./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/McCarthy91_Iteration.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/McCarthy91_Iteration.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7a5d554c80523420ffafe318e54a94b7662019572fad78d6e8fce2ccc83674b0 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:49:16,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:49:16,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:49:16,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:49:16,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:49:16,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:49:16,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:49:16,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:49:16,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:49:16,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:49:16,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:49:16,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:49:16,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:49:16,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:49:16,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:49:16,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:49:16,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:49:16,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:49:16,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:49:16,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:49:16,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:49:16,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:49:16,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:49:16,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:49:16,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:49:16,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:49:16,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:49:16,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:49:16,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:49:16,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:49:16,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:49:16,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:49:16,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:49:16,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:49:16,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:49:16,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:49:16,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:49:16,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:49:16,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:49:16,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:49:16,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:49:16,849 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-15 16:49:16,873 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:49:16,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:49:16,873 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:49:16,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:49:16,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:49:16,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:49:16,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:49:16,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:49:16,875 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:49:16,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:49:16,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:49:16,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:49:16,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:49:16,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 16:49:16,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:49:16,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 16:49:16,877 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-15 16:49:16,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:49:16,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:49:16,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 16:49:16,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:49:16,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:49:16,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:49:16,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:49:16,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:49:16,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:49:16,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 16:49:16,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:49:16,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:49:16,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 16:49:16,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:49:16,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a5d554c80523420ffafe318e54a94b7662019572fad78d6e8fce2ccc83674b0 [2021-12-15 16:49:17,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:49:17,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:49:17,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:49:17,107 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:49:17,108 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:49:17,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/McCarthy91_Iteration.c [2021-12-15 16:49:17,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d08061b3/b64a83f1a622409cb71d06c79f3b5a27/FLAG6498803d8 [2021-12-15 16:49:17,474 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:49:17,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/McCarthy91_Iteration.c [2021-12-15 16:49:17,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d08061b3/b64a83f1a622409cb71d06c79f3b5a27/FLAG6498803d8 [2021-12-15 16:49:17,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d08061b3/b64a83f1a622409cb71d06c79f3b5a27 [2021-12-15 16:49:17,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:49:17,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:49:17,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:49:17,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:49:17,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:49:17,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:49:17" (1/1) ... [2021-12-15 16:49:17,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5220d910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:17, skipping insertion in model container [2021-12-15 16:49:17,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:49:17" (1/1) ... [2021-12-15 16:49:17,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:49:17,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:49:18,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:49:18,011 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:49:18,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:49:18,030 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:49:18,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18 WrapperNode [2021-12-15 16:49:18,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:49:18,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:49:18,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:49:18,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:49:18,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,052 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2021-12-15 16:49:18,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:49:18,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:49:18,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:49:18,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:49:18,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:49:18,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:49:18,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:49:18,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:49:18,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (1/1) ... [2021-12-15 16:49:18,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:49:18,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:49:18,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 16:49:18,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 16:49:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:49:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:49:18,157 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:49:18,158 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:49:18,257 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:49:18,262 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:49:18,263 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 16:49:18,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:49:18 BoogieIcfgContainer [2021-12-15 16:49:18,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:49:18,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:49:18,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:49:18,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:49:18,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:49:17" (1/3) ... [2021-12-15 16:49:18,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298359fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:49:18, skipping insertion in model container [2021-12-15 16:49:18,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:49:18" (2/3) ... [2021-12-15 16:49:18,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298359fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:49:18, skipping insertion in model container [2021-12-15 16:49:18,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:49:18" (3/3) ... [2021-12-15 16:49:18,271 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91_Iteration.c [2021-12-15 16:49:18,274 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:49:18,275 