./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5fbdf5bf 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/loop-zilu/benchmark08_conjunctive.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-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 32bit --witnessprinter.graph.data.programhash 18829c97cf11abff32d3007e38ce2546f8dc4f5d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@1fed0788 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 22:48:34,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 22:48:34,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 22:48:34,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 22:48:34,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 22:48:34,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 22:48:34,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 22:48:34,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 22:48:34,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 22:48:34,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 22:48:34,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 22:48:34,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 22:48:34,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 22:48:34,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 22:48:34,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 22:48:34,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 22:48:34,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 22:48:34,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 22:48:34,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 22:48:34,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 22:48:34,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 22:48:34,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 22:48:34,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 22:48:34,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 22:48:34,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 22:48:34,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 22:48:34,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 22:48:34,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 22:48:34,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 22:48:34,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 22:48:34,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 22:48:34,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 22:48:34,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 22:48:34,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 22:48:34,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 22:48:34,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 22:48:34,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 22:48:34,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 22:48:34,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 22:48:34,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 22:48:34,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 22:48:34,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-08-30 22:48:34,900 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 22:48:34,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 22:48:34,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 22:48:34,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 22:48:34,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 22:48:34,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 22:48:34,904 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 22:48:34,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 22:48:34,905 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 22:48:34,905 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 22:48:34,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 22:48:34,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 22:48:34,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 22:48:34,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-30 22:48:34,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 22:48:34,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-30 22:48:34,907 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-30 22:48:34,907 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 22:48:34,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-30 22:48:34,908 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 22:48:34,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-30 22:48:34,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 22:48:34,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 22:48:34,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 22:48:34,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:48:34,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 22:48:34,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 22:48:34,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-30 22:48:34,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 22:48:34,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 22:48:34,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-30 22:48:34,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 22:48:34,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18829c97cf11abff32d3007e38ce2546f8dc4f5d [2021-08-30 22:48:35,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 22:48:35,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 22:48:35,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 22:48:35,259 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 22:48:35,259 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 22:48:35,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i [2021-08-30 22:48:35,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80b1a641/d5de901a17ab40b8818c370ddefa88d2/FLAG5039a5464 [2021-08-30 22:48:35,768 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 22:48:35,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i [2021-08-30 22:48:35,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80b1a641/d5de901a17ab40b8818c370ddefa88d2/FLAG5039a5464 [2021-08-30 22:48:35,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f80b1a641/d5de901a17ab40b8818c370ddefa88d2 [2021-08-30 22:48:35,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 22:48:35,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-30 22:48:35,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 22:48:35,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 22:48:35,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 22:48:35,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:48:35" (1/1) ... [2021-08-30 22:48:35,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c84d218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:35, skipping insertion in model container [2021-08-30 22:48:35,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:48:35" (1/1) ... [2021-08-30 22:48:35,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 22:48:35,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 22:48:35,956 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i[873,886] [2021-08-30 22:48:35,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:48:35,973 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 22:48:35,985 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i[873,886] [2021-08-30 22:48:35,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:48:36,001 INFO L208 MainTranslator]: Completed translation [2021-08-30 22:48:36,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36 WrapperNode [2021-08-30 22:48:36,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 22:48:36,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-30 22:48:36,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-30 22:48:36,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-30 22:48:36,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36" (1/1) ... [2021-08-30 22:48:36,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36" (1/1) ... [2021-08-30 22:48:36,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-30 22:48:36,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 22:48:36,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 22:48:36,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 