./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 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-lit/Avery-FLOPS2006-Table1.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 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 14:45:04,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 14:45:04,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 14:45:04,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 14:45:04,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 14:45:04,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 14:45:04,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 14:45:04,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 14:45:04,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 14:45:04,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 14:45:04,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 14:45:04,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 14:45:04,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 14:45:04,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 14:45:04,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 14:45:04,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 14:45:04,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 14:45:04,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 14:45:04,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 14:45:04,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 14:45:04,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 14:45:04,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 14:45:04,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 14:45:04,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 14:45:04,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 14:45:04,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 14:45:04,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 14:45:04,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 14:45:04,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 14:45:04,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 14:45:04,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 14:45:04,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 14:45:04,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 14:45:04,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 14:45:04,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 14:45:04,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 14:45:04,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 14:45:04,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 14:45:04,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 14:45:04,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 14:45:04,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 14:45:04,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-19 14:45:04,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 14:45:04,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 14:45:04,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 14:45:04,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 14:45:04,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 14:45:04,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 14:45:04,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 14:45:04,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 14:45:04,937 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 14:45:04,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 14:45:04,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 14:45:04,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 14:45:04,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 14:45:04,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 14:45:04,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 14:45:04,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 14:45:04,937 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 14:45:04,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 14:45:04,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 14:45:04,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 14:45:04,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 14:45:04,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 14:45:04,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 14:45:04,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 14:45:04,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 14:45:04,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 14:45:04,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 14:45:04,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 14:45:04,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 14:45:04,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 14:45:04,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 14:45:04,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 [2021-12-19 14:45:05,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 14:45:05,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 14:45:05,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 14:45:05,166 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 14:45:05,166 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 14:45:05,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2021-12-19 14:45:05,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63a216b5/6df0c937190c4c7b8d697cdb25f51913/FLAGaa7b1034c [2021-12-19 14:45:05,585 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 14:45:05,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2021-12-19 14:45:05,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63a216b5/6df0c937190c4c7b8d697cdb25f51913/FLAGaa7b1034c [2021-12-19 14:45:05,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63a216b5/6df0c937190c4c7b8d697cdb25f51913 [2021-12-19 14:45:05,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 14:45:05,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 14:45:05,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 14:45:05,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 14:45:05,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 14:45:05,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4642e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05, skipping insertion in model container [2021-12-19 14:45:05,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 14:45:05,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 14:45:05,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 14:45:05,723 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 14:45:05,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 14:45:05,741 INFO L208 MainTranslator]: Completed translation [2021-12-19 14:45:05,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05 WrapperNode [2021-12-19 14:45:05,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 14:45:05,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 14:45:05,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 14:45:05,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 14:45:05,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,766 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-12-19 14:45:05,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 14:45:05,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 14:45:05,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 14:45:05,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 14:45:05,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 14:45:05,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 14:45:05,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 14:45:05,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 14:45:05,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05" (1/1) ... [2021-12-19 14:45:05,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 14:45:05,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:05,833 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) [2021-12-19 14:45:05,838 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 [2021-12-19 14:45:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 14:45:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 14:45:05,901 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 14:45:05,902 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 14:45:05,980 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 14:45:05,989 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 14:45:05,990 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 14:45:05,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:45:05 BoogieIcfgContainer [2021-12-19 14:45:05,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 14:45:05,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 14:45:05,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 14:45:05,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 14:45:05,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:45:05" (1/3) ... [2021-12-19 14:45:05,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e93bcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:45:05, skipping insertion in model container [2021-12-19 14:45:05,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:45:05" (2/3) ... [2021-12-19 14:45:05,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e93bcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:45:05, skipping insertion in model container [2021-12-19 14:45:05,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:45:05" (3/3) ... [2021-12-19 14:45:05,997 INFO L111 eAbstractionObserver]: Analyzing ICFG Avery-FLOPS2006-Table1.c [2021-12-19 14:45:06,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 14:45:06,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-19 14:45:06,058 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 14:45:06,063 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, mAutomataTypeConcurrency=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 [2021-12-19 14:45:06,063 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-19 14:45:06,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 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) [2021-12-19 14:45:06,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-19 14:45:06,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:06,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-19 14:45:06,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:06,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:06,088 INFO L85 PathProgramCache]: Analyzing trace with hash 28693987, now seen corresponding path program 1 times [2021-12-19 14:45:06,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:06,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776075797] [2021-12-19 14:45:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:06,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:06,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:06,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776075797] [2021-12-19 14:45:06,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776075797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:45:06,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:45:06,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 14:45:06,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574625841] [2021-12-19 14:45:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:45:06,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 14:45:06,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:06,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 14:45:06,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:45:06,307 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 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) [2021-12-19 14:45:06,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:06,416 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2021-12-19 14:45:06,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 14:45:06,418 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 [2021-12-19 14:45:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:06,424 INFO L225 Difference]: With dead ends: 58 [2021-12-19 14:45:06,424 INFO L226 Difference]: Without dead ends: 32 [2021-12-19 14:45:06,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:45:06,433 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:06,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 36 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 14:45:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-19 14:45:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2021-12-19 14:45:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 19 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) [2021-12-19 14:45:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-12-19 14:45:06,461 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 5 [2021-12-19 14:45:06,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:06,461 