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-15 16:49:18,312 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:49:18,320 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 16:49:18,320 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-15 16:49:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 23 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) [2021-12-15 16:49:18,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:49:18,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:18,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:49:18,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:18,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash 28700073, now seen corresponding path program 1 times [2021-12-15 16:49:18,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:18,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444630475] [2021-12-15 16:49:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:18,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:18,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:18,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:18,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444630475] [2021-12-15 16:49:18,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444630475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:49:18,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:49:18,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:49:18,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298850088] [2021-12-15 16:49:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:49:18,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:49:18,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:49:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,478 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 23 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) 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) [2021-12-15 16:49:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:18,512 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-12-15 16:49:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:49:18,516 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 [2021-12-15 16:49:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:18,521 INFO L225 Difference]: With dead ends: 28 [2021-12-15 16:49:18,521 INFO L226 Difference]: Without dead ends: 19 [2021-12-15 16:49:18,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,525 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:18,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:18,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-15 16:49:18,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-15 16:49:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-15 16:49:18,545 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2021-12-15 16:49:18,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:18,545 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-15 16:49:18,545 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) [2021-12-15 16:49:18,546 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-15 16:49:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:49:18,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:18,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:49:18,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 16:49:18,546 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:18,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:18,547 INFO L85 PathProgramCache]: Analyzing trace with hash 28699753, now seen corresponding path program 1 times [2021-12-15 16:49:18,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:18,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61025049] [2021-12-15 16:49:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:18,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:18,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:18,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61025049] [2021-12-15 16:49:18,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61025049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:49:18,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:49:18,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:49:18,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39041925] [2021-12-15 16:49:18,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:49:18,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:49:18,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:18,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:49:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,564 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. 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) [2021-12-15 16:49:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:18,582 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-12-15 16:49:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:49:18,583 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 [2021-12-15 16:49:18,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:18,583 INFO L225 Difference]: With dead ends: 28 [2021-12-15 16:49:18,583 INFO L226 Difference]: Without dead ends: 27 [2021-12-15 16:49:18,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,585 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:18,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:18,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-15 16:49:18,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-12-15 16:49:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:18,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-12-15 16:49:18,589 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 5 [2021-12-15 16:49:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:18,589 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-12-15 16:49:18,590 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) [2021-12-15 16:49:18,590 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-12-15 16:49:18,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 16:49:18,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:18,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 16:49:18,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 16:49:18,591 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:18,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:18,591 INFO L85 PathProgramCache]: Analyzing trace with hash 889702321, now seen corresponding path program 1 times [2021-12-15 16:49:18,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:18,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096052932] [2021-12-15 16:49:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:18,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:18,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:18,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096052932] [2021-12-15 16:49:18,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096052932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:49:18,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:49:18,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:49:18,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711543184] [2021-12-15 16:49:18,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:49:18,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:49:18,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:18,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:49:18,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,626 INFO L87 Difference]: Start difference. First operand 25 states and 30 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) [2021-12-15 16:49:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:18,646 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2021-12-15 16:49:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:49:18,646 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 [2021-12-15 16:49:18,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:18,647 INFO L225 Difference]: With dead ends: 25 [2021-12-15 16:49:18,647 INFO L226 Difference]: Without dead ends: 24 [2021-12-15 16:49:18,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,663 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:18,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:18,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-15 16:49:18,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-15 16:49:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-12-15 16:49:18,668 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 6 [2021-12-15 16:49:18,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:18,668 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-12-15 16:49:18,668 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) [2021-12-15 16:49:18,668 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-12-15 16:49:18,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 16:49:18,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:18,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 16:49:18,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 16:49:18,669 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:18,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:18,673 INFO L85 PathProgramCache]: Analyzing trace with hash 889692391, now seen corresponding path program 1 times [2021-12-15 16:49:18,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:18,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401652145] [2021-12-15 16:49:18,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:18,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:18,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:18,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401652145] [2021-12-15 