./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:21:51,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:21:51,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:21:51,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:21:51,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:21:51,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:21:51,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:21:51,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:21:51,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:21:51,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:21:51,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:21:51,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:21:51,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:21:51,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:21:51,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:21:51,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:21:51,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:21:51,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:21:51,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:21:51,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:21:51,791 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:21:51,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:21:51,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:21:51,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:21:51,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:21:51,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:21:51,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:21:51,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:21:51,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:21:51,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:21:51,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:21:51,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:21:51,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:21:51,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:21:51,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:21:51,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:21:51,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:21:51,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:21:51,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:21:51,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:21:51,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:21:51,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:21:51,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-23 13:21:51,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:21:51,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:21:51,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:21:51,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:21:51,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:21:51,832 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:21:51,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:21:51,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:21:51,832 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:21:51,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:21:51,833 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:21:51,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:21:51,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:21:51,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:21:51,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:21:51,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:21:51,834 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:21:51,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:21:51,835 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:21:51,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:21:51,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:21:51,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:21:51,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:21:51,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:21:51,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:21:51,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:21:51,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:21:51,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:21:51,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:21:51,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:21:51,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b244382de79ee7e63c5a39dc4ba4645eb8228d285c75cf6df9353c232d1a135 [2022-07-23 13:21:52,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:21:52,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:21:52,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:21:52,055 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:21:52,055 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:21:52,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2022-07-23 13:21:52,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fea90abd/1cbd064ff1a84dfe93ad978c53941057/FLAG1cb66a8ec [2022-07-23 13:21:52,503 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:21:52,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2022-07-23 13:21:52,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fea90abd/1cbd064ff1a84dfe93ad978c53941057/FLAG1cb66a8ec [2022-07-23 13:21:52,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fea90abd/1cbd064ff1a84dfe93ad978c53941057 [2022-07-23 13:21:52,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:21:52,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:21:52,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:21:52,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:21:52,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:21:52,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12206be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52, skipping insertion in model container [2022-07-23 13:21:52,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:21:52,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:21:52,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:21:52,691 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:21:52,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:21:52,714 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:21:52,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52 WrapperNode [2022-07-23 13:21:52,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:21:52,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:21:52,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:21:52,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:21:52,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,744 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2022-07-23 13:21:52,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:21:52,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:21:52,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:21:52,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:21:52,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:21:52,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:21:52,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:21:52,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:21:52,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52" (1/1) ... [2022-07-23 13:21:52,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:21:52,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:21:52,790 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) [2022-07-23 13:21:52,793 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 [2022-07-23 13:21:52,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:21:52,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:21:52,867 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:21:52,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:21:52,947 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:21:52,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:21:52,952 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-23 13:21:52,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:21:52 BoogieIcfgContainer [2022-07-23 13:21:52,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:21:52,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:21:52,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:21:52,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:21:52,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:21:52" (1/3) ... [2022-07-23 13:21:52,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5f9b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:21:52, skipping insertion in model container [2022-07-23 13:21:52,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:21:52" (2/3) ... [2022-07-23 13:21:52,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5f9b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:21:52, skipping insertion in model container [2022-07-23 13:21:52,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:21:52" (3/3) ... [2022-07-23 13:21:52,960 INFO L111 eAbstractionObserver]: Analyzing ICFG Avery-FLOPS2006-Table1.c [2022-07-23 13:21:52,970 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:21:52,971 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-07-23 13:21:53,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:21:53,009 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c04ab61, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75d5bbf7 [2022-07-23 13:21:53,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-23 13:21:53,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 13:21:53,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:53,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 13:21:53,018 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:53,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:53,028 INFO L85 PathProgramCache]: Analyzing trace with hash 28693987, now seen corresponding path program 1 times [2022-07-23 13:21:53,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:53,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078273997] [2022-07-23 13:21:53,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:53,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:53,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:53,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078273997] [2022-07-23 13:21:53,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078273997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:21:53,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:21:53,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:21:53,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736893937] [2022-07-23 13:21:53,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:21:53,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:21:53,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:53,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:21:53,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:21:53,233 