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-12-19 14:45:06,461 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) [2021-12-19 14:45:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-12-19 14:45:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-19 14:45:06,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:06,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-19 14:45:06,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 14:45:06,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:06,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:06,466 INFO L85 PathProgramCache]: Analyzing trace with hash 889512267, now seen corresponding path program 1 times [2021-12-19 14:45:06,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:06,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060410827] [2021-12-19 14:45:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:06,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:06,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:06,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060410827] [2021-12-19 14:45:06,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060410827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:45:06,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:45:06,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 14:45:06,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766000041] [2021-12-19 14:45:06,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:45:06,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 14:45:06,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 14:45:06,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:45:06,531 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-19 14:45:06,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:06,570 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-12-19 14:45:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 14:45:06,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-12-19 14:45:06,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:06,571 INFO L225 Difference]: With dead ends: 32 [2021-12-19 14:45:06,571 INFO L226 Difference]: Without dead ends: 22 [2021-12-19 14:45:06,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 14:45:06,573 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:06,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:45:06,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-19 14:45:06,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-12-19 14:45:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 19 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) [2021-12-19 14:45:06,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-12-19 14:45:06,580 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2021-12-19 14:45:06,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:06,580 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-12-19 14:45:06,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-19 14:45:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-12-19 14:45:06,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-19 14:45:06,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:06,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:06,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-19 14:45:06,582 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:06,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:06,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1805119269, now seen corresponding path program 1 times [2021-12-19 14:45:06,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:06,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872244369] [2021-12-19 14:45:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:06,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:06,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:06,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872244369] [2021-12-19 14:45:06,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872244369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:45:06,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:45:06,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 14:45:06,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768935423] [2021-12-19 14:45:06,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:45:06,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 14:45:06,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:06,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 14:45:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 14:45:06,623 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-19 14:45:06,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:06,634 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-12-19 14:45:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 14:45:06,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-12-19 14:45:06,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:06,635 INFO L225 Difference]: With dead ends: 25 [2021-12-19 14:45:06,635 INFO L226 Difference]: Without dead ends: 24 [2021-12-19 14:45:06,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 14:45:06,636 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:06,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:45:06,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-19 14:45:06,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-12-19 14:45:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 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) [2021-12-19 14:45:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-12-19 14:45:06,640 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2021-12-19 14:45:06,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:06,640 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-12-19 14:45:06,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-12-19 14:45:06,641 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-12-19 14:45:06,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-19 14:45:06,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:06,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:06,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-19 14:45:06,642 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:06,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:06,642 INFO L85 PathProgramCache]: Analyzing trace with hash 124122543, now seen corresponding path program 1 times [2021-12-19 14:45:06,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:06,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353819526] [2021-12-19 14:45:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:06,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:06,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:06,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353819526] [2021-12-19 14:45:06,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353819526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:45:06,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:45:06,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 14:45:06,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930498889] [2021-12-19 14:45:06,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:45:06,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 14:45:06,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:06,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 14:45:06,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 14:45:06,677 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-19 14:45:06,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:06,688 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-12-19 14:45:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 14:45:06,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-12-19 14:45:06,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:06,689 INFO L225 Difference]: With dead ends: 31 [2021-12-19 14:45:06,689 INFO L226 Difference]: Without dead ends: 29 [2021-12-19 14:45:06,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 14:45:06,691 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:06,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:45:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-19 14:45:06,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-12-19 14:45:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 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) [2021-12-19 14:45:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-12-19 14:45:06,695 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2021-12-19 14:45:06,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:06,695 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-12-19 14:45:06,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-19 14:45:06,695 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-12-19 14:45:06,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-19 14:45:06,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:06,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:06,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-19 14:45:06,696 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:06,697 INFO L85 PathProgramCache]: Analyzing trace with hash -232120963, now seen corresponding path program 1 times [2021-12-19 14:45:06,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:06,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368116092] [2021-12-19 14:45:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:06,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 14:45:06,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:06,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368116092] [2021-12-19 14:45:06,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368116092] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:45:06,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:45:06,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 14:45:06,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995649641] [2021-12-19 14:45:06,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:45:06,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 14:45:06,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:06,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 14:45:06,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 14:45:06,717 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2021-12-19 14:45:06,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:06,731 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-12-19 14:45:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 14:45:06,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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 11 [2021-12-19 14:45:06,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:06,732 INFO L225 Difference]: With dead ends: 28 [2021-12-19 14:45:06,733 INFO L226 Difference]: Without dead ends: 27 [2021-12-19 14:45:06,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 14:45:06,734 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:06,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:45:06,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-19 14:45:06,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-19 14:45:06,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 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) [2021-12-19 14:45:06,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-19 14:45:06,744 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 11 [2021-12-19 14:45:06,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:06,744 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-19 14:45:06,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 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) [2021-12-19 14:45:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-12-19 14:45:06,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-19 14:45:06,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:06,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:06,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-19 14:45:06,746 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:06,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:06,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1394184806, now seen corresponding path program 1 times [2021-12-19 14:45:06,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:06,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119950860] [2021-12-19 14:45:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:06,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:06,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:06,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119950860] [2021-12-19 