./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6c24879c 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/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:27:18,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:27:18,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:27:18,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:27:18,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:27:18,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:27:18,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:27:18,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:27:18,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:27:18,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:27:18,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:27:18,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:27:18,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:27:18,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:27:18,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:27:18,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:27:18,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:27:18,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:27:18,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:27:18,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:27:18,663 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:27:18,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:27:18,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:27:18,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:27:18,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:27:18,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:27:18,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:27:18,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:27:18,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:27:18,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:27:18,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:27:18,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:27:18,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:27:18,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:27:18,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:27:18,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:27:18,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:27:18,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:27:18,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:27:18,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:27:18,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:27:18,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:27:18,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-13 02:27:18,711 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:27:18,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:27:18,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:27:18,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:27:18,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:27:18,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:27:18,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:27:18,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:27:18,713 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:27:18,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:27:18,714 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 02:27:18,714 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:27:18,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:27:18,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 02:27:18,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:27:18,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:27:18,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:27:18,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:27:18,715 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:27:18,715 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 02:27:18,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:27:18,716 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:27:18,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:27:18,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:27:18,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:27:18,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:27:18,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:27:18,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:27:18,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:27:18,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:27:18,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:27:18,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:27:18,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:27:18,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2022-07-13 02:27:18,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:27:18,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:27:18,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:27:18,941 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:27:18,941 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:27:18,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-07-13 02:27:18,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f80473ef/456a5a4c527844b0b1a163f87b900369/FLAGe56ad7d35 [2022-07-13 02:27:19,423 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:27:19,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-07-13 02:27:19,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f80473ef/456a5a4c527844b0b1a163f87b900369/FLAGe56ad7d35 [2022-07-13 02:27:19,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f80473ef/456a5a4c527844b0b1a163f87b900369 [2022-07-13 02:27:19,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:27:19,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:27:19,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:27:19,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:27:19,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:27:19,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:27:19" (1/1) ... [2022-07-13 02:27:19,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f28931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:19, skipping insertion in model container [2022-07-13 02:27:19,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:27:19" (1/1) ... [2022-07-13 02:27:19,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:27:19,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:27:19,985 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-07-13 02:27:20,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:27:20,139 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:27:20,149 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-07-13 02:27:20,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:27:20,214 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:27:20,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20 WrapperNode [2022-07-13 02:27:20,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:27:20,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:27:20,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:27:20,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:27:20,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20" (1/1) ... [2022-07-13 02:27:20,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20" (1/1) ... [2022-07-13 02:27:20,267 INFO L137 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2022-07-13 02:27:20,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:27:20,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:27:20,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:27:20,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:27:20,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20" (1/1) ... [2022-07-13 02:27:20,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20" (1/1) ... [2022-07-13 02:27:20,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20" (1/1) ... [2022-07-13 02:27:20,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20" (1/1) ... [2022-07-13 02:27:20,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20" (1/1) ... [2022-07-13 02:27:20,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20" (1/1) ... [2022-07-13 02:27:20,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20" (1/1) ... [2022-07-13 02:27:20,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:27:20,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:27:20,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:27:20,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:27:20,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20" (1/1) ... [2022-07-13 02:27:20,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:27:20,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:20,360 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) [2022-07-13 02:27:20,392 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 [2022-07-13 02:27:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 02:27:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-07-13 02:27:20,411 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-07-13 02:27:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 02:27:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 02:27:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 02:27:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 02:27:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 02:27:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 02:27:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:27:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:27:20,413 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 02:27:20,540 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:27:20,541 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:27:20,772 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:27:20,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:27:20,793 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-13 02:27:20,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:27:20 BoogieIcfgContainer [2022-07-13 02:27:20,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:27:20,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:27:20,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:27:20,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:27:20,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:27:19" (1/3) ... [2022-07-13 02:27:20,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f2b04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:27:20, skipping insertion in model container [2022-07-13 02:27:20,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:27:20" (2/3) ... [2022-07-13 02:27:20,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f2b04c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:27:20, skipping insertion in model container [2022-07-13 02:27:20,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:27:20" (3/3) ... [2022-07-13 02:27:20,803 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-07-13 02:27:20,806 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 02:27:20,814 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:27:20,814 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-13 02:27:20,814 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 02:27:20,886 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 02:27:20,915 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-13 02:27:20,923 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 152 transitions, 309 flow [2022-07-13 02:27:20,925 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 152 transitions, 309 flow [2022-07-13 02:27:20,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 152 transitions, 309 flow [2022-07-13 02:27:20,986 INFO L129 PetriNetUnfolder]: 10/151 cut-off events. [2022-07-13 02:27:20,986 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 02:27:20,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 151 events. 