./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec 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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cf39454d83b4ec00341bd0b620b0fa6b2321ce21 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 10:41:07,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 10:41:07,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 10:41:07,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 10:41:07,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 10:41:07,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 10:41:07,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 10:41:07,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 10:41:07,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 10:41:07,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 10:41:07,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 10:41:07,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 10:41:07,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 10:41:07,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 10:41:07,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 10:41:07,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 10:41:07,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 10:41:07,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 10:41:07,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 10:41:07,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 10:41:07,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 10:41:07,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 10:41:07,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 10:41:07,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 10:41:07,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 10:41:07,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 10:41:07,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 10:41:07,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 10:41:07,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 10:41:07,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 10:41:07,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 10:41:07,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 10:41:07,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 10:41:07,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 10:41:07,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 10:41:07,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 10:41:07,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 10:41:07,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 10:41:07,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 10:41:07,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 10:41:07,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 10:41:07,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-27 10:41:07,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 10:41:07,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 10:41:07,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 10:41:07,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 10:41:07,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 10:41:07,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 10:41:07,928 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 10:41:07,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 10:41:07,929 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 10:41:07,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 10:41:07,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 10:41:07,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 10:41:07,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 10:41:07,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 10:41:07,930 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 10:41:07,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 10:41:07,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 10:41:07,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 10:41:07,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 10:41:07,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 10:41:07,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 10:41:07,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:41:07,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 10:41:07,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 10:41:07,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 10:41:07,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 10:41:07,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 10:41:07,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 10:41:07,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 10:41:07,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf39454d83b4ec00341bd0b620b0fa6b2321ce21 [2021-08-27 10:41:08,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 10:41:08,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 10:41:08,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 10:41:08,236 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 10:41:08,236 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 10:41:08,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2021-08-27 10:41:08,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a7c11b2/e2b0bce9cf1f43c28d43f538cabbfaae/FLAG067553e40 [2021-08-27 10:41:08,657 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 10:41:08,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2021-08-27 10:41:08,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a7c11b2/e2b0bce9cf1f43c28d43f538cabbfaae/FLAG067553e40 [2021-08-27 10:41:08,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a7c11b2/e2b0bce9cf1f43c28d43f538cabbfaae [2021-08-27 10:41:08,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 10:41:08,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 10:41:08,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 10:41:08,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 10:41:08,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 10:41:08,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ba98ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08, skipping insertion in model container [2021-08-27 10:41:08,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 10:41:08,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 10:41:08,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:41:08,810 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 10:41:08,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 10:41:08,838 INFO L208 MainTranslator]: Completed translation [2021-08-27 10:41:08,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08 WrapperNode [2021-08-27 10:41:08,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 10:41:08,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 10:41:08,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 10:41:08,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 10:41:08,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 10:41:08,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 10:41:08,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 10:41:08,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 10:41:08,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 10:41:08,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 10:41:08,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 10:41:08,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 10:41:08,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08" (1/1) ... [2021-08-27 10:41:08,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 10:41:08,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:08,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 10:41:09,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 10:41:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 10:41:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 10:41:09,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 10:41:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 10:41:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 10:41:09,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 10:41:09,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 10:41:09,268 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-27 10:41:09,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:41:09 BoogieIcfgContainer [2021-08-27 10:41:09,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 10:41:09,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 10:41:09,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 10:41:09,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 10:41:09,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:41:08" (1/3) ... [2021-08-27 10:41:09,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2155160c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:41:09, skipping insertion in model container [2021-08-27 10:41:09,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:41:08" (2/3) ... [2021-08-27 10:41:09,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2155160c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:41:09, skipping insertion in model container [2021-08-27 10:41:09,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:41:09" (3/3) ... [2021-08-27 10:41:09,291 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2021-08-27 10:41:09,296 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 10:41:09,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-27 10:41:09,348 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 10:41:09,360 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 10:41:09,360 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-27 10:41:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-27 10:41:09,389 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:09,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-27 10:41:09,390 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:09,403 INFO L82 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2021-08-27 10:41:09,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:09,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114734385] [2021-08-27 10:41:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:09,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:09,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:09,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114734385] [2021-08-27 10:41:09,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114734385] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:41:09,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:41:09,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:41:09,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94166381] [2021-08-27 10:41:09,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:41:09,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:41:09,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:41:09,630 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:09,712 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-08-27 10:41:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:41:09,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-27 10:41:09,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:09,726 INFO L225 Difference]: With dead ends: 34 [2021-08-27 10:41:09,726 INFO L226 Difference]: Without dead ends: 18 [2021-08-27 10:41:09,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:41:09,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-27 10:41:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-08-27 10:41:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-08-27 