14:45:06,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119950860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:45:06,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:45:06,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 14:45:06,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497091530] [2021-12-19 14:45:06,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:45:06,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 14:45:06,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:06,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 14:45:06,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:45:06,806 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-19 14:45:06,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:06,825 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-12-19 14:45:06,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 14:45:06,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-12-19 14:45:06,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:06,826 INFO L225 Difference]: With dead ends: 27 [2021-12-19 14:45:06,826 INFO L226 Difference]: Without dead ends: 26 [2021-12-19 14:45:06,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:45:06,829 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:06,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:45:06,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-19 14:45:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-19 14:45:06,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 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) [2021-12-19 14:45:06,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-12-19 14:45:06,839 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2021-12-19 14:45:06,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:06,840 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-12-19 14:45:06,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-19 14:45:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-12-19 14:45:06,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-19 14:45:06,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:06,841 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:06,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-19 14:45:06,842 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:06,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:06,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1394227507, now seen corresponding path program 1 times [2021-12-19 14:45:06,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:06,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497681463] [2021-12-19 14:45:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:06,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:06,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:06,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497681463] [2021-12-19 14:45:06,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497681463] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:06,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195180171] [2021-12-19 14:45:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:06,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:06,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:06,882 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) [2021-12-19 14:45:06,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 14:45:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:06,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 14:45:06,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:06,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:07,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195180171] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:07,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:07,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-19 14:45:07,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991365658] [2021-12-19 14:45:07,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:07,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 14:45:07,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:07,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 14:45:07,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 14:45:07,017 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2021-12-19 14:45:07,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:07,065 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2021-12-19 14:45:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 14:45:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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 12 [2021-12-19 14:45:07,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:07,068 INFO L225 Difference]: With dead ends: 70 [2021-12-19 14:45:07,068 INFO L226 Difference]: Without dead ends: 68 [2021-12-19 14:45:07,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 14:45:07,069 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 46 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:07,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 49 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:45:07,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-19 14:45:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51. [2021-12-19 14:45:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 50 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) [2021-12-19 14:45:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-12-19 14:45:07,085 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 12 [2021-12-19 14:45:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:07,086 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-12-19 14:45:07,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2021-12-19 14:45:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-12-19 14:45:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-19 14:45:07,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:07,087 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:07,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-19 14:45:07,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:07,308 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:07,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash 767450986, now seen corresponding path program 1 times [2021-12-19 14:45:07,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:07,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564205200] [2021-12-19 14:45:07,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:07,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 14:45:07,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:07,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564205200] [2021-12-19 14:45:07,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564205200] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:07,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455268776] [2021-12-19 14:45:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:07,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:07,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:07,331 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) [2021-12-19 14:45:07,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 14:45:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:07,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 14:45:07,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 14:45:07,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 14:45:07,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455268776] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:07,431 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:07,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-19 14:45:07,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419162148] [2021-12-19 14:45:07,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:07,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 14:45:07,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:07,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 14:45:07,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 14:45:07,434 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-12-19 14:45:07,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:07,466 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2021-12-19 14:45:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 14:45:07,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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 16 [2021-12-19 14:45:07,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:07,470 INFO L225 Difference]: With dead ends: 81 [2021-12-19 14:45:07,470 INFO L226 Difference]: Without dead ends: 80 [2021-12-19 14:45:07,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 14:45:07,472 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:07,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 46 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:45:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-19 14:45:07,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2021-12-19 14:45:07,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 74 states have internal predecessors, (88), 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) [2021-12-19 14:45:07,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2021-12-19 14:45:07,476 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 16 [2021-12-19 14:45:07,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:07,476 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2021-12-19 14:45:07,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-12-19 14:45:07,476 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2021-12-19 14:45:07,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-19 14:45:07,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:07,477 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:07,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-19 14:45:07,679 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,SelfDestructingSolverStorable7 [2021-12-19 14:45:07,680 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:07,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:07,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1021473915, now seen corresponding path program 1 times [2021-12-19 14:45:07,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:07,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169188962] [2021-12-19 14:45:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:07,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:07,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:07,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169188962] [2021-12-19 14:45:07,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169188962] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:07,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137406667] [2021-12-19 14:45:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:07,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:07,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:07,710 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) [2021-12-19 14:45:07,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-19 14:45:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:07,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 14:45:07,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:07,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:07,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137406667] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:07,820 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:07,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-19 14:45:07,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970846578] [2021-12-19 14:45:07,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:07,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 14:45:07,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:07,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 14:45:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 14:45:07,821 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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) [2021-12-19 14:45:07,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:07,844 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2021-12-19 14:45:07,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 14:45:07,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 19 [2021-12-19 14:45:07,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:07,845 INFO L225 Difference]: With dead ends: 82 [2021-12-19 14:45:07,845 INFO L226 Difference]: Without dead ends: 81 [2021-12-19 14:45:07,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 14:45:07,846 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:07,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 35 