22:48:36,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36" (1/1) ... [2021-08-30 22:48:36,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36" (1/1) ... [2021-08-30 22:48:36,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36" (1/1) ... [2021-08-30 22:48:36,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36" (1/1) ... [2021-08-30 22:48:36,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36" (1/1) ... [2021-08-30 22:48:36,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36" (1/1) ... [2021-08-30 22:48:36,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36" (1/1) ... [2021-08-30 22:48:36,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 22:48:36,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 22:48:36,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 22:48:36,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 22:48:36,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36" (1/1) ... [2021-08-30 22:48:36,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:48:36,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:48:36,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 22:48:36,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 22:48:36,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 22:48:36,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 22:48:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 22:48:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 22:48:36,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 22:48:36,305 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-30 22:48:36,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:48:36 BoogieIcfgContainer [2021-08-30 22:48:36,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 22:48:36,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 22:48:36,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 22:48:36,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 22:48:36,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:48:35" (1/3) ... [2021-08-30 22:48:36,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1460dd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:48:36, skipping insertion in model container [2021-08-30 22:48:36,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:48:36" (2/3) ... [2021-08-30 22:48:36,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1460dd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:48:36, skipping insertion in model container [2021-08-30 22:48:36,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:48:36" (3/3) ... [2021-08-30 22:48:36,314 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark08_conjunctive.i [2021-08-30 22:48:36,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 22:48:36,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-30 22:48:36,366 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 22:48:36,375 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 22:48:36,375 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-30 22:48:36,388 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:36,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-30 22:48:36,393 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:48:36,394 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-30 22:48:36,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:48:36,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:48:36,401 INFO L82 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-08-30 22:48:36,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:48:36,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467634256] [2021-08-30 22:48:36,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:36,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:48:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:36,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:48:36,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467634256] [2021-08-30 22:48:36,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467634256] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:48:36,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:48:36,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:48:36,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464101051] [2021-08-30 22:48:36,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:48:36,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:48:36,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:48:36,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:48:36,651 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:48:36,720 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2021-08-30 22:48:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:48:36,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-30 22:48:36,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:48:36,734 INFO L225 Difference]: With dead ends: 34 [2021-08-30 22:48:36,734 INFO L226 Difference]: Without dead ends: 15 [2021-08-30 22:48:36,737 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:48:36,740 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.33ms IncrementalHoareTripleChecker+Time [2021-08-30 22:48:36,741 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 47.33ms Time] [2021-08-30 22:48:36,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-30 22:48:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-08-30 22:48:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:36,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-08-30 22:48:36,764 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-08-30 22:48:36,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:48:36,765 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-08-30 22:48:36,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-08-30 22:48:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-30 22:48:36,766 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:48:36,766 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-30 22:48:36,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 22:48:36,767 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:48:36,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:48:36,767 INFO L82 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-08-30 22:48:36,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:48:36,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595106948] [2021-08-30 22:48:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:36,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:48:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:36,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:36,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:48:36,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595106948] [2021-08-30 22:48:36,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595106948] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:48:36,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:48:36,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:48:36,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562201589] [2021-08-30 22:48:36,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:48:36,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:48:36,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:48:36,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:48:36,813 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-08-30 22:48:36,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:48:36,870 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-08-30 22:48:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:48:36,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2021-08-30 22:48:36,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:48:36,872 INFO L225 Difference]: With dead ends: 16 [2021-08-30 22:48:36,872 INFO L226 Difference]: Without dead ends: 15 [2021-08-30 22:48:36,872 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:48:36,874 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.29ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.93ms IncrementalHoareTripleChecker+Time [2021-08-30 22:48:36,874 