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:53,322 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-07-23 13:21:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:21:53,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-23 13:21:53,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:53,330 INFO L225 Difference]: With dead ends: 58 [2022-07-23 13:21:53,330 INFO L226 Difference]: Without dead ends: 32 [2022-07-23 13:21:53,333 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:21:53,335 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 28 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:53,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 36 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:21:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-23 13:21:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2022-07-23 13:21:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-07-23 13:21:53,380 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 5 [2022-07-23 13:21:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:53,381 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-07-23 13:21:53,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-07-23 13:21:53,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 13:21:53,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:53,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 13:21:53,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:21:53,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:53,385 INFO L85 PathProgramCache]: Analyzing trace with hash 889512267, now seen corresponding path program 1 times [2022-07-23 13:21:53,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:53,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980702201] [2022-07-23 13:21:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:53,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:53,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:53,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980702201] [2022-07-23 13:21:53,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980702201] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:21:53,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:21:53,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:21:53,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115400513] [2022-07-23 13:21:53,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:21:53,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:21:53,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:21:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:21:53,447 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:53,502 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-07-23 13:21:53,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:21:53,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-23 13:21:53,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:53,505 INFO L225 Difference]: With dead ends: 32 [2022-07-23 13:21:53,505 INFO L226 Difference]: Without dead ends: 22 [2022-07-23 13:21:53,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:21:53,507 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:53,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:21:53,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-23 13:21:53,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-07-23 13:21:53,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-07-23 13:21:53,518 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2022-07-23 13:21:53,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:53,519 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-07-23 13:21:53,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,519 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-07-23 13:21:53,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 13:21:53,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:53,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:21:53,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 13:21:53,521 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:53,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1805119269, now seen corresponding path program 1 times [2022-07-23 13:21:53,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:53,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349207227] [2022-07-23 13:21:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:53,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:53,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:53,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349207227] [2022-07-23 13:21:53,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349207227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:21:53,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:21:53,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:21:53,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995669612] [2022-07-23 13:21:53,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:21:53,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:21:53,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:53,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:21:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:21:53,569 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:53,589 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-07-23 13:21:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:21:53,590 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 [2022-07-23 13:21:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:53,592 INFO L225 Difference]: With dead ends: 25 [2022-07-23 13:21:53,592 INFO L226 Difference]: Without dead ends: 24 [2022-07-23 13:21:53,593 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:21:53,597 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:53,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 27 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:21:53,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-23 13:21:53,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-07-23 13:21:53,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-07-23 13:21:53,603 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 7 [2022-07-23 13:21:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:53,603 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-07-23 13:21:53,603 INFO L496 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) [2022-07-23 13:21:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-07-23 13:21:53,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:21:53,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:53,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:21:53,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 13:21:53,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:53,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:53,607 INFO L85 PathProgramCache]: Analyzing trace with hash 124122543, now seen corresponding path program 1 times [2022-07-23 13:21:53,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:53,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021818833] [2022-07-23 13:21:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:53,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:53,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:53,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021818833] [2022-07-23 13:21:53,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021818833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:21:53,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:21:53,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:21:53,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363320620] [2022-07-23 13:21:53,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:21:53,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:21:53,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:53,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:21:53,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:21:53,645 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:53,671 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-07-23 13:21:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:21:53,672 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 [2022-07-23 13:21:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:53,674 INFO L225 Difference]: With dead ends: 31 [2022-07-23 13:21:53,674 INFO L226 Difference]: Without dead ends: 29 [2022-07-23 13:21:53,675 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:21:53,682 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:53,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:21:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-23 13:21:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-07-23 13:21:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-07-23 13:21:53,693 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2022-07-23 13:21:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:53,694 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-07-23 13:21:53,694 INFO L496 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) [2022-07-23 13:21:53,694 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-07-23 13:21:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-23 13:21:53,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:53,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:21:53,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 13:21:53,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:53,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:53,696 INFO L85 PathProgramCache]: Analyzing trace with hash -232120963, now seen corresponding path program 1 times [2022-07-23 13:21:53,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:53,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778812511] [2022-07-23 13:21:53,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:53,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:21:53,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:53,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778812511] [2022-07-23 13:21:53,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778812511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:21:53,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:21:53,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:21:53,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404367629] [2022-07-23 13:21:53,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:21:53,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:21:53,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:53,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:21:53,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:21:53,755 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:53,771 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-07-23 13:21:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:21:53,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-23 