10:41:09,760 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2021-08-27 10:41:09,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:09,761 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-08-27 10:41:09,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:09,762 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-08-27 10:41:09,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-27 10:41:09,763 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:09,763 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-08-27 10:41:09,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 10:41:09,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:09,769 INFO L82 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2021-08-27 10:41:09,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:09,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28957797] [2021-08-27 10:41:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:09,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 10:41:09,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:09,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28957797] [2021-08-27 10:41:09,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28957797] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:41:09,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:41:09,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:41:09,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934611185] [2021-08-27 10:41:09,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:41:09,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:41:09,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:41:09,856 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:09,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:09,894 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-08-27 10:41:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:41:09,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-27 10:41:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:09,897 INFO L225 Difference]: With dead ends: 18 [2021-08-27 10:41:09,897 INFO L226 Difference]: Without dead ends: 17 [2021-08-27 10:41:09,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-27 10:41:09,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-27 10:41:09,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-27 10:41:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-08-27 10:41:09,904 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-08-27 10:41:09,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:09,905 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-08-27 10:41:09,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:09,906 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-08-27 10:41:09,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 10:41:09,908 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:09,908 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:09,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 10:41:09,910 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:09,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:09,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1607296535, now seen corresponding path program 1 times [2021-08-27 10:41:09,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:09,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373631925] [2021-08-27 10:41:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:09,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:09,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:09,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373631925] [2021-08-27 10:41:09,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373631925] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:09,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554445657] [2021-08-27 10:41:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:10,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:10,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:10,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:10,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 10:41:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:10,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 10:41:10,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:10,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554445657] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:10,197 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:10,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-27 10:41:10,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269717504] [2021-08-27 10:41:10,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 10:41:10,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:10,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 10:41:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-27 10:41:10,198 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:10,266 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-08-27 10:41:10,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 10:41:10,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-27 10:41:10,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:10,268 INFO L225 Difference]: With dead ends: 28 [2021-08-27 10:41:10,268 INFO L226 Difference]: Without dead ends: 22 [2021-08-27 10:41:10,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 61.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:41:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-27 10:41:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-08-27 10:41:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-08-27 10:41:10,275 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2021-08-27 10:41:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:10,275 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-08-27 10:41:10,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-08-27 10:41:10,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-27 10:41:10,276 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:10,276 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-08-27 10:41:10,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:10,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:10,494 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:10,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:10,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2021-08-27 10:41:10,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:10,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836348078] [2021-08-27 10:41:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:10,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:10,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:10,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836348078] [2021-08-27 10:41:10,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836348078] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:10,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906178316] [2021-08-27 10:41:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:10,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:10,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:10,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:10,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-27 10:41:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:10,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 10:41:10,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:10,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906178316] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:41:10,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 10:41:10,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-08-27 10:41:10,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372106178] [2021-08-27 10:41:10,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:41:10,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:10,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:41:10,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 10:41:10,742 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:10,769 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-08-27 10:41:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:41:10,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-27 10:41:10,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:10,770 INFO L225 Difference]: With dead ends: 18 [2021-08-27 10:41:10,770 INFO L226 Difference]: Without dead ends: 17 [2021-08-27 10:41:10,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:41:10,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-27 10:41:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-27 10:41:10,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-08-27 10:41:10,773 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2021-08-27 10:41:10,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:10,773 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-08-27 10:41:10,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:10,773 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-08-27 10:41:10,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-27 10:41:10,774 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:10,774 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:10,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:10,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-08-27 10:41:10,981 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:10,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1053474021, now seen corresponding path program 2 times [2021-08-27 10:41:10,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:10,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808700656] [2021-08-27 10:41:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:10,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:11,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:11,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808700656] [2021-08-27 10:41:11,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808700656] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:11,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551815494] [2021-08-27 10:41:11,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:41:11,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:11,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:11,074 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:11,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-27 10:41:11,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:41:11,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:11,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 10:41:11,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:11,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551815494] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:11,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:11,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-08-27 10:41:11,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958831133] [2021-08-27 10:41:11,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-27 10:41:11,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:11,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 10:41:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-27 10:41:11,316 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:11,396 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-08-27 10:41:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 10:41:11,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-27 10:41:11,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:11,403 INFO L225 Difference]: With dead ends: 30 [2021-08-27 10:41:11,403 INFO L226 Difference]: Without dead ends: 24 [2021-08-27 10:41:11,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 78.