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:45:07,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-19 14:45:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-12-19 14:45:07,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 80 states have internal predecessors, (91), 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) [2021-12-19 14:45:07,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2021-12-19 14:45:07,850 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 19 [2021-12-19 14:45:07,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:07,850 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2021-12-19 14:45:07,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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) [2021-12-19 14:45:07,850 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2021-12-19 14:45:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-19 14:45:07,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:07,851 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-12-19 14:45:07,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-19 14:45:08,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:08,062 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:08,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:08,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1125896027, now seen corresponding path program 2 times [2021-12-19 14:45:08,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:08,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806526721] [2021-12-19 14:45:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:08,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:08,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:08,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806526721] [2021-12-19 14:45:08,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806526721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:08,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201514384] [2021-12-19 14:45:08,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 14:45:08,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:08,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:08,136 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) [2021-12-19 14:45:08,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-19 14:45:08,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 14:45:08,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:45:08,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 14:45:08,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:08,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:08,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201514384] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:08,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:08,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-19 14:45:08,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367952498] [2021-12-19 14:45:08,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:08,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-19 14:45:08,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:08,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-19 14:45:08,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-19 14:45:08,319 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 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) [2021-12-19 14:45:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:08,383 INFO L93 Difference]: Finished difference Result 240 states and 282 transitions. [2021-12-19 14:45:08,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-19 14:45:08,383 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 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 27 [2021-12-19 14:45:08,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:08,384 INFO L225 Difference]: With dead ends: 240 [2021-12-19 14:45:08,384 INFO L226 Difference]: Without dead ends: 238 [2021-12-19 14:45:08,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-19 14:45:08,385 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 141 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:08,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 94 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 14:45:08,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-12-19 14:45:08,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 111. [2021-12-19 14:45:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 110 states have internal predecessors, (127), 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) [2021-12-19 14:45:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2021-12-19 14:45:08,390 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 27 [2021-12-19 14:45:08,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:08,390 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2021-12-19 14:45:08,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 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) [2021-12-19 14:45:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2021-12-19 14:45:08,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-19 14:45:08,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:08,391 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:08,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-19 14:45:08,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:08,598 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:08,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:08,598 INFO L85 PathProgramCache]: Analyzing trace with hash -787231299, now seen corresponding path program 2 times [2021-12-19 14:45:08,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:08,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699882720] [2021-12-19 14:45:08,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:08,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-19 14:45:08,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:08,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699882720] [2021-12-19 14:45:08,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699882720] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:08,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784466132] [2021-12-19 14:45:08,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 14:45:08,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:08,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:08,624 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) [2021-12-19 14:45:08,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-19 14:45:08,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-19 14:45:08,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:45:08,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 14:45:08,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-19 14:45:08,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-19 14:45:08,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784466132] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:08,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:08,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2021-12-19 14:45:08,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014168167] [2021-12-19 14:45:08,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:08,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 14:45:08,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:08,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 14:45:08,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:45:08,752 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-12-19 14:45:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:08,764 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2021-12-19 14:45:08,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 14:45:08,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 31 [2021-12-19 14:45:08,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:08,766 INFO L225 Difference]: With dead ends: 111 [2021-12-19 14:45:08,767 INFO L226 Difference]: Without dead ends: 110 [2021-12-19 14:45:08,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 14:45:08,767 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:08,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:45:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-19 14:45:08,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-12-19 14:45:08,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 109 states have internal predecessors, (125), 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) [2021-12-19 14:45:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-12-19 14:45:08,780 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 31 [2021-12-19 14:45:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:08,780 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-12-19 14:45:08,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-12-19 14:45:08,781 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-12-19 14:45:08,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-19 14:45:08,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:08,784 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:08,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-19 14:45:08,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-19 14:45:08,992 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:08,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:08,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1886125752, now seen corresponding path program 2 times [2021-12-19 14:45:08,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:08,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742131501] [2021-12-19 14:45:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:08,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:09,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:09,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742131501] [2021-12-19 14:45:09,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742131501] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:09,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115441646] [2021-12-19 14:45:09,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 14:45:09,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:09,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:09,052 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) [2021-12-19 14:45:09,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-19 14:45:09,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 14:45:09,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:45:09,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 14:45:09,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:09,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:09,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115441646] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:09,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:09,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-19 14:45:09,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196692903] [2021-12-19 14:45:09,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:09,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-19 14:45:09,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-19 14:45:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-19 14:45:09,244 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 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) [2021-12-19 14:45:09,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:09,298 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2021-12-19 14:45:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-19 14:45:09,298 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 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 34 [2021-12-19 14:45:09,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:09,299 INFO L225 Difference]: With dead ends: 171 [2021-12-19 14:45:09,299 INFO L226 Difference]: Without dead ends: 170 [2021-12-19 14:45:09,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-19 14:45:09,300 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:09,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 51 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:45:09,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-19 14:45:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-19 14:45:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 167 states have (on average 1.1437125748502994) internal successors, (191), 169 states have internal predecessors, (191), 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) [2021-12-19 14:45:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 191 transitions. [2021-12-19 14:45:09,310 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 191 transitions. Word has length 34 [2021-12-19 