13:21:53,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:53,775 INFO L225 Difference]: With dead ends: 28 [2022-07-23 13:21:53,775 INFO L226 Difference]: Without dead ends: 27 [2022-07-23 13:21:53,775 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:21:53,776 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:53,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:21:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-23 13:21:53,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-23 13:21:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-07-23 13:21:53,784 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 11 [2022-07-23 13:21:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:53,785 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-07-23 13:21:53,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-07-23 13:21:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-23 13:21:53,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:53,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:21:53,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 13:21:53,786 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:53,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:53,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1394184806, now seen corresponding path program 1 times [2022-07-23 13:21:53,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:53,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274311003] [2022-07-23 13:21:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:53,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:53,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:53,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274311003] [2022-07-23 13:21:53,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274311003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:21:53,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:21:53,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:21:53,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27673301] [2022-07-23 13:21:53,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:21:53,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:21:53,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:53,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:21:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:21:53,825 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:53,843 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-07-23 13:21:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:21:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-23 13:21:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:53,844 INFO L225 Difference]: With dead ends: 27 [2022-07-23 13:21:53,844 INFO L226 Difference]: Without dead ends: 26 [2022-07-23 13:21:53,844 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:21:53,845 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:53,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:21:53,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-23 13:21:53,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-23 13:21:53,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-07-23 13:21:53,849 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2022-07-23 13:21:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:53,850 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-07-23 13:21:53,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-07-23 13:21:53,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-23 13:21:53,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:53,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-23 13:21:53,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-23 13:21:53,851 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:53,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:53,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1394227507, now seen corresponding path program 1 times [2022-07-23 13:21:53,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:53,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257763436] [2022-07-23 13:21:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:53,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:53,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:53,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257763436] [2022-07-23 13:21:53,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257763436] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:21:53,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806837828] [2022-07-23 13:21:53,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:53,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:53,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:21:53,879 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) [2022-07-23 13:21:53,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 13:21:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:53,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:21:53,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:21:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:53,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:21:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:53,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806837828] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:21:53,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:21:53,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-07-23 13:21:53,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561704428] [2022-07-23 13:21:53,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:21:53,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 13:21:53,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:53,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 13:21:53,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:21:53,980 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:54,014 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2022-07-23 13:21:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:21:54,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-23 13:21:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:54,015 INFO L225 Difference]: With dead ends: 70 [2022-07-23 13:21:54,015 INFO L226 Difference]: Without dead ends: 68 [2022-07-23 13:21:54,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:21:54,016 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 46 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:54,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 49 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:21:54,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-23 13:21:54,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 51. [2022-07-23 13:21:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2022-07-23 13:21:54,022 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 12 [2022-07-23 13:21:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:54,022 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2022-07-23 13:21:54,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-07-23 13:21:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 13:21:54,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:54,023 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:21:54,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-23 13:21:54,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:54,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:54,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash 767450986, now seen corresponding path program 1 times [2022-07-23 13:21:54,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:54,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173524928] [2022-07-23 13:21:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:54,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:21:54,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:54,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173524928] [2022-07-23 13:21:54,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173524928] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:21:54,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429218910] [2022-07-23 13:21:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:54,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:54,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:21:54,301 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) [2022-07-23 13:21:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:54,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:21:54,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:21:54,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 13:21:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:21:54,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:21:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:21:54,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429218910] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:21:54,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:21:54,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-07-23 13:21:54,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452097266] [2022-07-23 13:21:54,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:21:54,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 13:21:54,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 13:21:54,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:21:54,386 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:54,432 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2022-07-23 13:21:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:21:54,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-23 13:21:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:54,434 INFO L225 Difference]: With dead ends: 81 [2022-07-23 13:21:54,434 INFO L226 Difference]: Without dead ends: 80 [2022-07-23 13:21:54,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:21:54,435 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:54,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 46 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:21:54,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-23 13:21:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2022-07-23 13:21:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 74 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2022-07-23 13:21:54,440 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 16 [2022-07-23 13:21:54,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:54,440 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2022-07-23 13:21:54,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2022-07-23 13:21:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-23 13:21:54,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:54,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:21:54,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-23 13:21:54,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-23 13:21:54,658 