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:41:11,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-27 10:41:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2021-08-27 10:41:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:11,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-08-27 10:41:11,409 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2021-08-27 10:41:11,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:11,416 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-08-27 10:41:11,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:11,419 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-08-27 10:41:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-27 10:41:11,421 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:11,421 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:11,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:11,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:11,637 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:11,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1100938783, now seen corresponding path program 3 times [2021-08-27 10:41:11,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:11,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561637595] [2021-08-27 10:41:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:11,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:11,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:11,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561637595] [2021-08-27 10:41:11,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561637595] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:11,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935725808] [2021-08-27 10:41:11,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:41:11,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:11,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:11,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:11,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-27 10:41:11,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-27 10:41:11,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:11,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 10:41:11,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:11,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935725808] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:11,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:11,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-08-27 10:41:11,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564739093] [2021-08-27 10:41:11,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-27 10:41:11,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:11,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 10:41:11,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-27 10:41:11,875 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:11,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:11,935 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-08-27 10:41:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 10:41:11,939 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-27 10:41:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:11,940 INFO L225 Difference]: With dead ends: 34 [2021-08-27 10:41:11,940 INFO L226 Difference]: Without dead ends: 28 [2021-08-27 10:41:11,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 70.4ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-08-27 10:41:11,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-27 10:41:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-08-27 10:41:11,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-08-27 10:41:11,943 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2021-08-27 10:41:11,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:11,943 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-08-27 10:41:11,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:11,943 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-08-27 10:41:11,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 10:41:11,944 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:11,944 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:11,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:12,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:12,145 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:12,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:12,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1326737629, now seen corresponding path program 4 times [2021-08-27 10:41:12,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:12,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485121143] [2021-08-27 10:41:12,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:12,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:12,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:12,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485121143] [2021-08-27 10:41:12,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485121143] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:12,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248017496] [2021-08-27 10:41:12,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:41:12,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:12,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:12,272 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:12,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-27 10:41:12,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:41:12,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:12,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 10:41:12,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:12,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248017496] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:12,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:12,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-08-27 10:41:12,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044721346] [2021-08-27 10:41:12,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-27 10:41:12,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:12,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-27 10:41:12,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-27 10:41:12,432 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:12,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:12,499 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-08-27 10:41:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 10:41:12,499 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-27 10:41:12,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:12,500 INFO L225 Difference]: With dead ends: 38 [2021-08-27 10:41:12,500 INFO L226 Difference]: Without dead ends: 32 [2021-08-27 10:41:12,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-08-27 10:41:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-27 10:41:12,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-08-27 10:41:12,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:12,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-08-27 10:41:12,504 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2021-08-27 10:41:12,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:12,504 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-08-27 10:41:12,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:12,504 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-08-27 10:41:12,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 10:41:12,505 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:12,505 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:12,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:12,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:12,717 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:12,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:12,717 INFO L82 PathProgramCache]: Analyzing trace with hash 108793383, now seen corresponding path program 5 times [2021-08-27 10:41:12,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:12,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944713800] [2021-08-27 10:41:12,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:12,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:12,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:12,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944713800] [2021-08-27 10:41:12,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944713800] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:12,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256797387] [2021-08-27 10:41:12,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:41:12,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:12,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:12,864 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:12,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-27 10:41:12,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-27 10:41:12,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:12,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 10:41:12,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:13,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256797387] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:13,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:13,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-08-27 10:41:13,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331741131] [2021-08-27 10:41:13,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-27 10:41:13,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:13,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-27 10:41:13,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-08-27 10:41:13,065 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:13,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:13,151 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-08-27 10:41:13,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 10:41:13,155 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-08-27 10:41:13,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:13,155 INFO L225 Difference]: With dead ends: 42 [2021-08-27 10:41:13,155 INFO L226 Difference]: Without dead ends: 36 [2021-08-27 10:41:13,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-08-27 10:41:13,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-27 10:41:13,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2021-08-27 10:41:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-08-27 10:41:13,160 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2021-08-27 10:41:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:13,160 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-08-27 10:41:13,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-08-27 10:41:13,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-27 10:41:13,161 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:13,161 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:13,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:13,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:13,385 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:13,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:13,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1590598869, now