26:03,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:26:03,310 INFO L429 AbstractCegarLoop]: === Iteration 6 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:03,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:03,311 INFO L82 PathProgramCache]: Analyzing trace with hash -985645195, now seen corresponding path program 1 times [2020-10-20 06:26:03,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:03,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53301827] [2020-10-20 06:26:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:26:03,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53301827] [2020-10-20 06:26:03,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:26:03,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:26:03,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465118987] [2020-10-20 06:26:03,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:26:03,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:03,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:26:03,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:26:03,384 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand 5 states. [2020-10-20 06:26:03,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:03,467 INFO L93 Difference]: Finished difference Result 133 states and 169 transitions. [2020-10-20 06:26:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:26:03,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-20 06:26:03,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:03,470 INFO L225 Difference]: With dead ends: 133 [2020-10-20 06:26:03,470 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 06:26:03,472 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 [2020-10-20 06:26:03,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 06:26:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2020-10-20 06:26:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-20 06:26:03,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-10-20 06:26:03,483 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 19 [2020-10-20 06:26:03,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:03,483 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-10-20 06:26:03,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:26:03,483 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-10-20 06:26:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:26:03,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:03,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:26:03,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:26:03,485 INFO L429 AbstractCegarLoop]: === Iteration 7 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:03,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:03,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1700557631, now seen corresponding path program 1 times [2020-10-20 06:26:03,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:03,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615075873] [2020-10-20 06:26:03,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:03,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 06:26:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:03,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:03,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615075873] [2020-10-20 06:26:03,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408585851] [2020-10-20 06:26:03,565 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 06:26:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:03,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:26:03,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:03,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:03,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-10-20 06:26:03,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912100323] [2020-10-20 06:26:03,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:26:03,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:03,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:26:03,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:26:03,726 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 9 states. [2020-10-20 06:26:03,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:03,824 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-10-20 06:26:03,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:26:03,825 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-20 06:26:03,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:03,826 INFO L225 Difference]: With dead ends: 67 [2020-10-20 06:26:03,826 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 06:26:03,827 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 [2020-10-20 06:26:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 06:26:03,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-20 06:26:03,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 06:26:03,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-20 06:26:03,835 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2020-10-20 06:26:03,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:03,836 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-20 06:26:03,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:26:03,836 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-20 06:26:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:26:03,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:03,838 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:26:04,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-20 06:26:04,055 INFO L429 AbstractCegarLoop]: === Iteration 8 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:04,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:04,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1177679063, now seen corresponding path program 1 times [2020-10-20 06:26:04,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:04,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905393332] [2020-10-20 06:26:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:04,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-20 06:26:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:04,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905393332] [2020-10-20 06:26:04,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795333648] [2020-10-20 06:26:04,179 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 06:26:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:04,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:26:04,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:26:04,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:04,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-20 06:26:04,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888769109] [2020-10-20 06:26:04,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:26:04,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:04,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:26:04,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:26:04,256 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 8 states. [2020-10-20 06:26:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:04,384 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-10-20 06:26:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:26:04,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-20 06:26:04,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:04,385 INFO L225 Difference]: With dead ends: 65 [2020-10-20 06:26:04,385 INFO L226 Difference]: Without dead ends: 64 [2020-10-20 06:26:04,386 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 [2020-10-20 06:26:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-20 06:26:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2020-10-20 06:26:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 06:26:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-20 06:26:04,399 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 19 [2020-10-20 06:26:04,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:04,399 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-20 06:26:04,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:26:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-20 06:26:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:26:04,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:04,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:26:04,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:04,613 INFO L429 AbstractCegarLoop]: === Iteration 9 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:04,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:04,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1664379658, now seen corresponding path program 1 times [2020-10-20 06:26:04,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:04,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496437442] [2020-10-20 06:26:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:04,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:26:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:04,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-20 06:26:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:04,701 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:26:04,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496437442] [2020-10-20 06:26:04,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072472686] [2020-10-20 06:26:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:04,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:26:04,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:04,804 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:26:04,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:04,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-10-20 