10/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 268 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-07-13 02:27:21,020 INFO L116 LiptonReduction]: Number of co-enabled transitions 5888 [2022-07-13 02:27:24,956 INFO L131 LiptonReduction]: Checked pairs total: 7597 [2022-07-13 02:27:24,956 INFO L133 LiptonReduction]: Total number of compositions: 156 [2022-07-13 02:27:24,963 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 32 transitions, 69 flow [2022-07-13 02:27:24,978 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 157 states, 143 states have (on average 2.5384615384615383) internal successors, (363), 156 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:24,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:27:24,993 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@4e52f063, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@11c6eb5 [2022-07-13 02:27:24,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-07-13 02:27:24,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 143 states have (on average 2.5384615384615383) internal successors, (363), 156 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-13 02:27:24,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:24,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-13 02:27:24,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash 18411403, now seen corresponding path program 1 times [2022-07-13 02:27:25,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:25,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480651949] [2022-07-13 02:27:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:25,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:25,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:25,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480651949] [2022-07-13 02:27:25,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480651949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:27:25,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:27:25,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-13 02:27:25,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322062033] [2022-07-13 02:27:25,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:25,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:27:25,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:27:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:27:25,160 INFO L87 Difference]: Start difference. First operand has 157 states, 143 states have (on average 2.5384615384615383) internal successors, (363), 156 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:25,216 INFO L93 Difference]: Finished difference Result 254 states and 575 transitions. [2022-07-13 02:27:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:27:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2022-07-13 02:27:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:25,225 INFO L225 Difference]: With dead ends: 254 [2022-07-13 02:27:25,225 INFO L226 Difference]: Without dead ends: 254 [2022-07-13 02:27:25,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:27:25,228 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 21 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:25,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:27:25,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-13 02:27:25,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 194. [2022-07-13 02:27:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 184 states have (on average 2.5706521739130435) internal successors, (473), 193 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) [2022-07-13 02:27:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 473 transitions. [2022-07-13 02:27:25,258 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 473 transitions. Word has length 4 [2022-07-13 02:27:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:25,259 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 473 transitions. [2022-07-13 02:27:25,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:25,259 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 473 transitions. [2022-07-13 02:27:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 02:27:25,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:25,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-13 02:27:25,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:27:25,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash 513489469, now seen corresponding path program 1 times [2022-07-13 02:27:25,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:25,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072854329] [2022-07-13 02:27:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:25,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:25,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:25,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072854329] [2022-07-13 02:27:25,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072854329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:27:25,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:27:25,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:27:25,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511778421] [2022-07-13 02:27:25,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:25,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:27:25,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:25,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:27:25,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:27:25,333 INFO L87 Difference]: Start difference. First operand 194 states and 473 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:25,392 INFO L93 Difference]: Finished difference Result 223 states and 527 transitions. [2022-07-13 02:27:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:27:25,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-13 02:27:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:25,396 INFO L225 Difference]: With dead ends: 223 [2022-07-13 02:27:25,397 INFO L226 Difference]: Without dead ends: 223 [2022-07-13 02:27:25,397 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 [2022-07-13 02:27:25,398 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:25,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:27:25,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-07-13 02:27:25,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 203. [2022-07-13 02:27:25,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 193 states have (on average 2.5544041450777204) internal successors, (493), 202 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 493 transitions. [2022-07-13 02:27:25,407 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 493 transitions. Word has length 6 [2022-07-13 02:27:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:25,407 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 493 transitions. [2022-07-13 02:27:25,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 493 transitions. [2022-07-13 02:27:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 02:27:25,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:25,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:25,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:27:25,408 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:25,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1261693740, now seen corresponding path program 1 times [2022-07-13 02:27:25,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:25,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597699910] [2022-07-13 02:27:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:25,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:25,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:25,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597699910] [2022-07-13 02:27:25,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597699910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:27:25,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:27:25,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:27:25,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187614880] [2022-07-13 02:27:25,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:25,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:27:25,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:25,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:27:25,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:27:25,437 INFO L87 Difference]: Start difference. First operand 203 states and 493 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) [2022-07-13 02:27:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:25,483 INFO L93 Difference]: Finished difference Result 358 states and 862 transitions. [2022-07-13 02:27:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:27:25,484 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 [2022-07-13 02:27:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:25,485 INFO L225 Difference]: With dead ends: 358 [2022-07-13 02:27:25,485 INFO L226 Difference]: Without dead ends: 358 [2022-07-13 02:27:25,486 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 [2022-07-13 02:27:25,487 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:25,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 5 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:27:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-13 02:27:25,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 327. [2022-07-13 02:27:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 317 states have (on average 2.6025236593059935) internal successors, (825), 326 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 825 transitions. [2022-07-13 02:27:25,498 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 825 transitions. Word has length 7 [2022-07-13 02:27:25,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:25,498 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 825 transitions. [2022-07-13 02:27:25,498 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) [2022-07-13 02:27:25,498 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 825 transitions. [2022-07-13 02:27:25,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 02:27:25,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:25,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:25,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 02:27:25,499 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:25,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:25,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1161298310, now seen corresponding path program 1 times [2022-07-13 02:27:25,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:25,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688324280] [2022-07-13 02:27:25,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:25,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:25,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:25,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688324280] [2022-07-13 