14:45:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:09,311 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 191 transitions. [2021-12-19 14:45:09,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 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) [2021-12-19 14:45:09,311 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 191 transitions. [2021-12-19 14:45:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-19 14:45:09,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:09,314 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-12-19 14:45:09,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-19 14:45:09,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:09,528 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:09,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:09,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1693125349, now seen corresponding path program 3 times [2021-12-19 14:45:09,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:09,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128333654] [2021-12-19 14:45:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:09,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:09,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:09,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128333654] [2021-12-19 14:45:09,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128333654] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:09,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148847222] [2021-12-19 14:45:09,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 14:45:09,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:09,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:09,639 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) [2021-12-19 14:45:09,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-19 14:45:09,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-19 14:45:09,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:45:09,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-19 14:45:09,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:09,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:09,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148847222] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:09,978 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:09,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-19 14:45:09,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911355452] [2021-12-19 14:45:09,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:09,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-19 14:45:09,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-19 14:45:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-19 14:45:09,979 INFO L87 Difference]: Start difference. First operand 170 states and 191 transitions. Second operand has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 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) [2021-12-19 14:45:10,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:10,143 INFO L93 Difference]: Finished difference Result 837 states and 959 transitions. [2021-12-19 14:45:10,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-19 14:45:10,143 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 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 57 [2021-12-19 14:45:10,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:10,147 INFO L225 Difference]: With dead ends: 837 [2021-12-19 14:45:10,147 INFO L226 Difference]: Without dead ends: 835 [2021-12-19 14:45:10,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-19 14:45:10,148 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 333 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:10,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 171 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 14:45:10,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-12-19 14:45:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 230. [2021-12-19 14:45:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 227 states have (on average 1.158590308370044) internal successors, (263), 229 states have internal predecessors, (263), 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) [2021-12-19 14:45:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 263 transitions. [2021-12-19 14:45:10,156 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 263 transitions. Word has length 57 [2021-12-19 14:45:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:10,157 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 263 transitions. [2021-12-19 14:45:10,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 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) [2021-12-19 14:45:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 263 transitions. [2021-12-19 14:45:10,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-19 14:45:10,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:10,158 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:10,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-19 14:45:10,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:10,375 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:10,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash 516196584, now seen corresponding path program 3 times [2021-12-19 14:45:10,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:10,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098058031] [2021-12-19 14:45:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:10,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:10,457 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:10,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:10,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098058031] [2021-12-19 14:45:10,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098058031] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:10,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986697439] [2021-12-19 14:45:10,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 14:45:10,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:10,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:10,459 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) [2021-12-19 14:45:10,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-19 14:45:10,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-19 14:45:10,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:45:10,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-19 14:45:10,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:10,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:10,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986697439] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:10,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:10,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-19 14:45:10,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717822560] [2021-12-19 14:45:10,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:10,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-19 14:45:10,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:10,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-19 14:45:10,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-19 14:45:10,847 INFO L87 Difference]: Start difference. First operand 230 states and 263 transitions. Second operand has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 24 states have internal predecessors, (127), 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) [2021-12-19 14:45:10,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:10,934 INFO L93 Difference]: Finished difference Result 351 states and 419 transitions. [2021-12-19 14:45:10,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-19 14:45:10,935 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 24 states have internal predecessors, (127), 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 64 [2021-12-19 14:45:10,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:10,936 INFO L225 Difference]: With dead ends: 351 [2021-12-19 14:45:10,936 INFO L226 Difference]: Without dead ends: 350 [2021-12-19 14:45:10,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-19 14:45:10,937 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 64 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:10,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 89 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 14:45:10,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-19 14:45:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-12-19 14:45:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 347 states have (on average 1.138328530259366) internal successors, (395), 349 states have internal predecessors, (395), 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) [2021-12-19 14:45:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 395 transitions. [2021-12-19 14:45:10,943 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 395 transitions. Word has length 64 [2021-12-19 14:45:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:10,943 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 395 transitions. [2021-12-19 14:45:10,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 24 states have internal predecessors, (127), 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) [2021-12-19 14:45:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 395 transitions. [2021-12-19 14:45:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-19 14:45:10,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:10,945 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2021-12-19 14:45:10,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-19 14:45:11,159 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,SelfDestructingSolverStorable13 [2021-12-19 14:45:11,159 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:11,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:11,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1715892069, now seen corresponding path program 4 times [2021-12-19 14:45:11,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:11,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643379110] [2021-12-19 14:45:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:11,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:11,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:11,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643379110] [2021-12-19 14:45:11,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643379110] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:11,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715203252] [2021-12-19 14:45:11,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 14:45:11,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:11,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:11,443 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) [2021-12-19 14:45:11,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-19 14:45:11,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 14:45:11,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:45:11,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-19 14:45:11,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:11,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:12,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715203252] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:12,364 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:12,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-19 14:45:12,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808360526] [2021-12-19 14:45:12,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:12,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-19 14:45:12,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:12,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-19 14:45:12,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-19 14:45:12,366 INFO L87 Difference]: Start difference. First operand 350 states and 395 transitions. Second operand has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 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) [2021-12-19 14:45:12,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:12,682 INFO L93 Difference]: Finished difference Result 3117 states and 3509 transitions. [2021-12-19 14:45:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-19 14:45:12,682 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 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 117 [2021-12-19 14:45:12,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:12,690 INFO L225 Difference]: With dead ends: 3117 [2021-12-19 14:45:12,691 INFO L226 Difference]: Without dead ends: 3115 [2021-12-19 14:45:12,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-19 14:45:12,693 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 