06:26:04,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951553112] [2020-10-20 06:26:04,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:26:04,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:04,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:26:04,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:26:04,808 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 11 states. [2020-10-20 06:26:05,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:05,034 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2020-10-20 06:26:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:26:05,035 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-20 06:26:05,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:05,036 INFO L225 Difference]: With dead ends: 94 [2020-10-20 06:26:05,036 INFO L226 Difference]: Without dead ends: 93 [2020-10-20 06:26:05,037 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 [2020-10-20 06:26:05,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-20 06:26:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2020-10-20 06:26:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 06:26:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2020-10-20 06:26:05,046 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 25 [2020-10-20 06:26:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:05,046 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2020-10-20 06:26:05,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:26:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2020-10-20 06:26:05,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:26:05,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:05,048 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] [2020-10-20 06:26:05,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:05,255 INFO L429 AbstractCegarLoop]: === Iteration 10 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:05,256 INFO L82 PathProgramCache]: Analyzing trace with hash 56161900, now seen corresponding path program 1 times [2020-10-20 06:26:05,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:05,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930176689] [2020-10-20 06:26:05,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:05,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-20 06:26:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-20 06:26:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:26:05,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930176689] [2020-10-20 06:26:05,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967843168] [2020-10-20 06:26:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:26:05,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:26:05,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:26:05,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-20 06:26:05,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:26:05,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-20 06:26:05,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385603350] [2020-10-20 06:26:05,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:26:05,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:26:05,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:26:05,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:26:05,438 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand 8 states. [2020-10-20 06:26:05,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:26:05,543 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2020-10-20 06:26:05,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:26:05,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-20 06:26:05,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:26:05,545 INFO L225 Difference]: With dead ends: 97 [2020-10-20 06:26:05,546 INFO L226 Difference]: Without dead ends: 64 [2020-10-20 06:26:05,547 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 [2020-10-20 06:26:05,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-20 06:26:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-10-20 06:26:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 06:26:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-10-20 06:26:05,557 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 26 [2020-10-20 06:26:05,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:26:05,557 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-10-20 06:26:05,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:26:05,557 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-10-20 06:26:05,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 06:26:05,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:26:05,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:26:05,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:26:05,762 INFO L429 AbstractCegarLoop]: === Iteration 11 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:26:05,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:26:05,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1710802957, now seen corresponding path program 1 times [2020-10-20 06:26:05,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:26:05,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436749117] [2020-10-20 06:26:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:26:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:26:05,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:26:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:26:05,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:26:05,859 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:26:05,860 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:26:05,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 06:26:05,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:26:05 BoogieIcfgContainer [2020-10-20 06:26:05,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:26:05,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:26:05,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:26:05,945 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:26:05,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:26:01" (3/4) ... [2020-10-20 06:26:05,947 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:26:05,998 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:26:05,999 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:26:06,001 INFO L168 Benchmark]: Toolchain (without parser) took 4754.11 ms. Allocated memory was 40.4 MB in the beginning and 55.6 MB in the end (delta: 15.2 MB). Free memory was 20.4 MB in the beginning and 20.2 MB in the end (delta: 135.7 kB). Peak memory consumption was 15.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:26:06,002 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 30.9 MB. Free memory was 6.4 MB in the beginning and 6.4 MB in the end (delta: 40.4 kB). Peak memory consumption was 40.4 kB. Max. memory is 14.3 GB. [2020-10-20 06:26:06,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.39 ms. Allocated memory was 40.4 MB in the beginning and 43.0 MB in the end (delta: 2.6 MB). Free memory was 19.5 MB in the beginning and 21.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:26:06,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.29 ms. Allocated memory is still 43.0 MB. Free memory was 21.2 MB in the beginning and 19.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:26:06,004 INFO L168 Benchmark]: Boogie Preprocessor took 22.43 ms. Allocated memory is still 43.0 MB. Free memory was 19.6 MB in the beginning and 18.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:26:06,005 INFO L168 Benchmark]: RCFGBuilder took 347.89 ms. Allocated memory is still 43.0 MB. Free memory was 18.3 MB in the beginning and 18.7 MB in the end (delta: -414.5 kB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:26:06,005 INFO L168 Benchmark]: TraceAbstraction took 4001.74 ms. Allocated memory was 43.0 MB in the beginning and 55.6 MB in the end (delta: 12.6 MB). Free memory was 18.2 MB in the beginning and 23.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:26:06,006 INFO L168 Benchmark]: Witness Printer took 54.17 ms. Allocated memory is still 55.6 MB. Free memory was 23.2 MB in the beginning and 20.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:26:06,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 30.9 MB. Free memory was 6.4 MB in the beginning and 6.4 MB in the end (delta: 40.4 kB). Peak memory consumption was 40.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 287.39 ms. Allocated memory was 40.4 MB in the beginning and 43.0 MB in the end (delta: 2.6 MB). Free memory was 19.5 MB in the beginning and 21.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 30.29 ms. Allocated memory is still 43.0 MB. Free memory was 21.2 MB in the beginning and 19.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 22.43 ms. Allocated memory is still 43.0 MB. Free memory was 19.6 MB in the beginning and 18.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 347.89 ms. Allocated memory is still 43.0 MB. Free memory was 18.3 MB in the beginning and 18.7 MB in the end (delta: -414.5 kB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4001.74 ms. Allocated memory was 43.0 MB in the beginning and 55.6 MB in the end (delta: 12.6 MB). Free memory was 18.2 MB in the beginning and 23.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. * Witness Printer took 54.17 ms. Allocated memory is still 55.6 MB. Free memory was 23.2 MB in the beginning and 20.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 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: 3.8s, 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, 0.8s 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...