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.29ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 47.93ms Time] [2021-08-30 22:48:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-30 22:48:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-30 22:48:36,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-08-30 22:48:36,883 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2021-08-30 22:48:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:48:36,884 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-08-30 22:48:36,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-08-30 22:48:36,884 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-08-30 22:48:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 22:48:36,885 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:48:36,885 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:48:36,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 22:48:36,885 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:48:36,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:48:36,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-08-30 22:48:36,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:48:36,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606112641] [2021-08-30 22:48:36,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:36,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:48:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:36,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:48:36,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606112641] [2021-08-30 22:48:36,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606112641] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:48:36,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:48:36,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 22:48:36,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706448215] [2021-08-30 22:48:36,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 22:48:36,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:48:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 22:48:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 22:48:36,966 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-08-30 22:48:37,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:48:37,025 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-08-30 22:48:37,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 22:48:37,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2021-08-30 22:48:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:48:37,026 INFO L225 Difference]: With dead ends: 19 [2021-08-30 22:48:37,026 INFO L226 Difference]: Without dead ends: 17 [2021-08-30 22:48:37,027 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:48:37,028 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.46ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.94ms IncrementalHoareTripleChecker+Time [2021-08-30 22:48:37,029 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.46ms Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 45.94ms Time] [2021-08-30 22:48:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-30 22:48:37,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-30 22:48:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-08-30 22:48:37,033 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2021-08-30 22:48:37,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:48:37,033 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-08-30 22:48:37,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2021-08-30 22:48:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-08-30 22:48:37,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-30 22:48:37,034 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:48:37,034 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:48:37,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 22:48:37,035 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:48:37,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:48:37,036 INFO L82 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-08-30 22:48:37,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:48:37,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455827163] [2021-08-30 22:48:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:37,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:48:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:37,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:48:37,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455827163] [2021-08-30 22:48:37,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455827163] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:48:37,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2815203] [2021-08-30 22:48:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:37,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:48:37,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:48:37,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:48:37,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 22:48:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:37,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 22:48:37,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:48:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:37,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:48:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:37,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2815203] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:48:37,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:48:37,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-08-30 22:48:37,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355850501] [2021-08-30 22:48:37,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 22:48:37,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:48:37,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 22:48:37,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-30 22:48:37,361 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:48:37,460 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-08-30 22:48:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 22:48:37,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-30 22:48:37,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:48:37,461 INFO L225 Difference]: With dead ends: 28 [2021-08-30 22:48:37,461 INFO L226 Difference]: Without dead ends: 27 [2021-08-30 22:48:37,462 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 82.16ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-08-30 22:48:37,463 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.13ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.06ms IncrementalHoareTripleChecker+Time [2021-08-30 22:48:37,464 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 1.13ms Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 65.06ms Time] [2021-08-30 22:48:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-30 22:48:37,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-08-30 22:48:37,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:37,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-08-30 22:48:37,468 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 10 [2021-08-30 22:48:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:48:37,469 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-08-30 22:48:37,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-08-30 22:48:37,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 22:48:37,470 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:48:37,470 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:48:37,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 22:48:37,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:48:37,693 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:48:37,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:48:37,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1472766433, now seen corresponding path program 1 times [2021-08-30 22:48:37,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:48:37,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660721287] [2021-08-30 