16:49:18,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401652145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:49:18,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:49:18,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:49:18,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763367482] [2021-12-15 16:49:18,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:49:18,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:49:18,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:18,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:49:18,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,709 INFO L87 Difference]: Start difference. First operand 24 states and 29 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) [2021-12-15 16:49:18,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:18,728 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2021-12-15 16:49:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:49:18,729 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 [2021-12-15 16:49:18,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:18,729 INFO L225 Difference]: With dead ends: 24 [2021-12-15 16:49:18,730 INFO L226 Difference]: Without dead ends: 23 [2021-12-15 16:49:18,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,731 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:18,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:18,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-15 16:49:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-15 16:49:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.5) internal successors, (27), 22 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) [2021-12-15 16:49:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-12-15 16:49:18,739 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 6 [2021-12-15 16:49:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:18,739 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-12-15 16:49:18,739 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) [2021-12-15 16:49:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-12-15 16:49:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 16:49:18,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:18,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:49:18,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 16:49:18,741 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:18,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1810968235, now seen corresponding path program 1 times [2021-12-15 16:49:18,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:18,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208360966] [2021-12-15 16:49:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:18,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:18,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:18,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208360966] [2021-12-15 16:49:18,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208360966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:49:18,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:49:18,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:49:18,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309596628] [2021-12-15 16:49:18,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:49:18,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:49:18,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:18,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:49:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,771 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:18,800 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-12-15 16:49:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:49:18,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-15 16:49:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:18,801 INFO L225 Difference]: With dead ends: 29 [2021-12-15 16:49:18,801 INFO L226 Difference]: Without dead ends: 27 [2021-12-15 16:49:18,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,802 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:18,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 19 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-15 16:49:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-12-15 16:49:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.380952380952381) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-12-15 16:49:18,805 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 7 [2021-12-15 16:49:18,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:18,806 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-12-15 16:49:18,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-12-15 16:49:18,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 16:49:18,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:18,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:49:18,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 16:49:18,807 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:18,807 INFO L85 PathProgramCache]: Analyzing trace with hash 305440499, now seen corresponding path program 1 times [2021-12-15 16:49:18,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:18,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679546308] [2021-12-15 16:49:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:18,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:18,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:18,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679546308] [2021-12-15 16:49:18,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679546308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:49:18,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:49:18,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:49:18,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417325417] [2021-12-15 16:49:18,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:49:18,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:49:18,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:18,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:49:18,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,846 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:18,872 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-12-15 16:49:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:49:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 16:49:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:18,873 INFO L225 Difference]: With dead ends: 28 [2021-12-15 16:49:18,873 INFO L226 Difference]: Without dead ends: 26 [2021-12-15 16:49:18,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:49:18,875 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:18,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 10 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:18,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-15 16:49:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-12-15 16:49:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 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) [2021-12-15 16:49:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-12-15 16:49:18,878 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 8 [2021-12-15 16:49:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:18,878 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-12-15 16:49:18,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:18,879 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-12-15 16:49:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 16:49:18,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:18,879 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:49:18,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 16:49:18,880 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:18,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:18,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1657753704, now seen corresponding path program 1 times [2021-12-15 16:49:18,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:18,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952153040] [2021-12-15 16:49:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:18,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:18,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:18,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952153040] [2021-12-15 16:49:18,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952153040] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:49:18,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:49:18,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:49:18,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393882117] [2021-12-15 16:49:18,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:49:18,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:49:18,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:18,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:49:18,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:49:18,904 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:18,925 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-12-15 16:49:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:49:18,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-15 16:49:18,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:18,927 INFO L225 Difference]: With dead ends: 24 [2021-12-15 16:49:18,927 INFO L226 Difference]: Without dead ends: 23 [2021-12-15 16:49:18,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:49:18,930 