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:54,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1021473915, now seen corresponding path program 1 times [2022-07-23 13:21:54,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:54,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44168362] [2022-07-23 13:21:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:54,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:54,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:54,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44168362] [2022-07-23 13:21:54,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44168362] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:21:54,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072471148] [2022-07-23 13:21:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:54,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:54,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:21:54,690 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) [2022-07-23 13:21:54,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 13:21:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:54,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 13:21:54,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:21:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:54,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:21:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:54,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072471148] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:21:54,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:21:54,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-07-23 13:21:54,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700065429] [2022-07-23 13:21:54,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:21:54,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 13:21:54,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:54,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 13:21:54,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:21:54,791 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:54,820 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2022-07-23 13:21:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:21:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-23 13:21:54,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:54,822 INFO L225 Difference]: With dead ends: 82 [2022-07-23 13:21:54,822 INFO L226 Difference]: Without dead ends: 81 [2022-07-23 13:21:54,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:21:54,823 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:54,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 35 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:21:54,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-07-23 13:21:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-07-23 13:21:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 80 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:54,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2022-07-23 13:21:54,829 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 19 [2022-07-23 13:21:54,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:54,829 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2022-07-23 13:21:54,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:54,830 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2022-07-23 13:21:54,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 13:21:54,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:54,830 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-07-23 13:21:54,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 13:21:55,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:55,044 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:55,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1125896027, now seen corresponding path program 2 times [2022-07-23 13:21:55,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:55,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573073191] [2022-07-23 13:21:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:55,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:55,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:55,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573073191] [2022-07-23 13:21:55,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573073191] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:21:55,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244430915] [2022-07-23 13:21:55,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:21:55,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:55,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:21:55,120 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) [2022-07-23 13:21:55,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 13:21:55,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:21:55,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:21:55,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 13:21:55,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:21:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:55,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:21:55,245 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:55,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244430915] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:21:55,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:21:55,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-07-23 13:21:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777451196] [2022-07-23 13:21:55,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:21:55,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 13:21:55,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 13:21:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-23 13:21:55,248 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:55,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:55,311 INFO L93 Difference]: Finished difference Result 240 states and 282 transitions. [2022-07-23 13:21:55,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 13:21:55,312 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-23 13:21:55,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:55,313 INFO L225 Difference]: With dead ends: 240 [2022-07-23 13:21:55,313 INFO L226 Difference]: Without dead ends: 238 [2022-07-23 13:21:55,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-23 13:21:55,314 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 141 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:55,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 94 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:21:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-07-23 13:21:55,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 111. [2022-07-23 13:21:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 110 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2022-07-23 13:21:55,322 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 27 [2022-07-23 13:21:55,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:55,322 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2022-07-23 13:21:55,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2022-07-23 13:21:55,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-23 13:21:55,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:55,323 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:21:55,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 13:21:55,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:55,536 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:55,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:55,537 INFO L85 PathProgramCache]: Analyzing trace with hash -787231299, now seen corresponding path program 2 times [2022-07-23 13:21:55,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:55,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982095024] [2022-07-23 13:21:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:55,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-23 13:21:55,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:55,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982095024] [2022-07-23 13:21:55,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982095024] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:21:55,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384562677] [2022-07-23 13:21:55,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:21:55,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:55,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:21:55,593 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) [2022-07-23 13:21:55,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 13:21:55,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:21:55,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:21:55,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:21:55,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 13:21:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-23 13:21:55,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:21:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-23 13:21:55,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384562677] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:21:55,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:21:55,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-07-23 13:21:55,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58384633] [2022-07-23 13:21:55,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:21:55,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:21:55,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:55,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:21:55,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:21:55,707 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:55,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:55,721 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2022-07-23 13:21:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:21:55,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-07-23 13:21:55,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:55,723 INFO L225 Difference]: With dead ends: 111 [2022-07-23 13:21:55,723 INFO L226 Difference]: Without dead ends: 110 [2022-07-23 13:21:55,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:21:55,724 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:55,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:21:55,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-07-23 13:21:55,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-07-23 13:21:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 109 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2022-07-23 13:21:55,730 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 31 [2022-07-23 13:21:55,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:55,730 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2022-07-23 