seen corresponding path program 6 times [2021-08-27 10:41:13,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:13,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20294051] [2021-08-27 10:41:13,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:13,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:13,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:13,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20294051] [2021-08-27 10:41:13,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20294051] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:13,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315913112] [2021-08-27 10:41:13,539 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:41:13,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:13,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:13,540 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:13,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-27 10:41:13,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-27 10:41:13,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:13,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 10:41:13,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:13,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315913112] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:13,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:13,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-08-27 10:41:13,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960368931] [2021-08-27 10:41:13,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-27 10:41:13,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:13,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-27 10:41:13,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-08-27 10:41:13,769 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:13,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:13,888 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-08-27 10:41:13,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 10:41:13,889 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-08-27 10:41:13,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:13,889 INFO L225 Difference]: With dead ends: 46 [2021-08-27 10:41:13,889 INFO L226 Difference]: Without dead ends: 40 [2021-08-27 10:41:13,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 157.8ms TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2021-08-27 10:41:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-27 10:41:13,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-08-27 10:41:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-08-27 10:41:13,892 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2021-08-27 10:41:13,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:13,892 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-08-27 10:41:13,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-08-27 10:41:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 10:41:13,893 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:13,893 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:13,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:14,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:14,097 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:14,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2022926801, now seen corresponding path program 7 times [2021-08-27 10:41:14,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:14,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596957357] [2021-08-27 10:41:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:14,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:14,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:14,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596957357] [2021-08-27 10:41:14,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596957357] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:14,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775372335] [2021-08-27 10:41:14,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:41:14,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:14,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:14,293 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:14,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-27 10:41:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:14,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-27 10:41:14,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:14,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775372335] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:14,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:14,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-08-27 10:41:14,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765686654] [2021-08-27 10:41:14,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-27 10:41:14,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:14,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-27 10:41:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-08-27 10:41:14,526 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:14,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:14,643 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2021-08-27 10:41:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-27 10:41:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-08-27 10:41:14,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:14,649 INFO L225 Difference]: With dead ends: 50 [2021-08-27 10:41:14,649 INFO L226 Difference]: Without dead ends: 44 [2021-08-27 10:41:14,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 175.1ms TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2021-08-27 10:41:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-27 10:41:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-08-27 10:41:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-08-27 10:41:14,660 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 34 [2021-08-27 10:41:14,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:14,660 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-08-27 10:41:14,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-08-27 10:41:14,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-27 10:41:14,661 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:14,661 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:14,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:14,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-27 10:41:14,862 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:14,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:14,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1492211917, now seen corresponding path program 8 times [2021-08-27 10:41:14,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:14,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477220057] [2021-08-27 10:41:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:14,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:15,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:15,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477220057] [2021-08-27 10:41:15,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477220057] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:15,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312080379] [2021-08-27 10:41:15,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:41:15,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:15,044 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:15,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-27 10:41:15,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:41:15,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:15,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 10:41:15,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:15,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312080379] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:15,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:15,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-08-27 10:41:15,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523973108] [2021-08-27 10:41:15,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-08-27 10:41:15,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-08-27 10:41:15,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-08-27 10:41:15,317 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:15,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:15,456 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-08-27 10:41:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 10:41:15,457 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-08-27 10:41:15,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:15,458 INFO L225 Difference]: With dead ends: 54 [2021-08-27 10:41:15,458 INFO L226 Difference]: Without dead ends: 48 [2021-08-27 10:41:15,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 202.5ms TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2021-08-27 10:41:15,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-27 10:41:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2021-08-27 10:41:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.069767441860465) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-08-27 10:41:15,464 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 38 [2021-08-27 10:41:15,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:15,466 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-08-27 10:41:15,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-08-27 10:41:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-27 10:41:15,473 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:15,474 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:15,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:15,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:15,698 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:15,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:15,699 INFO L82 PathProgramCache]: Analyzing trace with hash 360224311, now seen corresponding path program 9 times [2021-08-27 10:41:15,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:15,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285803750] [2021-08-27 10:41:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:15,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:15,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:15,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285803750] [2021-08-27 10:41:15,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285803750] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:15,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094152582] [2021-08-27 10:41:15,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:41:15,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:15,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:15,933 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:15,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-27 10:41:16,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-08-27 10:41:16,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:16,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 10:41:16,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:16,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094152582] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:16,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:16,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-08-27 10:41:16,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652814696] [2021-08-27 