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:18,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-15 16:49:18,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-15 16:49:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-12-15 16:49:18,933 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 11 [2021-12-15 16:49:18,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:18,934 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-12-15 16:49:18,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-12-15 16:49:18,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 16:49:18,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:18,935 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-12-15 16:49:18,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 16:49:18,935 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:18,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash 331866650, now seen corresponding path program 1 times [2021-12-15 16:49:18,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:18,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891031944] [2021-12-15 16:49:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:18,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:18,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:18,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891031944] [2021-12-15 16:49:18,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891031944] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:49:18,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511261851] [2021-12-15 16:49:18,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:18,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:49:18,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:49:18,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:49:18,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 16:49:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:18,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:49:18,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:49:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:19,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:49:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:19,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511261851] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:49:19,089 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:49:19,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-15 16:49:19,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811246474] [2021-12-15 16:49:19,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:49:19,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 16:49:19,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:19,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 16:49:19,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-15 16:49:19,091 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:19,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:19,124 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2021-12-15 16:49:19,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 16:49:19,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 13 [2021-12-15 16:49:19,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:19,125 INFO L225 Difference]: With dead ends: 64 [2021-12-15 16:49:19,125 INFO L226 Difference]: Without dead ends: 62 [2021-12-15 16:49:19,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-15 16:49:19,126 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:19,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 36 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:49:19,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-15 16:49:19,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2021-12-15 16:49:19,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-12-15 16:49:19,131 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 13 [2021-12-15 16:49:19,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:19,131 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-12-15 16:49:19,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-12-15 16:49:19,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-15 16:49:19,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:19,132 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2021-12-15 16:49:19,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 16:49:19,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:49:19,344 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:19,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:19,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2065850599, now seen corresponding path program 2 times [2021-12-15 16:49:19,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:19,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303192993] [2021-12-15 16:49:19,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:19,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:19,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:19,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303192993] [2021-12-15 16:49:19,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303192993] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:49:19,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968283073] [2021-12-15 16:49:19,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 16:49:19,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:49:19,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:49:19,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:49:19,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 16:49:19,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 16:49:19,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:49:19,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 16:49:19,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:49:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:19,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:49:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:19,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968283073] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:49:19,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:49:19,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-15 16:49:19,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439760880] [2021-12-15 16:49:19,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:49:19,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-15 16:49:19,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:19,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-15 16:49:19,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-15 16:49:19,616 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:19,698 INFO L93 Difference]: Finished difference Result 184 states and 221 transitions. [2021-12-15 16:49:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 16:49:19,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-15 16:49:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:19,706 INFO L225 Difference]: With dead ends: 184 [2021-12-15 16:49:19,706 INFO L226 Difference]: Without dead ends: 182 [2021-12-15 16:49:19,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-15 16:49:19,707 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 78 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:19,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 74 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:49:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-15 16:49:19,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 105. [2021-12-15 16:49:19,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 104 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) [2021-12-15 16:49:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2021-12-15 16:49:19,714 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 31 [2021-12-15 16:49:19,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:19,714 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2021-12-15 16:49:19,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:19,714 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2021-12-15 16:49:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-15 16:49:19,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:19,716 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1] [2021-12-15 16:49:19,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 16:49:19,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-15 16:49:19,916 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:19,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1486781759, now seen corresponding path program 3 times [2021-12-15 16:49:19,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:19,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208424891] [2021-12-15 16:49:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:19,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:20,043 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:20,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:20,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208424891] [2021-12-15 16:49:20,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208424891] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:49:20,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547599203] [2021-12-15 16:49:20,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 16:49:20,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:49:20,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:49:20,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:49:20,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 16:49:20,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-15 