737 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:12,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 344 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 14:45:12,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2021-12-19 14:45:12,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 470. [2021-12-19 14:45:12,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 467 states have (on average 1.1541755888650964) internal successors, (539), 469 states have internal predecessors, (539), 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) [2021-12-19 14:45:12,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 539 transitions. [2021-12-19 14:45:12,712 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 539 transitions. Word has length 117 [2021-12-19 14:45:12,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:12,713 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 539 transitions. [2021-12-19 14:45:12,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 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) [2021-12-19 14:45:12,713 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 539 transitions. [2021-12-19 14:45:12,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-19 14:45:12,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:12,714 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:12,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-19 14:45:12,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-19 14:45:12,924 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:12,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:12,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2057023448, now seen corresponding path program 4 times [2021-12-19 14:45:12,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:12,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744854728] [2021-12-19 14:45:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:12,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:13,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:13,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744854728] [2021-12-19 14:45:13,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744854728] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:13,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104827674] [2021-12-19 14:45:13,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 14:45:13,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:13,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:13,200 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) [2021-12-19 14:45:13,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-19 14:45:13,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 14:45:13,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:45:13,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-19 14:45:13,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:13,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:14,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104827674] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:14,235 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:14,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-19 14:45:14,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098205112] [2021-12-19 14:45:14,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:14,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-19 14:45:14,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:14,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-19 14:45:14,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-19 14:45:14,237 INFO L87 Difference]: Start difference. First operand 470 states and 539 transitions. Second operand has 48 states, 47 states have (on average 5.25531914893617) internal successors, (247), 48 states have internal predecessors, (247), 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) [2021-12-19 14:45:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:14,473 INFO L93 Difference]: Finished difference Result 711 states and 851 transitions. [2021-12-19 14:45:14,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-19 14:45:14,474 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.25531914893617) internal successors, (247), 48 states have internal predecessors, (247), 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 124 [2021-12-19 14:45:14,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:14,476 INFO L225 Difference]: With dead ends: 711 [2021-12-19 14:45:14,476 INFO L226 Difference]: Without dead ends: 710 [2021-12-19 14:45:14,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-19 14:45:14,477 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 119 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:14,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 160 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 14:45:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-12-19 14:45:14,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 710. [2021-12-19 14:45:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 707 states have (on average 1.1357850070721358) internal successors, (803), 709 states have internal predecessors, (803), 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) [2021-12-19 14:45:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 803 transitions. [2021-12-19 14:45:14,487 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 803 transitions. Word has length 124 [2021-12-19 14:45:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:14,487 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 803 transitions. [2021-12-19 14:45:14,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.25531914893617) internal successors, (247), 48 states have internal predecessors, (247), 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) [2021-12-19 14:45:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 803 transitions. [2021-12-19 14:45:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-19 14:45:14,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:14,489 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2021-12-19 14:45:14,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-19 14:45:14,703 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,SelfDestructingSolverStorable15 [2021-12-19 14:45:14,703 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1021052827, now seen corresponding path program 5 times [2021-12-19 14:45:14,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:14,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831809011] [2021-12-19 14:45:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:14,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:15,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:15,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831809011] [2021-12-19 14:45:15,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831809011] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:15,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673877619] [2021-12-19 14:45:15,525 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 14:45:15,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:15,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:15,526 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) [2021-12-19 14:45:15,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-19 14:45:15,608 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-19 14:45:15,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:45:15,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-19 14:45:15,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:16,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:18,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673877619] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:18,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:18,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-19 14:45:18,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658614143] [2021-12-19 14:45:18,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:18,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-19 14:45:18,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-19 14:45:18,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-19 14:45:18,238 INFO L87 Difference]: Start difference. First operand 710 states and 803 transitions. Second operand has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 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) [2021-12-19 14:45:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:19,921 INFO L93 Difference]: Finished difference Result 11997 states and 13361 transitions. [2021-12-19 14:45:19,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-19 14:45:19,922 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 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 237 [2021-12-19 14:45:19,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:19,946 INFO L225 Difference]: With dead ends: 11997 [2021-12-19 14:45:19,947 INFO L226 Difference]: Without dead ends: 11995 [2021-12-19 14:45:19,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-19 14:45:19,953 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1939 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:19,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1939 Valid, 678 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-19 14:45:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11995 states. [2021-12-19 14:45:20,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11995 to 950. [2021-12-19 14:45:20,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 947 states have (on average 1.1520591341077087) internal successors, (1091), 949 states have internal predecessors, (1091), 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) [2021-12-19 14:45:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1091 transitions. [2021-12-19 14:45:20,011 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1091 transitions. Word has length 237 [2021-12-19 14:45:20,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:20,011 INFO L470 AbstractCegarLoop]: Abstraction has 950 states and 1091 transitions. [2021-12-19 14:45:20,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 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) [2021-12-19 14:45:20,012 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1091 transitions. [2021-12-19 14:45:20,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-19 14:45:20,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:20,013 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:20,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-19 14:45:20,227 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,SelfDestructingSolverStorable16 [2021-12-19 14:45:20,227 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:20,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:20,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1115078312, now seen corresponding path program 5 times [2021-12-19 14:45:20,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:20,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630588979] [2021-12-19 14:45:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:20,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:20,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:20,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630588979] [2021-12-19 14:45:20,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630588979] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:20,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038610754] [2021-12-19 14:45:20,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 14:45:20,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:20,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:20,989 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) [2021-12-19 14:45:20,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-19 14:45:21,071 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-19 14:45:21,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:45:21,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-19 14:45:21,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:21,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:23,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038610754] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:23,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:23,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-19 14:45:23,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155337528] [2021-12-19 14:45:23,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:23,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-19 14:45:23,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:23,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-19 