10:41:16,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-27 10:41:16,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:16,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-27 10:41:16,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-08-27 10:41:16,292 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:16,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:16,444 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-08-27 10:41:16,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-27 10:41:16,446 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-27 10:41:16,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:16,446 INFO L225 Difference]: With dead ends: 58 [2021-08-27 10:41:16,446 INFO L226 Difference]: Without dead ends: 52 [2021-08-27 10:41:16,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 245.3ms TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2021-08-27 10:41:16,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-27 10:41:16,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-08-27 10:41:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-08-27 10:41:16,450 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 42 [2021-08-27 10:41:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:16,451 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-08-27 10:41:16,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-08-27 10:41:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-27 10:41:16,451 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:16,452 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:16,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:16,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-27 10:41:16,673 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:16,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1334534971, now seen corresponding path program 10 times [2021-08-27 10:41:16,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:16,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363527612] [2021-08-27 10:41:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:16,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:16,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:16,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363527612] [2021-08-27 10:41:16,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363527612] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:16,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23787794] [2021-08-27 10:41:16,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:41:16,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:16,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:16,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:16,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-27 10:41:17,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:41:17,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:17,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-27 10:41:17,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:17,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23787794] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:17,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:17,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-08-27 10:41:17,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195550641] [2021-08-27 10:41:17,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-27 10:41:17,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-27 10:41:17,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-08-27 10:41:17,279 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:17,471 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2021-08-27 10:41:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-27 10:41:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-27 10:41:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:17,473 INFO L225 Difference]: With dead ends: 62 [2021-08-27 10:41:17,474 INFO L226 Difference]: Without dead ends: 56 [2021-08-27 10:41:17,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 315.5ms TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 10:41:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-27 10:41:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2021-08-27 10:41:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-08-27 10:41:17,491 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2021-08-27 10:41:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:17,492 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-08-27 10:41:17,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-08-27 10:41:17,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-27 10:41:17,494 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:17,495 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:17,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:17,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-27 10:41:17,709 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:17,709 INFO L82 PathProgramCache]: Analyzing trace with hash 2041056831, now seen corresponding path program 11 times [2021-08-27 10:41:17,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:17,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122363091] [2021-08-27 10:41:17,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:17,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:17,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:17,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122363091] [2021-08-27 10:41:17,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122363091] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:17,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398296052] [2021-08-27 10:41:17,992 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:41:17,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:17,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:17,993 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:17,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-27 10:41:18,181 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-08-27 10:41:18,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:18,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-27 10:41:18,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:18,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398296052] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:18,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:18,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-08-27 10:41:18,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118349444] [2021-08-27 10:41:18,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-27 10:41:18,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:18,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-27 10:41:18,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-08-27 10:41:18,402 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:18,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:18,612 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-08-27 10:41:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-27 10:41:18,613 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-08-27 10:41:18,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:18,614 INFO L225 Difference]: With dead ends: 66 [2021-08-27 10:41:18,614 INFO L226 Difference]: Without dead ends: 60 [2021-08-27 10:41:18,614 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 332.9ms TimeCoverageRelationStatistics Valid=417, Invalid=989, Unknown=0, NotChecked=0, Total=1406 [2021-08-27 10:41:18,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-08-27 10:41:18,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-08-27 10:41:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.0545454545454545) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:18,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-08-27 10:41:18,618 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2021-08-27 10:41:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:18,618 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-08-27 10:41:18,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-08-27 10:41:18,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-27 10:41:18,619 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:18,620 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:18,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:18,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-27 10:41:18,837 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:18,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:18,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1615882429, now seen corresponding path program 12 times [2021-08-27 10:41:18,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:18,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31009963] [2021-08-27 10:41:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:18,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:19,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:19,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31009963] [2021-08-27 10:41:19,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31009963] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:19,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279765399] [2021-08-27 10:41:19,155 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:41:19,155 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:19,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:19,156 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:19,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-27 10:41:19,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-08-27 10:41:19,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:19,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 10:41:19,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:19,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279765399] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:19,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:19,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-08-27 10:41:19,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967344492] [2021-08-27 10:41:19,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-08-27 10:41:19,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:19,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-08-27 10:41:19,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-08-27 10:41:19,672 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:19,895 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-08-27 10:41:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-27 10:41:19,896 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-08-27 10:41:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:19,896 INFO L225 Difference]: With dead ends: 70 [2021-08-27 10:41:19,896 INFO L226 Difference]: Without dead ends: 64 [2021-08-27 10:41:19,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 401.5ms TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2021-08-27 10:41:19,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-27 10:41:19,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2021-08-27 10:41:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-08-27 10:41:19,910 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 54 [2021-08-27 10:41:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:19,910 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-08-27 10:41:19,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:19,911 