13:21:55,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:55,730 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2022-07-23 13:21:55,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-23 13:21:55,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:55,731 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:21:55,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-23 13:21:55,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-23 13:21:55,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:55,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:55,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1886125752, now seen corresponding path program 2 times [2022-07-23 13:21:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:55,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904624372] [2022-07-23 13:21:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:55,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:56,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:56,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904624372] [2022-07-23 13:21:56,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904624372] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:21:56,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463939581] [2022-07-23 13:21:56,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:21:56,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:56,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:21:56,025 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) [2022-07-23 13:21:56,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 13:21:56,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 13:21:56,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:21:56,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:21:56,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:21:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:56,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:21:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:56,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463939581] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:21:56,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:21:56,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-07-23 13:21:56,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689634039] [2022-07-23 13:21:56,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:21:56,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 13:21:56,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:56,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 13:21:56,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-23 13:21:56,164 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:56,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:56,213 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2022-07-23 13:21:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 13:21:56,214 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-23 13:21:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:56,215 INFO L225 Difference]: With dead ends: 171 [2022-07-23 13:21:56,215 INFO L226 Difference]: Without dead ends: 170 [2022-07-23 13:21:56,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-23 13:21:56,216 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:56,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 51 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:21:56,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-23 13:21:56,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-07-23 13:21:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 167 states have (on average 1.1437125748502994) internal successors, (191), 169 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 191 transitions. [2022-07-23 13:21:56,222 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 191 transitions. Word has length 34 [2022-07-23 13:21:56,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:56,223 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 191 transitions. [2022-07-23 13:21:56,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:56,223 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 191 transitions. [2022-07-23 13:21:56,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-23 13:21:56,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:56,224 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2022-07-23 13:21:56,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-23 13:21:56,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:56,449 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1693125349, now seen corresponding path program 3 times [2022-07-23 13:21:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:56,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302674340] [2022-07-23 13:21:56,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:56,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:56,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:56,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302674340] [2022-07-23 13:21:56,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302674340] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:21:56,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778014545] [2022-07-23 13:21:56,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:21:56,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:56,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:21:56,553 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) [2022-07-23 13:21:56,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 13:21:56,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-23 13:21:56,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:21:56,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 13:21:56,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:21:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:56,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:21:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:56,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778014545] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:21:56,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:21:56,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-07-23 13:21:56,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673661291] [2022-07-23 13:21:56,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:21:56,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-23 13:21:56,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-23 13:21:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-23 13:21:56,871 INFO L87 Difference]: Start difference. First operand 170 states and 191 transitions. Second operand has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:57,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:57,006 INFO L93 Difference]: Finished difference Result 837 states and 959 transitions. [2022-07-23 13:21:57,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-23 13:21:57,007 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-23 13:21:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:57,009 INFO L225 Difference]: With dead ends: 837 [2022-07-23 13:21:57,009 INFO L226 Difference]: Without dead ends: 835 [2022-07-23 13:21:57,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-23 13:21:57,010 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 333 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:57,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 171 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:21:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-07-23 13:21:57,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 230. [2022-07-23 13:21:57,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 227 states have (on average 1.158590308370044) internal successors, (263), 229 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:57,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 263 transitions. [2022-07-23 13:21:57,017 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 263 transitions. Word has length 57 [2022-07-23 13:21:57,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:57,018 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 263 transitions. [2022-07-23 13:21:57,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 263 transitions. [2022-07-23 13:21:57,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-23 13:21:57,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:57,019 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:21:57,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-23 13:21:57,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:57,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:57,237 INFO L85 PathProgramCache]: Analyzing trace with hash 516196584, now seen corresponding path program 3 times [2022-07-23 13:21:57,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:57,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848478098] [2022-07-23 13:21:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:57,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:57,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:57,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848478098] [2022-07-23 13:21:57,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848478098] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:21:57,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248613346] [2022-07-23 13:21:57,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 13:21:57,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:57,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:21:57,340 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:21:57,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 13:21:57,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-23 13:21:57,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:21:57,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 13:21:57,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:21:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:57,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:21:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 1 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:57,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248613346] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:21:57,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:21:57,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-07-23 13:21:57,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836259649] [2022-07-23 13:21:57,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:21:57,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-23 13:21:57,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:57,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-23 13:21:57,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-23 13:21:57,653 INFO L87 Difference]: Start difference. First operand 230 states and 263 transitions. Second