16:49:20,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:49:20,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-15 16:49:20,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:49:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:20,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:49:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:20,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547599203] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:49:20,434 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:49:20,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-15 16:49:20,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890355855] [2021-12-15 16:49:20,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:49:20,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-15 16:49:20,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:20,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-15 16:49:20,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-15 16:49:20,435 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:20,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:20,583 INFO L93 Difference]: Finished difference Result 559 states and 659 transitions. [2021-12-15 16:49:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 16:49:20,584 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 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 67 [2021-12-15 16:49:20,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:20,586 INFO L225 Difference]: With dead ends: 559 [2021-12-15 16:49:20,586 INFO L226 Difference]: Without dead ends: 557 [2021-12-15 16:49:20,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-15 16:49:20,587 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 205 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:20,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 149 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:49:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-12-15 16:49:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 225. [2021-12-15 16:49:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 223 states have (on average 1.1121076233183858) internal successors, (248), 224 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:20,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 248 transitions. [2021-12-15 16:49:20,602 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 248 transitions. Word has length 67 [2021-12-15 16:49:20,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:20,603 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 248 transitions. [2021-12-15 16:49:20,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.782608695652174) internal successors, (133), 24 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:20,603 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 248 transitions. [2021-12-15 16:49:20,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-15 16:49:20,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:20,606 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1] [2021-12-15 16:49:20,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 16:49:20,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:49:20,819 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:20,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:20,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1299650421, now seen corresponding path program 4 times [2021-12-15 16:49:20,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:20,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943697766] [2021-12-15 16:49:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:20,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:21,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:21,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943697766] [2021-12-15 16:49:21,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943697766] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:49:21,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935725778] [2021-12-15 16:49:21,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-15 16:49:21,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:49:21,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:49:21,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:49:21,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 16:49:21,201 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-15 16:49:21,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:49:21,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-15 16:49:21,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:49:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:21,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:49:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:22,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935725778] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:49:22,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:49:22,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-15 16:49:22,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268446731] [2021-12-15 16:49:22,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:49:22,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-15 16:49:22,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:22,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-15 16:49:22,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-15 16:49:22,248 INFO L87 Difference]: Start difference. First operand 225 states and 248 transitions. Second operand has 48 states, 47 states have (on average 5.8936170212765955) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:22,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:22,592 INFO L93 Difference]: Finished difference Result 1849 states and 2129 transitions. [2021-12-15 16:49:22,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-15 16:49:22,593 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.8936170212765955) internal successors, (277), 48 states have internal predecessors, (277), 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 139 [2021-12-15 16:49:22,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:22,597 INFO L225 Difference]: With dead ends: 1849 [2021-12-15 16:49:22,597 INFO L226 Difference]: Without dead ends: 1847 [2021-12-15 16:49:22,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-15 16:49:22,599 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 698 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:22,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 290 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:49:22,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2021-12-15 16:49:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 465. [2021-12-15 16:49:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 463 states have (on average 1.1058315334773219) internal successors, (512), 464 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 512 transitions. [2021-12-15 16:49:22,621 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 512 transitions. Word has length 139 [2021-12-15 16:49:22,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:22,623 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 512 transitions. [2021-12-15 16:49:22,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.8936170212765955) internal successors, (277), 48 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:22,623 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 512 transitions. [2021-12-15 16:49:22,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-12-15 16:49:22,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:22,628 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 1, 1, 1] [2021-12-15 16:49:22,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 16:49:22,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:49:22,832 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:22,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash 534086877, now seen corresponding path program 5 times [2021-12-15 16:49:22,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:22,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999165671] [2021-12-15 16:49:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:22,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:23,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:23,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999165671] [2021-12-15 16:49:23,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999165671] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:49:23,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800031110] [2021-12-15 16:49:23,687 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-15 16:49:23,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:49:23,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:49:23,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:49:23,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 16:49:23,772 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-15 16:49:23,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:49:23,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-15 16:49:23,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:49:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:24,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:49:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:26,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800031110] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:49:26,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:49:26,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-15 