22:48:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:37,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:48:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:37,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:48:37,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660721287] [2021-08-30 22:48:37,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660721287] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:48:37,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825682690] [2021-08-30 22:48:37,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:37,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:48:37,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:48:37,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:48:37,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 22:48:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:37,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 22:48:37,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:48:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:37,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 22:48:37,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825682690] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:48:37,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 22:48:37,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-08-30 22:48:37,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060258036] [2021-08-30 22:48:37,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 22:48:37,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:48:37,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 22:48:37,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 22:48:37,909 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:37,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:48:37,956 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-08-30 22:48:37,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 22:48:37,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 [2021-08-30 22:48:37,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:48:37,958 INFO L225 Difference]: With dead ends: 24 [2021-08-30 22:48:37,958 INFO L226 Difference]: Without dead ends: 22 [2021-08-30 22:48:37,958 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 45.45ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-30 22:48:37,959 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.42ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.69ms IncrementalHoareTripleChecker+Time [2021-08-30 22:48:37,960 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 0 Invalid, 38 Unknown, 0 Unchecked, 0.42ms Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 28.69ms Time] [2021-08-30 22:48:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-30 22:48:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-30 22:48:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-08-30 22:48:37,964 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 11 [2021-08-30 22:48:37,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:48:37,964 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-08-30 22:48:37,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:37,964 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-08-30 22:48:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 22:48:37,965 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:48:37,965 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-30 22:48:37,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 22:48:38,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:48:38,182 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:48:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:48:38,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2021-08-30 22:48:38,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:48:38,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033262421] [2021-08-30 22:48:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:38,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:48:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:38,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:48:38,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033262421] [2021-08-30 22:48:38,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033262421] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:48:38,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355347977] [2021-08-30 22:48:38,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:38,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:48:38,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:48:38,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:48:38,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 22:48:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:38,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 22:48:38,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:48:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:38,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:48:38,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:38,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355347977] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:48:38,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:48:38,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-08-30 22:48:38,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209044977] [2021-08-30 22:48:38,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 22:48:38,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:48:38,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 22:48:38,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-30 22:48:38,390 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 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) [2021-08-30 22:48:38,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:48:38,469 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-08-30 22:48:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 22:48:38,469 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 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) Word has length 12 [2021-08-30 22:48:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:48:38,470 INFO L225 Difference]: With dead ends: 32 [2021-08-30 22:48:38,470 INFO L226 Difference]: Without dead ends: 31 [2021-08-30 22:48:38,471 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 74.47ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-08-30 22:48:38,471 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.28ms IncrementalHoareTripleChecker+Time [2021-08-30 22:48:38,472 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 65 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 45.28ms Time] [2021-08-30 22:48:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-30 22:48:38,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-08-30 22:48:38,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:38,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-08-30 22:48:38,476 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 12 [2021-08-30 22:48:38,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:48:38,476 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-08-30 22:48:38,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 12 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) [2021-08-30 22:48:38,477 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-08-30 22:48:38,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 22:48:38,477 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:48:38,477 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2021-08-30 22:48:38,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 22:48:38,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:48:38,688 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:48:38,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:48:38,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1418773263, now seen corresponding path program 2 times [2021-08-30 22:48:38,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:48:38,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93476338] [2021-08-30 