operand has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 24 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:57,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:57,758 INFO L93 Difference]: Finished difference Result 351 states and 419 transitions. [2022-07-23 13:21:57,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-23 13:21:57,759 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 24 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-23 13:21:57,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:57,760 INFO L225 Difference]: With dead ends: 351 [2022-07-23 13:21:57,760 INFO L226 Difference]: Without dead ends: 350 [2022-07-23 13:21:57,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2022-07-23 13:21:57,761 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 64 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:57,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 89 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:21:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-23 13:21:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2022-07-23 13:21:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 347 states have (on average 1.138328530259366) internal successors, (395), 349 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 395 transitions. [2022-07-23 13:21:57,781 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 395 transitions. Word has length 64 [2022-07-23 13:21:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:57,782 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 395 transitions. [2022-07-23 13:21:57,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.521739130434782) internal successors, (127), 24 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:57,782 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 395 transitions. [2022-07-23 13:21:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-23 13:21:57,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:57,786 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2022-07-23 13:21:57,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 13:21:57,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-23 13:21:58,000 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:58,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:58,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1715892069, now seen corresponding path program 4 times [2022-07-23 13:21:58,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:58,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758175712] [2022-07-23 13:21:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:58,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:21:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:58,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:21:58,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758175712] [2022-07-23 13:21:58,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758175712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:21:58,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099827746] [2022-07-23 13:21:58,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:21:58,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:21:58,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:21:58,354 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:21:58,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 13:21:58,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:21:58,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:21:58,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-23 13:21:58,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:21:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:58,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:21:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:21:59,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099827746] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:21:59,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:21:59,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-07-23 13:21:59,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533434443] [2022-07-23 13:21:59,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:21:59,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-23 13:21:59,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:21:59,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-23 13:21:59,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-07-23 13:21:59,134 INFO L87 Difference]: Start difference. First operand 350 states and 395 transitions. Second operand has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:59,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:21:59,494 INFO L93 Difference]: Finished difference Result 3117 states and 3509 transitions. [2022-07-23 13:21:59,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-23 13:21:59,495 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-07-23 13:21:59,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:21:59,503 INFO L225 Difference]: With dead ends: 3117 [2022-07-23 13:21:59,503 INFO L226 Difference]: Without dead ends: 3115 [2022-07-23 13:21:59,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-07-23 13:21:59,507 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 737 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:21:59,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 344 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:21:59,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2022-07-23 13:21:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 470. [2022-07-23 13:21:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 467 states have (on average 1.1541755888650964) internal successors, (539), 469 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:59,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 539 transitions. [2022-07-23 13:21:59,545 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 539 transitions. Word has length 117 [2022-07-23 13:21:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:21:59,545 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 539 transitions. [2022-07-23 13:21:59,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:21:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 539 transitions. [2022-07-23 13:21:59,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-23 13:21:59,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:21:59,547 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:21:59,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-23 13:21:59,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-23 13:21:59,764 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:21:59,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:21:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2057023448, now seen corresponding path program 4 times [2022-07-23 13:21:59,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:21:59,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271316072] [2022-07-23 13:21:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:21:59,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:21:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:22:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:00,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:22:00,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271316072] [2022-07-23 13:22:00,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271316072] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:22:00,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963377507] [2022-07-23 13:22:00,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-23 13:22:00,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:22:00,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:22:00,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:22:00,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-23 13:22:00,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-23 13:22:00,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:22:00,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-23 13:22:00,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:22:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:00,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:22:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1 proven. 1265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:00,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963377507] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:22:00,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:22:00,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-07-23 13:22:00,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352419686] [2022-07-23 13:22:00,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:22:00,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-23 13:22:00,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:22:00,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-23 13:22:00,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-07-23 13:22:00,956 INFO L87 Difference]: Start difference. First operand 470 states and 539 transitions. Second operand has 48 states, 47 states have (on average 5.25531914893617) internal successors, (247), 48 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:22:01,223 INFO L93 Difference]: Finished difference Result 711 states and 851 transitions. [2022-07-23 13:22:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-23 13:22:01,223 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.25531914893617) internal successors, (247), 48 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-07-23 13:22:01,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:22:01,226 INFO L225 Difference]: With dead ends: 711 [2022-07-23 13:22:01,226 INFO L226 Difference]: Without dead ends: 710 [2022-07-23 13:22:01,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2022-07-23 13:22:01,228 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 119 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:22:01,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 160 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:22:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-23 13:22:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 710. [2022-07-23 13:22:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 707 states have (on average 1.1357850070721358) internal successors, (803), 709 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 803 transitions. [2022-07-23 13:22:01,245 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 803 transitions. Word has length 124 [2022-07-23 13:22:01,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:22:01,246 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 803 transitions. [2022-07-23 13:22:01,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.25531914893617) internal successors, (247), 48 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:01,246 