14:45:23,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-19 14:45:23,799 INFO L87 Difference]: Start difference. First operand 950 states and 1091 transitions. Second operand has 96 states, 95 states have (on average 5.126315789473685) internal successors, (487), 96 states have internal predecessors, (487), 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) [2021-12-19 14:45:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:24,935 INFO L93 Difference]: Finished difference Result 1431 states and 1715 transitions. [2021-12-19 14:45:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-19 14:45:24,936 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.126315789473685) internal successors, (487), 96 states have internal predecessors, (487), 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 244 [2021-12-19 14:45:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:24,939 INFO L225 Difference]: With dead ends: 1431 [2021-12-19 14:45:24,939 INFO L226 Difference]: Without dead ends: 1430 [2021-12-19 14:45:24,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-19 14:45:24,941 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 173 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:24,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 305 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 14:45:24,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-12-19 14:45:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2021-12-19 14:45:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1427 states have (on average 1.1345480028030834) internal successors, (1619), 1429 states have internal predecessors, (1619), 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) [2021-12-19 14:45:24,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1619 transitions. [2021-12-19 14:45:24,956 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1619 transitions. Word has length 244 [2021-12-19 14:45:24,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:24,956 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 1619 transitions. [2021-12-19 14:45:24,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.126315789473685) internal successors, (487), 96 states have internal predecessors, (487), 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) [2021-12-19 14:45:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1619 transitions. [2021-12-19 14:45:24,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-12-19 14:45:24,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:24,961 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1, 1] [2021-12-19 14:45:24,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-19 14:45:25,178 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,SelfDestructingSolverStorable17 [2021-12-19 14:45:25,178 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:25,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash 351930981, now seen corresponding path program 6 times [2021-12-19 14:45:25,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:25,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083127546] [2021-12-19 14:45:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:25,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:27,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:27,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083127546] [2021-12-19 14:45:27,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083127546] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:27,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519095499] [2021-12-19 14:45:27,874 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 14:45:27,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:27,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:27,875 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) [2021-12-19 14:45:27,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-19 14:45:28,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-19 14:45:28,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:45:28,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-19 14:45:28,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:28,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:45:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:36,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519095499] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:45:36,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:45:36,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-19 14:45:36,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436192690] [2021-12-19 14:45:36,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:45:36,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-19 14:45:36,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:45:36,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-19 14:45:36,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-19 14:45:36,625 INFO L87 Difference]: Start difference. First operand 1430 states and 1619 transitions. Second operand has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 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) [2021-12-19 14:45:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:45:53,524 INFO L93 Difference]: Finished difference Result 47037 states and 52073 transitions. [2021-12-19 14:45:53,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-12-19 14:45:53,525 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 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 477 [2021-12-19 14:45:53,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:45:53,586 INFO L225 Difference]: With dead ends: 47037 [2021-12-19 14:45:53,586 INFO L226 Difference]: Without dead ends: 47035 [2021-12-19 14:45:53,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-19 14:45:53,606 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 4245 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4245 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-19 14:45:53,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4245 Valid, 1349 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-19 14:45:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47035 states. [2021-12-19 14:45:53,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47035 to 1910. [2021-12-19 14:45:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1907 states have (on average 1.1510225485055061) internal successors, (2195), 1909 states have internal predecessors, (2195), 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) [2021-12-19 14:45:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2195 transitions. [2021-12-19 14:45:53,784 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2195 transitions. Word has length 477 [2021-12-19 14:45:53,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:45:53,785 INFO L470 AbstractCegarLoop]: Abstraction has 1910 states and 2195 transitions. [2021-12-19 14:45:53,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 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) [2021-12-19 14:45:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2195 transitions. [2021-12-19 14:45:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2021-12-19 14:45:53,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:45:53,790 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:45:53,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-19 14:45:53,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:53,999 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:45:54,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:45:54,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2035868760, now seen corresponding path program 6 times [2021-12-19 14:45:54,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:45:54,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768395610] [2021-12-19 14:45:54,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:45:54,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:45:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:45:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:56,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:45:56,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768395610] [2021-12-19 14:45:56,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768395610] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:45:56,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638543464] [2021-12-19 14:45:56,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 14:45:56,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:45:56,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:45:56,764 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) [2021-12-19 14:45:56,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-19 14:45:56,949 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-19 14:45:56,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:45:56,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 97 conjunts are in the unsatisfiable core [2021-12-19 14:45:56,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:45:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:45:57,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:46:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:05,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638543464] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:46:05,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:46:05,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-19 14:46:05,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507463607] [2021-12-19 14:46:05,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:46:05,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-19 14:46:05,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:46:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-19 14:46:05,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-19 14:46:05,911 INFO L87 Difference]: Start difference. First operand 1910 states and 2195 transitions. Second operand has 192 states, 191 states have (on average 5.06282722513089) internal successors, (967), 192 states have internal predecessors, (967), 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) [2021-12-19 14:46:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:46:21,211 INFO L93 Difference]: Finished difference Result 2871 states and 3443 transitions. [2021-12-19 14:46:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-12-19 14:46:21,212 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.06282722513089) internal successors, (967), 192 states have internal predecessors, (967), 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 484 [2021-12-19 14:46:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:46:21,216 INFO L225 Difference]: With dead ends: 2871 [2021-12-19 14:46:21,216 INFO L226 Difference]: Without dead ends: 2870 [2021-12-19 14:46:21,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-19 14:46:21,218 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 323 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1376 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-19 14:46:21,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 597 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1376 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-19 14:46:21,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-12-19 14:46:21,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2021-12-19 14:46:21,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2867 states have (on average 1.1339379141960237) internal successors, (3251), 2869 states have internal predecessors, (3251), 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) [2021-12-19 14:46:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3251 transitions. [2021-12-19 14:46:21,255 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3251 transitions. Word has length 484 [2021-12-19 14:46:21,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:46:21,255 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 3251 transitions. [2021-12-19 14:46:21,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.06282722513089) internal successors, (967), 192 states have internal predecessors, (967), 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) [2021-12-19 14:46:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3251 transitions. [2021-12-19 14:46:21,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2021-12-19 14:46:21,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:46:21,281 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1, 1] [2021-12-19 14:46:21,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-19 14:46:21,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:21,487 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:46:21,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:46:21,488 INFO L85 PathProgramCache]: Analyzing trace with hash 353513061, now seen corresponding path program 7 times [2021-12-19 14:46:21,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:46:21,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387119027] [2021-12-19 14:46:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:46:21,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:46:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:32,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:46:32,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387119027] [2021-12-19 14:46:32,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387119027] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:46:32,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488789874] [2021-12-19 14:46:32,205 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-19 14:46:32,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:46:32,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:46:32,206 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) [2021-12-19 14:46:32,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-19 14:46:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:46:32,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 192 conjunts are in the unsatisfiable core [2021-12-19 14:46:32,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:46:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:46:33,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:47:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:47:05,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488789874] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:47:05,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:47:05,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-12-19 14:47:05,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822375673] [2021-12-19 14:47:05,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:47:05,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-12-19 14:47:05,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:47:05,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-12-19 14:47:05,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-12-19 14:47:05,207 INFO L87 Difference]: Start difference. First operand 2870 states and 3251 transitions. Second operand has 384 states, 383 states have (on average 4.994778067885117) internal successors, (1913), 384 states have internal predecessors, (1913), 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) [2021-12-19 14:51:07,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:51:07,537 INFO L93 Difference]: Finished difference Result 186237 states and 205529 transitions. [2021-12-19 14:51:07,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-12-19 14:51:07,538 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.994778067885117) internal successors, (1913), 384 states have internal predecessors, (1913), 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 957 [2021-12-19 14:51:07,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:51:07,702 INFO L225 Difference]: With dead ends: 186237 [2021-12-19 14:51:07,702 INFO L226 Difference]: Without dead ends: 186235 [2021-12-19 14:51:07,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2104 GetRequests, 1722 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.9s TimeCoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-12-19 14:51:07,741 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 9693 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 2226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9693 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 3772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2226 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-19 14:51:07,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9693 Valid, 2696 Invalid, 3772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2226 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-19 14:51:07,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186235 states. [2021-12-19 14:51:08,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186235 to 3830. [2021-12-19 14:51:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3830 states, 3827 states have (on average 1.1505095374967338) internal successors, (4403), 3829 states have internal predecessors, (4403), 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) [2021-12-19 14:51:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3830 states to 3830 states and 4403 transitions. [2021-12-19 14:51:08,337 INFO L78 Accepts]: Start accepts. Automaton has 3830 states and 4403 transitions. Word has length 957 [2021-12-19 14:51:08,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:51:08,338 INFO L470 AbstractCegarLoop]: Abstraction has 3830 states and 4403 transitions. [2021-12-19 14:51:08,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.994778067885117) internal successors, (1913), 384 states have internal predecessors, (1913), 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) [2021-12-19 14:51:08,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3830 states and 4403 transitions. [2021-12-19 14:51:08,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2021-12-19 14:51:08,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:51:08,345 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:51:08,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-19 14:51:08,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:51:08,547 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:51:08,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:51:08,548 INFO L85 PathProgramCache]: Analyzing trace with hash -852109912, now seen corresponding path program 7 times [2021-12-19 14:51:08,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:51:08,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353793343] [2021-12-19 14:51:08,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:51:08,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:51:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:51:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:51:19,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:51:19,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353793343] [2021-12-19 14:51:19,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353793343] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:51:19,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643276687] [2021-12-19 14:51:19,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-19 14:51:19,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:51:19,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:51:19,374 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) [2021-12-19 14:51:19,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-19 14:51:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:51:19,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 193 conjunts are in the unsatisfiable core [2021-12-19 14:51:19,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:51:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:51:20,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:51:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 90726 backedges. 1 proven. 90725 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:51:52,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643276687] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:51:52,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:51:52,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-12-19 14:51:52,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788083007] [2021-12-19 14:51:52,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:51:52,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-12-19 14:51:52,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:51:52,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-12-19 14:51:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-12-19 14:51:52,866 INFO L87 Difference]: Start difference. First operand 3830 states and 4403 transitions. Second operand has 384 states, 383 states have (on average 5.031331592689295) internal successors, (1927), 384 states have internal predecessors, (1927), 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) [2021-12-19 14:55:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:55:33,529 INFO L93 Difference]: Finished difference Result 5751 states and 6899 transitions. [2021-12-19 14:55:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-12-19 14:55:33,530 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.031331592689295) internal successors, (1927), 384 states have internal predecessors, (1927), 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 964 [2021-12-19 14:55:33,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:55:33,534 INFO L225 Difference]: With dead ends: 5751 [2021-12-19 14:55:33,535 INFO L226 Difference]: Without dead ends: 5750 [2021-12-19 14:55:33,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2119 GetRequests, 1737 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 40.8s TimeCoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-12-19 14:55:33,540 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 263 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 2662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2662 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-19 14:55:33,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 1174 Invalid, 3446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2662 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-19 14:55:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5750 states. [2021-12-19 14:55:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5750 to 5750. [2021-12-19 14:55:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 5747 states have (on average 1.1336349399686794) internal successors, (6515), 5749 states have internal predecessors, (6515), 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) [2021-12-19 14:55:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 6515 transitions. [2021-12-19 14:55:33,581 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 6515 transitions. Word has length 964 [2021-12-19 14:55:33,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:55:33,582 INFO L470 AbstractCegarLoop]: Abstraction has 5750 states and 6515 transitions. [2021-12-19 14:55:33,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.031331592689295) internal successors, (1927), 384 states have internal predecessors, (1927), 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) [2021-12-19 14:55:33,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 6515 transitions. [2021-12-19 14:55:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1918 [2021-12-19 14:55:33,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:55:33,604 INFO L514 BasicCegarLoop]: trace histogram [383, 383, 383, 382, 382, 1, 1, 1, 1] [2021-12-19 14:55:33,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-19 14:55:33,811 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,SelfDestructingSolverStorable21 [2021-12-19 14:55:33,811 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-19 14:55:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:55:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1727166053, now seen corresponding path program 8 times [2021-12-19 14:55:33,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:55:33,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058759215] [2021-12-19 14:55:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:55:33,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:55:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:56:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:56:14,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:56:14,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058759215] [2021-12-19 14:56:14,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058759215] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:56:14,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557812300] [2021-12-19 14:56:14,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 14:56:14,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:56:14,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:56:14,855 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) [2021-12-19 14:56:14,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-19 14:56:15,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 14:56:15,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:56:15,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 3457 conjuncts, 384 conjunts are in the unsatisfiable core [2021-12-19 14:56:15,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:56:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:56:18,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15