22:48:38,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:38,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:48:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:38,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:48:38,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93476338] [2021-08-30 22:48:38,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93476338] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:48:38,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510090880] [2021-08-30 22:48:38,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 22:48:38,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:48:38,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:48:38,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:48:38,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-30 22:48:38,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 22:48:38,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:48:38,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 22:48:38,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:48:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:39,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:48:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:39,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510090880] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:48:39,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:48:39,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2021-08-30 22:48:39,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720004416] [2021-08-30 22:48:39,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-08-30 22:48:39,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:48:39,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-08-30 22:48:39,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2021-08-30 22:48:39,233 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:39,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:48:39,463 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2021-08-30 22:48:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-30 22:48:39,464 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 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 20 [2021-08-30 22:48:39,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:48:39,464 INFO L225 Difference]: With dead ends: 45 [2021-08-30 22:48:39,465 INFO L226 Difference]: Without dead ends: 44 [2021-08-30 22:48:39,465 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 321.20ms TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2021-08-30 22:48:39,466 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.87ms IncrementalHoareTripleChecker+Time [2021-08-30 22:48:39,466 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 155 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [25 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 86.87ms Time] [2021-08-30 22:48:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-30 22:48:39,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2021-08-30 22:48:39,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.1) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2021-08-30 22:48:39,471 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 20 [2021-08-30 22:48:39,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:48:39,472 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-08-30 22:48:39,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:39,472 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2021-08-30 22:48:39,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-30 22:48:39,473 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:48:39,473 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-08-30 22:48:39,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-30 22:48:39,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:48:39,696 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:48:39,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:48:39,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1410159193, now seen corresponding path program 2 times [2021-08-30 22:48:39,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:48:39,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588778219] [2021-08-30 22:48:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:39,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:48:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:39,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:48:39,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588778219] [2021-08-30 22:48:39,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588778219] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:48:39,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111875072] [2021-08-30 22:48:39,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 22:48:39,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:48:39,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:48:39,816 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:48:39,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-30 22:48:39,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 22:48:39,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:48:39,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 22:48:39,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:48:39,937 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-30 22:48:39,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:48:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-08-30 22:48:40,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111875072] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:48:40,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:48:40,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2021-08-30 22:48:40,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420237949] [2021-08-30 22:48:40,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 22:48:40,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:48:40,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 22:48:40,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-08-30 22:48:40,017 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:48:40,175 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-08-30 22:48:40,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-30 22:48:40,176 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-08-30 22:48:40,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:48:40,176 INFO L225 Difference]: With dead ends: 42 [2021-08-30 22:48:40,176 INFO L226 Difference]: Without dead ends: 41 [2021-08-30 22:48:40,177 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 161.68ms TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2021-08-30 22:48:40,177 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.70ms IncrementalHoareTripleChecker+Time [2021-08-30 22:48:40,178 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 80 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 50.70ms Time] [2021-08-30 22:48:40,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-30 22:48:40,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-08-30 22:48:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.025) internal successors, (41), 40 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2021-08-30 22:48:40,182 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 27 [2021-08-30 22:48:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:48:40,182 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2021-08-30 22:48:40,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 15 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:48:40,182 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2021-08-30 22:48:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-30 22:48:40,183 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:48:40,183 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1] [2021-08-30 22:48:40,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-30 22:48:40,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:48:40,384 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:48:40,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:48:40,384 