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-08-27 10:41:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 10:41:19,911 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:19,911 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:19,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:20,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-27 10:41:20,125 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:20,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:20,125 INFO L82 PathProgramCache]: Analyzing trace with hash -184353209, now seen corresponding path program 13 times [2021-08-27 10:41:20,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:20,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865709283] [2021-08-27 10:41:20,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:20,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:20,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:20,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865709283] [2021-08-27 10:41:20,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865709283] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:20,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784419054] [2021-08-27 10:41:20,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 10:41:20,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:20,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:20,508 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:20,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-27 10:41:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:20,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-27 10:41:20,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:20,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784419054] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:20,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:20,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-08-27 10:41:20,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588228500] [2021-08-27 10:41:20,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-08-27 10:41:20,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:20,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-08-27 10:41:20,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-08-27 10:41:20,930 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:21,155 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2021-08-27 10:41:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-27 10:41:21,156 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-27 10:41:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:21,156 INFO L225 Difference]: With dead ends: 74 [2021-08-27 10:41:21,156 INFO L226 Difference]: Without dead ends: 68 [2021-08-27 10:41:21,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 441.7ms TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2021-08-27 10:41:21,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-08-27 10:41:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2021-08-27 10:41:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-08-27 10:41:21,159 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 58 [2021-08-27 10:41:21,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:21,159 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-08-27 10:41:21,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:21,160 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-08-27 10:41:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-27 10:41:21,160 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:21,160 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:21,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:21,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:21,371 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:21,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:21,371 INFO L82 PathProgramCache]: Analyzing trace with hash 344146763, now seen corresponding path program 14 times [2021-08-27 10:41:21,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:21,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562562622] [2021-08-27 10:41:21,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:21,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:21,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:21,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562562622] [2021-08-27 10:41:21,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562562622] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:21,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725351670] [2021-08-27 10:41:21,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 10:41:21,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:21,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:21,775 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:21,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-27 10:41:22,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 10:41:22,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:22,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-27 10:41:22,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:22,254 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:22,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725351670] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:22,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:22,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-08-27 10:41:22,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371417614] [2021-08-27 10:41:22,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-08-27 10:41:22,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:22,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-08-27 10:41:22,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2021-08-27 10:41:22,257 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:22,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:22,505 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2021-08-27 10:41:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-27 10:41:22,505 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-27 10:41:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:22,506 INFO L225 Difference]: With dead ends: 78 [2021-08-27 10:41:22,506 INFO L226 Difference]: Without dead ends: 72 [2021-08-27 10:41:22,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 508.9ms TimeCoverageRelationStatistics Valid=633, Invalid=1529, Unknown=0, NotChecked=0, Total=2162 [2021-08-27 10:41:22,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-27 10:41:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2021-08-27 10:41:22,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.044776119402985) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-08-27 10:41:22,509 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 62 [2021-08-27 10:41:22,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:22,509 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-08-27 10:41:22,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:22,509 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-08-27 10:41:22,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-27 10:41:22,510 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:22,510 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:22,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-08-27 10:41:22,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-27 10:41:22,710 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:22,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:22,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1083270735, now seen corresponding path program 15 times [2021-08-27 10:41:22,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:22,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434103485] [2021-08-27 10:41:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:22,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:23,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:23,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434103485] [2021-08-27 10:41:23,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434103485] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:23,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613269405] [2021-08-27 10:41:23,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 10:41:23,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:23,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:23,131 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:23,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-27 10:41:23,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-08-27 10:41:23,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:23,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-27 10:41:23,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:23,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613269405] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:23,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:23,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-08-27 10:41:23,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863346366] [2021-08-27 10:41:23,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-27 10:41:23,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:23,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-27 10:41:23,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-08-27 10:41:23,799 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:24,108 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2021-08-27 10:41:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-27 10:41:24,109 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-08-27 10:41:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:24,109 INFO L225 Difference]: With dead ends: 82 [2021-08-27 10:41:24,110 INFO L226 Difference]: Without dead ends: 76 [2021-08-27 10:41:24,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 553.6ms TimeCoverageRelationStatistics Valid=715, Invalid=1735, Unknown=0, NotChecked=0, Total=2450 [2021-08-27 10:41:24,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-08-27 10:41:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2021-08-27 10:41:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-08-27 10:41:24,113 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 66 [2021-08-27 10:41:24,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:24,113 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-08-27 10:41:24,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0285714285714285) internal successors, (71), 35 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-08-27 10:41:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-08-27 10:41:24,114 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:24,114 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:24,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:24,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-27 10:41:24,329 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:24,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:24,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1559337133, now seen corresponding path program 16 times [2021-08-27 10:41:24,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:24,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713199808] [2021-08-27 10:41:24,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:24,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:24,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:24,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713199808] [2021-08-27 