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 803 transitions. [2022-07-23 13:22:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-23 13:22:01,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:22:01,248 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2022-07-23 13:22:01,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-23 13:22:01,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-23 13:22:01,471 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:22:01,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:22:01,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1021052827, now seen corresponding path program 5 times [2022-07-23 13:22:01,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:22:01,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124129680] [2022-07-23 13:22:01,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:22:01,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:22:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:22:02,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:02,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:22:02,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124129680] [2022-07-23 13:22:02,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124129680] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:22:02,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963611911] [2022-07-23 13:22:02,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:22:02,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:22:02,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:22:02,414 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:22:02,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-23 13:22:02,508 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-07-23 13:22:02,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:22:02,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-23 13:22:02,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:22:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:02,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:22:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:04,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963611911] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:22:04,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:22:04,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-07-23 13:22:04,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485389715] [2022-07-23 13:22:04,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:22:04,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-07-23 13:22:04,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:22:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-07-23 13:22:04,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2022-07-23 13:22:04,230 INFO L87 Difference]: Start difference. First operand 710 states and 803 transitions. Second operand has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:06,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:22:06,215 INFO L93 Difference]: Finished difference Result 11997 states and 13361 transitions. [2022-07-23 13:22:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-07-23 13:22:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2022-07-23 13:22:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:22:06,241 INFO L225 Difference]: With dead ends: 11997 [2022-07-23 13:22:06,241 INFO L226 Difference]: Without dead ends: 11995 [2022-07-23 13:22:06,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2022-07-23 13:22:06,248 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 1939 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 13:22:06,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1939 Valid, 678 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 13:22:06,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11995 states. [2022-07-23 13:22:06,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11995 to 950. [2022-07-23 13:22:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 947 states have (on average 1.1520591341077087) internal successors, (1091), 949 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1091 transitions. [2022-07-23 13:22:06,309 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1091 transitions. Word has length 237 [2022-07-23 13:22:06,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:22:06,309 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1091 transitions. [2022-07-23 13:22:06,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1091 transitions. [2022-07-23 13:22:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-07-23 13:22:06,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:22:06,312 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:22:06,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-23 13:22:06,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-23 13:22:06,529 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:22:06,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:22:06,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1115078312, now seen corresponding path program 5 times [2022-07-23 13:22:06,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:22:06,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600746183] [2022-07-23 13:22:06,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:22:06,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:22:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:22:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:07,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:22:07,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600746183] [2022-07-23 13:22:07,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600746183] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:22:07,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381344] [2022-07-23 13:22:07,282 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-23 13:22:07,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:22:07,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:22:07,295 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:22:07,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-23 13:22:07,378 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-07-23 13:22:07,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:22:07,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-23 13:22:07,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:22:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:07,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:22:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 1 proven. 5405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:09,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381344] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:22:09,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:22:09,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-07-23 13:22:09,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242991375] [2022-07-23 13:22:09,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:22:09,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-07-23 13:22:09,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:22:09,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-07-23 13:22:09,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2022-07-23 13:22:09,707 INFO L87 Difference]: Start difference. First operand 950 states and 1091 transitions. Second operand has 96 states, 95 states have (on average 5.126315789473685) internal successors, (487), 96 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:10,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:22:10,898 INFO L93 Difference]: Finished difference Result 1431 states and 1715 transitions. [2022-07-23 13:22:10,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-07-23 13:22:10,899 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.126315789473685) internal successors, (487), 96 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2022-07-23 13:22:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:22:10,902 INFO L225 Difference]: With dead ends: 1431 [2022-07-23 13:22:10,902 INFO L226 Difference]: Without dead ends: 1430 [2022-07-23 13:22:10,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2022-07-23 13:22:10,904 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 173 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:22:10,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 305 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:22:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2022-07-23 13:22:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2022-07-23 13:22:10,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1427 states have (on average 1.1345480028030834) internal successors, (1619), 1429 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1619 transitions. [2022-07-23 13:22:10,955 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1619 transitions. Word has length 244 [2022-07-23 13:22:10,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:22:10,956 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 1619 transitions. [2022-07-23 13:22:10,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.126315789473685) internal successors, (487), 96 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:10,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1619 transitions. [2022-07-23 13:22:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-07-23 13:22:10,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:22:10,977 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1, 1] [2022-07-23 13:22:11,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-23 13:22:11,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-23 13:22:11,202 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:22:11,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:22:11,202 INFO L85 PathProgramCache]: Analyzing trace with hash 351930981, now seen corresponding path program 6 times [2022-07-23 13:22:11,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:22:11,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869458629] [2022-07-23 13:22:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:22:11,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:22:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:22:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:22:13,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869458629] [2022-07-23 13:22:13,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869458629] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:22:13,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454215343] [2022-07-23 13:22:13,533 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:22:13,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:22:13,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:22:13,535 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:22:13,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-23 