INFO L82 PathProgramCache]: Analyzing trace with hash 915144177, now seen corresponding path program 3 times [2021-08-30 22:48:40,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:48:40,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843935926] [2021-08-30 22:48:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:48:40,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:48:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:48:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:40,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:48:40,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843935926] [2021-08-30 22:48:40,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843935926] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:48:40,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422253273] [2021-08-30 22:48:40,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-30 22:48:40,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:48:40,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:48:40,619 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:48:40,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-30 22:48:40,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-08-30 22:48:40,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:48:40,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-30 22:48:40,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:48:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:48:41,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:49:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:49:23,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422253273] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:49:23,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:49:23,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2021-08-30 22:49:23,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224889417] [2021-08-30 22:49:23,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-08-30 22:49:23,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:49:23,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-08-30 22:49:23,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1775, Unknown=16, NotChecked=0, Total=2162 [2021-08-30 22:49:23,839 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 47 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:49:26,045 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~sum~0 (- 1)))) (let ((.cse12 (+ (div (+ .cse0 2147483639) 2) 1)) (.cse11 (+ |c_ULTIMATE.start_main_#t~post6| 1)) (.cse10 (* c_ULTIMATE.start_main_~i~0 (- 1))) (.cse13 (* 2 c_ULTIMATE.start_main_~i~0))) (and (<= |c_ULTIMATE.start_main_#t~post6| (div (+ .cse0 (* |c_ULTIMATE.start_main_#t~post6| (- 1)) 2147483641) 2)) (forall ((aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 Int) (aux_div_v_ULTIMATE.start_main_~i~0_28_265 Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377 Int) (aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399 Int) (aux_div_v_ULTIMATE.start_main_~sum~0_41_68 Int) (aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 Int) (aux_div_v_ULTIMATE.start_main_~sum~0_40_120 Int)) (let ((.cse6 (* 5 aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399)) (.cse9 (* 5 aux_div_v_ULTIMATE.start_main_~i~0_28_265)) (.cse7 (* 4 aux_div_v_ULTIMATE.start_main_~sum~0_40_120)) (.cse4 (* 4 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73)) (.cse5 (* 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73)) (.cse1 (* 2 aux_div_v_ULTIMATE.start_main_~sum~0_40_120)) (.cse8 (div (+ (* aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 4) 4 (* aux_div_v_ULTIMATE.start_main_~sum~0_40_120 (- 2)) (* aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 2)) 4)) (.cse2 (* 2 aux_div_v_ULTIMATE.start_main_~sum~0_41_68)) (.cse3 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377))) (or (<= (+ |c_ULTIMATE.start_main_#t~post6| aux_div_v_ULTIMATE.start_main_~sum~0_40_120 1) (div (+ (* c_ULTIMATE.start_main_~sum~0 (- 1)) (* aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377 (- 5)) 2147483630) 2)) (<= aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399 (+ aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377 1)) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse1 .cse2 17 .cse3) 0) (< aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 0) (<= (+ .cse4 .cse5 4) (+ .cse6 .cse2 .cse3 .cse7)) (<= aux_div_v_ULTIMATE.start_main_~sum~0_40_120 0) (<= (+ |c_ULTIMATE.start_main_#t~post6| aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 (* 2 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73) aux_div_v_ULTIMATE.start_main_~sum~0_41_68 10) 0) (<= (+ |c_ULTIMATE.start_main_#t~post6| 2) .cse8) (<= (+ aux_div_v_ULTIMATE.start_main_~i~0_28_265 1) aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399) (<= (+ .cse4 |c_ULTIMATE.start_main_#t~post6| 15 .cse5) (+ .cse6 .cse1)) (<= aux_div_v_ULTIMATE.start_main_~i~0_28_265 (+ .cse8 1)) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse9 c_ULTIMATE.start_main_~sum~0 .cse3 .cse7) (+ .cse4 2147483638 .cse5)) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~sum~0) (+ 2147483643 .cse2)) (<= 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73) (<= (+ .cse6 5) .cse9) (<= (+ 7 .cse9 .cse2 .cse3 .cse7) (+ .cse4 .cse5)) (<= 0 (+ .cse1 9 .cse8 .cse2 .cse3)) (<= aux_div_v_ULTIMATE.start_main_~i~0_28_265 (+ aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 1))))) (<= c_ULTIMATE.start_main_~i~0 (div (+ .cse10 .cse0 2147483644) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~sum~0) 2147483646) (<= .cse11 (div .cse12 2)) (forall ((aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58 Int)) (or (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58) (<= (div (+ c_ULTIMATE.start_main_~sum~0 (- 2147483637) (* aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58 5)) (- 2)) 0) (<= (+ (* 2 aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58) 1) (div (+ (* c_ULTIMATE.start_main_~sum~0 (- 1)) (* |c_ULTIMATE.start_main_#t~post6| (- 1)) 2147483634) 2)))) (<= (+ c_ULTIMATE.start_main_~i~0 c_ULTIMATE.start_main_~sum~0) 2147483647) (<= .cse13 .cse12) (<= .cse11 (div (+ .cse0 2147483646) 2)) (<= c_ULTIMATE.start_main_~i~0 (div (+ (div (+ .cse10 .cse0 2147483639) 2) (- 1)) 2)) (<= (+ .cse13 c_ULTIMATE.start_main_~sum~0) 2147483646) (forall ((aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 Int) (aux_div_v_ULTIMATE.start_main_~i~0_28_265 Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377 Int) (aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399 Int) (aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 Int) (aux_div_v_ULTIMATE.start_main_~sum~0_40_120 Int)) (let ((.cse21 (* 5 aux_div_v_ULTIMATE.start_main_~i~0_28_265)) (.cse16 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377)) (.cse20 (* 4 aux_div_v_ULTIMATE.start_main_~sum~0_40_120)) (.cse17 (* 4 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73)) (.cse18 (* 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73)) (.cse19 (* 5 aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399)) (.cse14 (* 2 aux_div_v_ULTIMATE.start_main_~sum~0_40_120)) (.cse15 (div (+ (* aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 4) 4 (* aux_div_v_ULTIMATE.start_main_~sum~0_40_120 (- 2)) (* aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 2)) 4))) (or (<= (+ |c_ULTIMATE.start_main_#t~post6| aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 (* 2 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73) (div (+ (* c_ULTIMATE.start_main_~sum~0 (- 1)) 2147483646) (- 2)) 9) 0) (<= aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399 (+ aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377 1)) (< aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 0) (<= aux_div_v_ULTIMATE.start_main_~sum~0_40_120 0) (<= 2147483636 (+ .cse14 .cse15 c_ULTIMATE.start_main_~sum~0 .cse16)) (<= (+ aux_div_v_ULTIMATE.start_main_~i~0_28_265 1) aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399) (<= aux_div_v_ULTIMATE.start_main_~i~0_28_265 (+ .cse15 1)) (<= (+ 2147483649 .cse17 .cse18) (+ .cse19 c_ULTIMATE.start_main_~sum~0 .cse16 .cse20)) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse14 c_ULTIMATE.start_main_~sum~0 .cse16) 2147483630) (<= 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73) (<= (+ .cse19 5) .cse21) (<= (+ .cse21 c_ULTIMATE.start_main_~sum~0 .cse16 .cse20) (+ .cse17 .cse18 2147483639)) (<= aux_div_v_ULTIMATE.start_main_~i~0_28_265 (+ aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 1)) (<= (+ .cse17 |c_ULTIMATE.start_main_#t~post6| 14 .cse18) (+ .cse19 .cse14)) (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) .cse15))))))) is different from false [2021-08-30 22:49:28,060 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse10 (+ |c_ULTIMATE.start_main_#t~post6| 1)) (.cse0 (* c_ULTIMATE.start_main_~sum~0 (- 1)))) (and (<= |c_ULTIMATE.start_main_#t~post6| (div (+ .cse0 (* |c_ULTIMATE.start_main_#t~post6| (- 1)) 2147483641) 2)) (forall ((aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 Int) (aux_div_v_ULTIMATE.start_main_~i~0_28_265 Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377 Int) (aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399 Int) (aux_div_v_ULTIMATE.start_main_~sum~0_41_68 Int) (aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 Int) (aux_div_v_ULTIMATE.start_main_~sum~0_40_120 Int)) (let ((.cse6 (* 5 aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399)) (.cse9 (* 5 aux_div_v_ULTIMATE.start_main_~i~0_28_265)) (.cse7 (* 4 aux_div_v_ULTIMATE.start_main_~sum~0_40_120)) (.cse4 (* 4 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73)) (.cse5 (* 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73)) (.cse1 (* 2 aux_div_v_ULTIMATE.start_main_~sum~0_40_120)) (.cse8 (div (+ (* aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 4) 4 (* aux_div_v_ULTIMATE.start_main_~sum~0_40_120 (- 2)) (* aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 2)) 4)) (.cse2 (* 2 aux_div_v_ULTIMATE.start_main_~sum~0_41_68)) (.cse3 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377))) (or (<= (+ |c_ULTIMATE.start_main_#t~post6| aux_div_v_ULTIMATE.start_main_~sum~0_40_120 1) (div (+ (* c_ULTIMATE.start_main_~sum~0 (- 1)) (* aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377 (- 5)) 2147483630) 2)) (<= aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399 (+ aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377 1)) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse1 .cse2 17 .cse3) 0) (< aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 0) (<= (+ .cse4 .cse5 4) (+ .cse6 .cse2 .cse3 .cse7)) (<= aux_div_v_ULTIMATE.start_main_~sum~0_40_120 0) (<= (+ |c_ULTIMATE.start_main_#t~post6| aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 (* 2 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73) aux_div_v_ULTIMATE.start_main_~sum~0_41_68 10) 0) (<= (+ |c_ULTIMATE.start_main_#t~post6| 2) .cse8) (<= (+ aux_div_v_ULTIMATE.start_main_~i~0_28_265 1) aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399) (<= (+ .cse4 |c_ULTIMATE.start_main_#t~post6| 15 .cse5) (+ .cse6 .cse1)) (<= aux_div_v_ULTIMATE.start_main_~i~0_28_265 (+ .cse8 1)) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse9 c_ULTIMATE.start_main_~sum~0 .cse3 .cse7) (+ .cse4 2147483638 .cse5)) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~sum~0) (+ 2147483643 .cse2)) (<= 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73) (<= (+ .cse6 5) .cse9) (<= (+ 7 .cse9 .cse2 .cse3 .cse7) (+ .cse4 .cse5)) (<= 0 (+ .cse1 9 .cse8 .cse2 .cse3)) (<= aux_div_v_ULTIMATE.start_main_~i~0_28_265 (+ aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 1))))) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~sum~0) 2147483646) (<= .cse10 (div (+ (div (+ .cse0 2147483639) 2) 1) 2)) (forall ((aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58 Int)) (or (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58) (<= (div (+ c_ULTIMATE.start_main_~sum~0 (- 2147483637) (* aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58 5)) (- 2)) 0) (<= (+ (* 2 aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58) 1) (div (+ (* c_ULTIMATE.start_main_~sum~0 (- 1)) (* |c_ULTIMATE.start_main_#t~post6| (- 1)) 2147483634) 2)))) (<= .cse10 (div (+ .cse0 2147483646) 2)) (forall ((aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 Int) (aux_div_v_ULTIMATE.start_main_~i~0_28_265 Int) (aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377 Int) (aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399 Int) (aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 Int) (aux_div_v_ULTIMATE.start_main_~sum~0_40_120 Int)) (let ((.cse18 (* 5 aux_div_v_ULTIMATE.start_main_~i~0_28_265)) (.cse13 (* 5 aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377)) (.cse17 (* 4 aux_div_v_ULTIMATE.start_main_~sum~0_40_120)) (.cse14 (* 4 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73)) (.cse15 (* 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73)) (.cse16 (* 5 aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399)) (.cse11 (* 2 aux_div_v_ULTIMATE.start_main_~sum~0_40_120)) (.cse12 (div (+ (* aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 4) 4 (* aux_div_v_ULTIMATE.start_main_~sum~0_40_120 (- 2)) (* aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 2)) 4))) (or (<= (+ |c_ULTIMATE.start_main_#t~post6| aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 (* 2 aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73) (div (+ (* c_ULTIMATE.start_main_~sum~0 (- 1)) 2147483646) (- 2)) 9) 0) (<= aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399 (+ aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377 1)) (< aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 0) (<= aux_div_v_ULTIMATE.start_main_~sum~0_40_120 0) (<= 2147483636 (+ .cse11 .cse12 c_ULTIMATE.start_main_~sum~0 .cse13)) (<= (+ aux_div_v_ULTIMATE.start_main_~i~0_28_265 1) aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0_28_265_109_377_399) (<= aux_div_v_ULTIMATE.start_main_~i~0_28_265 (+ .cse12 1)) (<= (+ 2147483649 .cse14 .cse15) (+ .cse16 c_ULTIMATE.start_main_~sum~0 .cse13 .cse17)) (<= (+ |c_ULTIMATE.start_main_#t~post6| .cse11 c_ULTIMATE.start_main_~sum~0 .cse13) 2147483630) (<= 2 aux_mod_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73) (<= (+ .cse16 5) .cse18) (<= (+ .cse18 c_ULTIMATE.start_main_~sum~0 .cse13 .cse17) (+ .cse14 .cse15 2147483639)) (<= aux_div_v_ULTIMATE.start_main_~i~0_28_265 (+ aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~sum~0_40_120_225_73 1)) (<= (+ .cse14 |c_ULTIMATE.start_main_#t~post6| 14 .cse15) (+ .cse16 .cse11)) (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) .cse12)))))) is different from false [2021-08-30 22:49:36,330 WARN L210 SmtUtils]: Spent 8.13s on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2021-08-30 22:50:19,335 WARN L210 SmtUtils]: Spent 15.11s on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2021-08-30 22:50:25,727 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_#t~post6| 1)) (.cse0 (* c_ULTIMATE.start_main_~sum~0 (- 1)))) (and (<= |c_ULTIMATE.start_main_#t~post6| (div (+ .cse0 (* |c_ULTIMATE.start_main_#t~post6| (- 1)) 2147483641) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post6| c_ULTIMATE.start_main_~sum~0) 2147483646) (<= .cse1 (div (+ (div (+ .cse0 2147483639) 2) 1) 2)) (forall ((aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58 Int)) (or (<= (+ |c_ULTIMATE.start_main_#t~post6| 1) aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58) (<= (div (+ c_ULTIMATE.start_main_~sum~0 (- 2147483637) (* aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58 5)) (- 2)) 0) (<= (+ (* 2 aux_div_aux_div_v_ULTIMATE.start_main_~i~0_27_99_58) 1) (div (+ (* c_ULTIMATE.start_main_~sum~0 (- 1)) (* |c_ULTIMATE.start_main_#t~post6| (- 1)) 2147483634) 2)))) (<= .cse1 (div (+ .cse0 2147483646) 2)))) is different from false [2021-08-30 22:50:26,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:50:26,114 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2021-08-30 22:50:26,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-30 22:50:26,115 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 47 states have internal predecessors, (116), 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 40 [2021-08-30 22:50:26,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:50:26,116 INFO L225 Difference]: With dead ends: 82 [2021-08-30 22:50:26,116 INFO L226 Difference]: Without dead ends: 81 [2021-08-30 22:50:26,117 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 99686.99ms TimeCoverageRelationStatistics Valid=881, Invalid=3263, Unknown=28, NotChecked=384, Total=4556 [2021-08-30 22:50:26,118 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 160.80ms IncrementalHoareTripleChecker+Time [2021-08-30 22:50:26,118 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 431 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [41 Valid, 227 Invalid, 0 Unknown, 163 Unchecked, 160.80ms Time] [2021-08-30 22:50:26,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-08-30 22:50:26,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-08-30 22:50:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0125) internal successors, (81), 80 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:50:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2021-08-30 22:50:26,125 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 40 [2021-08-30 22:50:26,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:50:26,126 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2021-08-30 22:50:26,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.5217391304347827) internal successors, (116), 47 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:50:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2021-08-30 22:50:26,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-08-30 22:50:26,137 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:50:26,138 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1] [2021-08-30 22:50:26,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-30 22:50:26,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:50:26,353 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-08-30 22:50:26,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:50:26,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1816526833, now seen corresponding path program 4 times [2021-08-30 22:50:26,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:50:26,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593943102] [2021-08-30 22:50:26,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:50:26,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:50:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:50:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:50:26,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:50:26,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593943102] [2021-08-30 22:50:26,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593943102] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:50:26,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336196207] [2021-08-30 22:50:26,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-30 22:50:26,968 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:50:26,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:50:26,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:50:26,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-30 22:50:27,021 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-30 22:50:27,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 22:50:27,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 48 conjunts are in the unsatisfiable core [2021-08-30 22:50:27,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:50:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 22:50:28,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:53:43,654 WARN L228 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-08-30 22:53:43,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-08-30 22:53:43,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-30 22:53:43,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2021-08-30 22:53:43,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427487682] [2021-08-30 22:53:43,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-08-30 22:53:43,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:53:43,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-08-30 22:53:43,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1171, Invalid=6783, Unknown=56, NotChecked=0, Total=8010 [2021-08-30 22:53:43,658 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand has 33 states, 32 states have (on average 2.5) internal successors, (80), 33 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 22:53:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-30 22:53:43,659 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3609 ImplicationChecksByTransitivity, 155972.52ms TimeCoverageRelationStatistics Valid=1171, Invalid=6783, Unknown=56, NotChecked=0, Total=8010 [2021-08-30 22:53:43,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-08-30 22:53:43,663 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-08-30 22:53:43,664 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.01ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-08-30 22:53:43,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-08-30 22:53:43,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:53:43,865 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@1fed0788 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:863) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:779) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-30 22:53:43,868 INFO L158 Benchmark]: Toolchain (without parser) took 308077.72ms. Allocated memory was 65.0MB in the beginning and 104.9MB in the end (delta: 39.8MB). Free memory was 45.2MB in the beginning and 26.0MB in the end (delta: 19.2MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2021-08-30 22:53:43,868 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 47.3MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:53:43,869 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.08ms. Allocated memory is still 65.0MB. Free memory was 45.0MB in the beginning and 35.7MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-30 22:53:43,869 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.20ms. Allocated memory is still 65.0MB. Free memory was 35.7MB in the beginning and 34.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:53:43,869 INFO L158 Benchmark]: Boogie Preprocessor took 27.58ms. Allocated memory is still 65.0MB. Free memory was 34.2MB in the beginning and 33.3MB in the end (delta: 950.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:53:43,869 INFO L158 Benchmark]: RCFGBuilder took 244.95ms. Allocated memory is still 65.0MB. Free memory was 33.3MB in the beginning and 46.1MB in the end (delta: -12.8MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2021-08-30 22:53:43,870 INFO L158 Benchmark]: TraceAbstraction took 307560.06ms. Allocated memory was 65.0MB in the beginning and 104.9MB in the end (delta: 39.8MB). Free memory was 45.5MB in the beginning and 26.0MB in the end (delta: 19.6MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2021-08-30 22:53:43,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 47.3MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.08ms. Allocated memory is still 65.0MB. Free memory was 45.0MB in the beginning and 35.7MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.20ms. Allocated memory is still 65.0MB. Free memory was 35.7MB in the beginning and 34.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.58ms. Allocated memory is still 65.0MB. Free memory was 34.2MB in the beginning and 33.3MB in the end (delta: 950.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 244.95ms. Allocated memory is still 65.0MB. Free memory was 33.3MB in the beginning and 46.1MB in the end (delta: -12.8MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 307560.06ms. Allocated memory was 65.0MB in the beginning and 104.9MB in the end (delta: 39.8MB). Free memory was 45.5MB in the beginning and 26.0MB in the end (delta: 19.6MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@1fed0788 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@1fed0788: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...