10:41:24,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713199808] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:24,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81331261] [2021-08-27 10:41:24,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 10:41:24,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:24,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:24,821 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:24,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-27 10:41:25,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 10:41:25,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:25,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-27 10:41:25,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:25,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81331261] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:25,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:25,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-08-27 10:41:25,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669629778] [2021-08-27 10:41:25,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-08-27 10:41:25,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:25,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-08-27 10:41:25,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-08-27 10:41:25,398 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 37 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:25,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:25,715 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-08-27 10:41:25,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-27 10:41:25,716 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 37 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-08-27 10:41:25,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:25,716 INFO L225 Difference]: With dead ends: 86 [2021-08-27 10:41:25,717 INFO L226 Difference]: Without dead ends: 80 [2021-08-27 10:41:25,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 611.6ms TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2021-08-27 10:41:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-27 10:41:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2021-08-27 10:41:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.04) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2021-08-27 10:41:25,721 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 70 [2021-08-27 10:41:25,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:25,721 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2021-08-27 10:41:25,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.027027027027027) internal successors, (75), 37 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:25,721 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2021-08-27 10:41:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-08-27 10:41:25,722 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:25,722 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:25,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:25,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:25,941 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:25,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:25,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1923398057, now seen corresponding path program 17 times [2021-08-27 10:41:25,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:25,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7706033] [2021-08-27 10:41:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:25,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:26,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:26,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7706033] [2021-08-27 10:41:26,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7706033] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:26,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065778903] [2021-08-27 10:41:26,491 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 10:41:26,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:26,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:26,492 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:26,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-27 10:41:26,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-08-27 10:41:26,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:26,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-27 10:41:26,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:27,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065778903] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:27,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:27,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-08-27 10:41:27,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985096222] [2021-08-27 10:41:27,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-08-27 10:41:27,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:27,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-08-27 10:41:27,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-08-27 10:41:27,143 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 39 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:27,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:27,510 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2021-08-27 10:41:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-27 10:41:27,511 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 39 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-08-27 10:41:27,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:27,511 INFO L225 Difference]: With dead ends: 90 [2021-08-27 10:41:27,511 INFO L226 Difference]: Without dead ends: 84 [2021-08-27 10:41:27,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 698.5ms TimeCoverageRelationStatistics Valid=894, Invalid=2186, Unknown=0, NotChecked=0, Total=3080 [2021-08-27 10:41:27,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-27 10:41:27,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2021-08-27 10:41:27,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-08-27 10:41:27,514 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2021-08-27 10:41:27,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:27,515 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-08-27 10:41:27,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 39 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:27,515 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-08-27 10:41:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-08-27 10:41:27,515 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:27,515 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:27,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:27,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:27,729 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:27,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:27,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1202125989, now seen corresponding path program 18 times [2021-08-27 10:41:27,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:27,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521020034] [2021-08-27 10:41:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:27,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:28,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:28,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521020034] [2021-08-27 10:41:28,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521020034] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:28,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105635146] [2021-08-27 10:41:28,275 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 10:41:28,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:28,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 10:41:28,276 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 10:41:28,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-27 10:41:28,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-08-27 10:41:28,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 10:41:28,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 61 conjunts are in the unsatisfiable core [2021-08-27 10:41:28,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 10:41:29,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-08-27 10:41:29,153 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-27 10:41:29,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-08-27 10:41:29,254 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-27 10:41:29,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-08-27 10:41:29,362 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-27 10:41:29,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-08-27 10:41:29,468 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-27 10:41:29,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-08-27 10:41:29,578 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-27 10:41:29,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-08-27 10:41:29,693 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-27 10:41:29,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-08-27 10:41:29,818 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-27 10:41:29,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-08-27 10:41:29,943 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-08-27 10:41:29,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-08-27 10:41:30,013 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-08-27 10:41:30,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2021-08-27 10:41:30,239 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-08-27 10:41:30,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-08-27 10:41:30,391 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-08-27 10:41:30,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-08-27 10:41:30,539 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-08-27 10:41:30,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-08-27 10:41:30,686 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-08-27 10:41:30,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-08-27 10:41:30,836 INFO L354 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2021-08-27 10:41:30,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2021-08-27 10:41:30,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-08-27 10:41:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 105 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 10:41:31,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105635146] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 10:41:31,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 10:41:31,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 76 [2021-08-27 10:41:31,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152303453] [2021-08-27 10:41:31,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-08-27 10:41:31,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:31,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-08-27 10:41:31,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1032, Invalid=4668, Unknown=0, NotChecked=0, Total=5700 [2021-08-27 10:41:31,044 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 76 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:32,178 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2021-08-27 10:41:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-27 10:41:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 76 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-08-27 