13:22:13,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-07-23 13:22:13,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:22:13,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-23 13:22:13,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:22:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:14,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:22:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:20,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454215343] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:22:20,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:22:20,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-07-23 13:22:20,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752979345] [2022-07-23 13:22:20,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:22:20,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-07-23 13:22:20,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:22:20,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-07-23 13:22:20,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2022-07-23 13:22:20,236 INFO L87 Difference]: Start difference. First operand 1430 states and 1619 transitions. Second operand has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:37,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:22:37,570 INFO L93 Difference]: Finished difference Result 47037 states and 52073 transitions. [2022-07-23 13:22:37,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-07-23 13:22:37,570 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 477 [2022-07-23 13:22:37,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:22:37,640 INFO L225 Difference]: With dead ends: 47037 [2022-07-23 13:22:37,641 INFO L226 Difference]: Without dead ends: 47035 [2022-07-23 13:22:37,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2022-07-23 13:22:37,661 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 4245 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4245 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-23 13:22:37,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4245 Valid, 1349 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-23 13:22:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47035 states. [2022-07-23 13:22:37,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47035 to 1910. [2022-07-23 13:22:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1907 states have (on average 1.1510225485055061) internal successors, (2195), 1909 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2195 transitions. [2022-07-23 13:22:37,846 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2195 transitions. Word has length 477 [2022-07-23 13:22:37,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:22:37,846 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 2195 transitions. [2022-07-23 13:22:37,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:22:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2195 transitions. [2022-07-23 13:22:37,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-07-23 13:22:37,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:22:37,852 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:22:37,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-23 13:22:38,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:22:38,067 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:22:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:22:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2035868760, now seen corresponding path program 6 times [2022-07-23 13:22:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:22:38,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137126819] [2022-07-23 13:22:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:22:38,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:22:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:22:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:41,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:22:41,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137126819] [2022-07-23 13:22:41,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137126819] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:22:41,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411214945] [2022-07-23 13:22:41,230 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-23 13:22:41,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:22:41,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:22:41,252 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:22:41,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-23 13:22:41,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-07-23 13:22:41,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 13:22:41,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 97 conjunts are in the unsatisfiable core [2022-07-23 13:22:41,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:22:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:42,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:22:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 22326 backedges. 1 proven. 22325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:22:48,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411214945] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:22:48,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:22:48,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-07-23 13:22:48,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381857892] [2022-07-23 13:22:48,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:22:48,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-07-23 13:22:48,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:22:48,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-07-23 13:22:48,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2022-07-23 13:22:48,756 INFO L87 Difference]: Start difference. First operand 1910 states and 2195 transitions. Second operand has 192 states, 191 states have (on average 5.06282722513089) internal successors, (967), 192 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:03,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:23:03,883 INFO L93 Difference]: Finished difference Result 2871 states and 3443 transitions. [2022-07-23 13:23:03,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-07-23 13:23:03,884 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.06282722513089) internal successors, (967), 192 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 484 [2022-07-23 13:23:03,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:23:03,888 INFO L225 Difference]: With dead ends: 2871 [2022-07-23 13:23:03,888 INFO L226 Difference]: Without dead ends: 2870 [2022-07-23 13:23:03,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2022-07-23 13:23:03,890 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 323 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1376 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-23 13:23:03,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 597 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1376 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-23 13:23:03,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2022-07-23 13:23:03,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2022-07-23 13:23:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2867 states have (on average 1.1339379141960237) internal successors, (3251), 2869 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3251 transitions. [2022-07-23 13:23:03,923 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3251 transitions. Word has length 484 [2022-07-23 13:23:03,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:23:03,924 INFO L495 AbstractCegarLoop]: Abstraction has 2870 states and 3251 transitions. [2022-07-23 13:23:03,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.06282722513089) internal successors, (967), 192 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:23:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3251 transitions. [2022-07-23 13:23:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2022-07-23 13:23:03,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:23:03,932 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1, 1] [2022-07-23 13:23:03,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-23 13:23:04,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:04,167 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-07-23 13:23:04,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:23:04,167 INFO L85 PathProgramCache]: Analyzing trace with hash 353513061, now seen corresponding path program 7 times [2022-07-23 13:23:04,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:23:04,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696709812] [2022-07-23 13:23:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:23:04,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:23:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:12,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:23:12,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696709812] [2022-07-23 13:23:12,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696709812] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 13:23:12,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110993094] [2022-07-23 13:23:12,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-23 13:23:12,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:23:12,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:23:12,643 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:23:12,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-23 13:23:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:23:12,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 192 conjunts are in the unsatisfiable core [2022-07-23 13:23:12,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:23:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:13,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:23:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:23:40,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110993094] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:23:40,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 13:23:40,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-07-23 13:23:40,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896416487] [2022-07-23 13:23:40,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 13:23:40,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-07-23 13:23:40,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:23:40,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-07-23 13:23:40,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2022-07-23 13:23:40,751 INFO L87 Difference]: Start difference. First operand 2870 states and 3251 transitions. Second operand has 384 states, 383 states have (on average 4.994778067885117) internal successors, (1913), 384 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)