16:49:26,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778660218] [2021-12-15 16:49:26,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:49:26,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-15 16:49:26,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:26,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-15 16:49:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-15 16:49:26,534 INFO L87 Difference]: Start difference. First operand 465 states and 512 transitions. Second operand has 96 states, 95 states have (on average 5.947368421052632) internal successors, (565), 96 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:28,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:28,831 INFO L93 Difference]: Finished difference Result 6589 states and 7445 transitions. [2021-12-15 16:49:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-15 16:49:28,832 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.947368421052632) internal successors, (565), 96 states have internal predecessors, (565), 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 283 [2021-12-15 16:49:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:28,849 INFO L225 Difference]: With dead ends: 6589 [2021-12-15 16:49:28,849 INFO L226 Difference]: Without dead ends: 6587 [2021-12-15 16:49:28,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-15 16:49:28,853 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1937 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:28,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1937 Valid, 576 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-15 16:49:28,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6587 states. [2021-12-15 16:49:28,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6587 to 945. [2021-12-15 16:49:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 943 states have (on average 1.1028632025450689) internal successors, (1040), 944 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1040 transitions. [2021-12-15 16:49:28,897 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1040 transitions. Word has length 283 [2021-12-15 16:49:28,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:28,898 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 1040 transitions. [2021-12-15 16:49:28,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.947368421052632) internal successors, (565), 96 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:28,899 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1040 transitions. [2021-12-15 16:49:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2021-12-15 16:49:28,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:28,906 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 1, 1, 1] [2021-12-15 16:49:28,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 16:49:29,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-15 16:49:29,124 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:29,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:29,124 INFO L85 PathProgramCache]: Analyzing trace with hash 571436973, now seen corresponding path program 6 times [2021-12-15 16:49:29,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:29,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374793838] [2021-12-15 16:49:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:29,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:49:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:49:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:32,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:49:32,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374793838] [2021-12-15 16:49:32,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374793838] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:49:32,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041109775] [2021-12-15 16:49:32,108 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-15 16:49:32,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:49:32,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:49:32,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:49:32,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 16:49:32,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-15 16:49:32,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:49:32,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-15 16:49:32,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:49:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:33,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:49:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:49:41,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041109775] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:49:41,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:49:41,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-15 16:49:41,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496759407] [2021-12-15 16:49:41,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:49:41,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-15 16:49:41,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:49:41,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-15 16:49:41,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-15 16:49:41,491 INFO L87 Difference]: Start difference. First operand 945 states and 1040 transitions. Second operand has 192 states, 191 states have (on average 5.973821989528796) internal successors, (1141), 192 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:49:59,442 INFO L93 Difference]: Finished difference Result 24709 states and 27581 transitions. [2021-12-15 16:49:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-12-15 16:49:59,443 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.973821989528796) internal successors, (1141), 192 states have internal predecessors, (1141), 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 571 [2021-12-15 16:49:59,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:49:59,507 INFO L225 Difference]: With dead ends: 24709 [2021-12-15 16:49:59,507 INFO L226 Difference]: Without dead ends: 24707 [2021-12-15 16:49:59,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1236 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-15 16:49:59,520 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 3646 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 1059 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3646 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1059 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:49:59,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3646 Valid, 1158 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1059 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-15 16:49:59,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24707 states. [2021-12-15 16:49:59,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24707 to 1905. [2021-12-15 16:49:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1903 states have (on average 1.1014188124014714) internal successors, (2096), 1904 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2096 transitions. [2021-12-15 16:49:59,682 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2096 transitions. Word has length 571 [2021-12-15 16:49:59,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:49:59,683 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2096 transitions. [2021-12-15 16:49:59,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.973821989528796) internal successors, (1141), 192 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:49:59,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2096 transitions. [2021-12-15 16:49:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2021-12-15 16:49:59,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:49:59,705 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 190, 190, 1, 1, 1] [2021-12-15 16:49:59,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 16:49:59,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:49:59,928 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-12-15 16:49:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:49:59,928 INFO L85 PathProgramCache]: Analyzing trace with hash 569869645, now seen corresponding path program 7 times [2021-12-15 16:49:59,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:49:59,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471318894] [2021-12-15 16:49:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:49:59,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:50:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:50:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:50:10,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:50:10,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471318894] [2021-12-15 16:50:10,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471318894] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:50:10,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942321215] [2021-12-15 16:50:10,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-15 16:50:10,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:50:10,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:50:10,429 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:50:10,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 16:50:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:50:10,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 192 conjunts are in the unsatisfiable core [2021-12-15 16:50:10,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:50:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:50:12,385 INFO L328 TraceCheckSpWp]: Computing backward predicates...