10:41:32,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:32,179 INFO L225 Difference]: With dead ends: 93 [2021-08-27 10:41:32,179 INFO L226 Difference]: Without dead ends: 87 [2021-08-27 10:41:32,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 2331.6ms TimeCoverageRelationStatistics Valid=2505, Invalid=9927, Unknown=0, NotChecked=0, Total=12432 [2021-08-27 10:41:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-08-27 10:41:32,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2021-08-27 10:41:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2021-08-27 10:41:32,184 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 78 [2021-08-27 10:41:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:32,184 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2021-08-27 10:41:32,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 76 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2021-08-27 10:41:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-08-27 10:41:32,185 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 10:41:32,185 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 10:41:32,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-27 10:41:32,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 10:41:32,393 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-27 10:41:32,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 10:41:32,393 INFO L82 PathProgramCache]: Analyzing trace with hash 145436095, now seen corresponding path program 1 times [2021-08-27 10:41:32,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 10:41:32,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130928063] [2021-08-27 10:41:32,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 10:41:32,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 10:41:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 10:41:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2021-08-27 10:41:32,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 10:41:32,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130928063] [2021-08-27 10:41:32,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130928063] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 10:41:32,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 10:41:32,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 10:41:32,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180829914] [2021-08-27 10:41:32,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 10:41:32,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 10:41:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 10:41:32,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:41:32,425 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 10:41:32,434 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-08-27 10:41:32,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 10:41:32,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-08-27 10:41:32,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 10:41:32,435 INFO L225 Difference]: With dead ends: 84 [2021-08-27 10:41:32,435 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 10:41:32,436 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 10:41:32,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 10:41:32,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 10:41:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 10:41:32,437 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2021-08-27 10:41:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 10:41:32,437 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 10:41:32,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 10:41:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 10:41:32,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 10:41:32,440 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:32,440 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:32,441 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:32,441 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 10:41:32,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-27 10:41:32,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 10:41:32,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:41:32,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 10:41:32,538 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2021-08-27 10:41:32,538 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 10:41:32,538 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-08-27 10:41:32,538 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 19) no Hoare annotation was computed. [2021-08-27 10:41:32,538 INFO L857 garLoopResultBuilder]: For program point L17-2(lines 10 21) no Hoare annotation was computed. [2021-08-27 10:41:32,538 INFO L857 garLoopResultBuilder]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2021-08-27 10:41:32,538 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2021-08-27 10:41:32,538 INFO L857 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-08-27 10:41:32,538 INFO L857 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2021-08-27 10:41:32,539 INFO L853 garLoopResultBuilder]: At program point L13-5(lines 13 15) the Hoare annotation is: (or (and (<= 4 ULTIMATE.start_main_~i~0) (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|) (+ |ULTIMATE.start_main_~#a~0.offset| 12)) 2147483647)) (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~i~0 1) (= ULTIMATE.start_main_~i~0 2) (= ULTIMATE.start_main_~i~0 3)) [2021-08-27 10:41:32,539 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-27 10:41:32,539 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2021-08-27 10:41:32,539 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-08-27 10:41:32,539 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 10:41:32,539 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 10:41:32,539 INFO L860 garLoopResultBuilder]: At program point L20(lines 10 21) the Hoare annotation is: true [2021-08-27 10:41:32,539 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-08-27 10:41:32,539 INFO L857 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-08-27 10:41:32,543 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 10:41:32,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:41:32 BoogieIcfgContainer [2021-08-27 10:41:32,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 10:41:32,553 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 10:41:32,553 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 10:41:32,553 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 10:41:32,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:41:09" (3/4) ... [2021-08-27 10:41:32,556 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 10:41:32,562 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-08-27 10:41:32,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-08-27 10:41:32,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 10:41:32,585 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 10:41:32,585 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 10:41:32,586 INFO L168 Benchmark]: Toolchain (without parser) took 23901.39 ms. Allocated memory was 60.8 MB in the beginning and 237.0 MB in the end (delta: 176.2 MB). Free memory was 38.9 MB in the beginning and 159.9 MB in the end (delta: -121.1 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:32,586 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 41.6 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 10:41:32,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.73 ms. Allocated memory is still 60.8 MB. Free memory was 38.7 MB in the beginning and 29.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:32,587 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.51 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 44.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:32,587 INFO L168 Benchmark]: Boogie Preprocessor took 42.64 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 42.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:32,587 INFO L168 Benchmark]: RCFGBuilder took 368.48 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 31.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:32,588 INFO L168 Benchmark]: TraceAbstraction took 23266.72 ms. Allocated memory was 60.8 MB in the beginning and 237.0 MB in the end (delta: 176.2 MB). Free memory was 31.0 MB in the beginning and 162.0 MB in the end (delta: -131.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:32,588 INFO L168 Benchmark]: Witness Printer took 32.80 ms. Allocated memory is still 237.0 MB. Free memory was 162.0 MB in the beginning and 159.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 10:41:32,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 41.6 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 151.73 ms. Allocated memory is still 60.8 MB. Free memory was 38.7 MB in the beginning and 29.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.51 ms. Allocated memory is still 60.8 MB. Free memory was 29.8 MB in the beginning and 44.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.64 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 42.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 368.48 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 31.5 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23266.72 ms. Allocated memory was 60.8 MB in the beginning and 237.0 MB in the end (delta: 176.2 MB). Free memory was 31.0 MB in the beginning and 162.0 MB in the end (delta: -131.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. * Witness Printer took 32.80 ms. Allocated memory is still 237.0 MB. Free memory was 162.0 MB in the beginning and 159.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 23196.0ms, OverallIterations: 22, TraceHistogramMax: 19, EmptinessCheckTime: 27.8ms, AutomataDifference: 4382.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 96.3ms, InitialAbstractionConstructionTime: 20.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 196 SDtfs, 1189 SDslu, 762 SDs, 0 SdLazy, 1895 SolverSat, 175 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1148.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1387 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 636 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6952 ImplicationChecksByTransitivity, 7542.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=21, InterpolantAutomatonStates: 419, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 112.3ms AutomataMinimizationTime, 22 MinimizatonAttempts, 55 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 22 NumberOfFragments, 27 HoareAnnotationTreeSize, 2 FomulaSimplifications, 168 FormulaSimplificationTreeSizeReduction, 32.5ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 188 FormulaSimplificationTreeSizeReductionInter, 57.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 205.5ms SsaConstructionTime, 1216.2ms SatisfiabilityAnalysisTime, 10215.7ms InterpolantComputationTime, 1701 NumberOfCodeBlocks, 1697 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 1660 ConstructedInterpolants, 0 QuantifiedInterpolants, 5128 SizeOfPredicates, 176 NumberOfNonLiveVariables, 2186 ConjunctsInSsa, 405 ConjunctsInUnsatCore, 41 InterpolantComputations, 4 PerfectInterpolantSequences, 815/8808 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: ((((4 <= i && unknown-#memory_int-unknown[a][a + 12] <= 2147483647) || i == 0) || i == 1) || i == 2) || i == 3 RESULT: Ultimate proved your program to be correct! [2021-08-27 10:41:32,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...