02:27:25,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688324280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:27:25,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:27:25,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:27:25,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143887724] [2022-07-13 02:27:25,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:25,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:27:25,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:25,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:27:25,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:27:25,531 INFO L87 Difference]: Start difference. First operand 327 states and 825 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) [2022-07-13 02:27:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:25,587 INFO L93 Difference]: Finished difference Result 405 states and 1000 transitions. [2022-07-13 02:27:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:27:25,587 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 [2022-07-13 02:27:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:25,589 INFO L225 Difference]: With dead ends: 405 [2022-07-13 02:27:25,589 INFO L226 Difference]: Without dead ends: 405 [2022-07-13 02:27:25,590 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 [2022-07-13 02:27:25,590 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:25,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:27:25,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-13 02:27:25,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 348. [2022-07-13 02:27:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 339 states have (on average 2.6135693215339235) internal successors, (886), 347 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 886 transitions. [2022-07-13 02:27:25,600 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 886 transitions. Word has length 8 [2022-07-13 02:27:25,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:25,600 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 886 transitions. [2022-07-13 02:27:25,601 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) [2022-07-13 02:27:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 886 transitions. [2022-07-13 02:27:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-13 02:27:25,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:25,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:25,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 02:27:25,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:25,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1161298325, now seen corresponding path program 1 times [2022-07-13 02:27:25,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:25,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463819839] [2022-07-13 02:27:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:25,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:25,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:25,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463819839] [2022-07-13 02:27:25,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463819839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:27:25,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:27:25,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:27:25,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119988303] [2022-07-13 02:27:25,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:25,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:27:25,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:25,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:27:25,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:27:25,667 INFO L87 Difference]: Start difference. First operand 348 states and 886 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-07-13 02:27:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:25,796 INFO L93 Difference]: Finished difference Result 421 states and 958 transitions. [2022-07-13 02:27:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:27:25,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2022-07-13 02:27:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:25,798 INFO L225 Difference]: With dead ends: 421 [2022-07-13 02:27:25,798 INFO L226 Difference]: Without dead ends: 414 [2022-07-13 02:27:25,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:27:25,799 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 70 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:25,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 4 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:27:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-07-13 02:27:25,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 350. [2022-07-13 02:27:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 341 states have (on average 2.4252199413489737) internal successors, (827), 349 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 827 transitions. [2022-07-13 02:27:25,806 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 827 transitions. Word has length 8 [2022-07-13 02:27:25,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:25,807 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 827 transitions. [2022-07-13 02:27:25,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-07-13 02:27:25,807 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 827 transitions. [2022-07-13 02:27:25,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 02:27:25,808 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:25,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:25,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 02:27:25,808 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2111650390, now seen corresponding path program 1 times [2022-07-13 02:27:25,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:25,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091792972] [2022-07-13 02:27:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:25,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:25,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:25,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091792972] [2022-07-13 02:27:25,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091792972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:27:25,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:27:25,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:27:25,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161093111] [2022-07-13 02:27:25,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:25,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:27:25,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:25,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:27:25,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:27:25,866 INFO L87 Difference]: Start difference. First operand 350 states and 827 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:25,900 INFO L93 Difference]: Finished difference Result 322 states and 766 transitions. [2022-07-13 02:27:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:27:25,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-13 02:27:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:25,902 INFO L225 Difference]: With dead ends: 322 [2022-07-13 02:27:25,902 INFO L226 Difference]: Without dead ends: 322 [2022-07-13 02:27:25,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:27:25,903 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 28 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:25,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 4 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:27:25,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-07-13 02:27:25,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 312. [2022-07-13 02:27:25,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 305 states have (on average 2.4262295081967213) internal successors, (740), 311 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 740 transitions. [2022-07-13 02:27:25,910 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 740 transitions. Word has length 10 [2022-07-13 02:27:25,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:25,910 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 740 transitions. [2022-07-13 02:27:25,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:25,910 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 740 transitions. [2022-07-13 02:27:25,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:27:25,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:25,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:27:25,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 02:27:25,911 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:25,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1712436462, now seen corresponding path program 1 times [2022-07-13 02:27:25,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:25,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921058590] [2022-07-13 02:27:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:25,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:25,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:25,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921058590] [2022-07-13 02:27:25,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921058590] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:25,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154185621] [2022-07-13 02:27:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:25,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:25,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:25,941 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) [2022-07-13 02:27:25,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 02:27:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:26,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 02:27:26,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:26,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:26,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154185621] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:27:26,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:27:26,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-07-13 02:27:26,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551431955] [2022-07-13 02:27:26,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:27:26,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 02:27:26,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 02:27:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:27:26,062 INFO L87 Difference]: Start difference. First operand 312 states and 740 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:26,178 INFO L93 Difference]: Finished difference Result 888 states and 2203 transitions. [2022-07-13 02:27:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:27:26,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-13 02:27:26,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:26,182 INFO L225 Difference]: With dead ends: 888 [2022-07-13 02:27:26,183 INFO L226 Difference]: Without dead ends: 888 [2022-07-13 02:27:26,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-13 02:27:26,183 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 139 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:26,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 13 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:27:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2022-07-13 02:27:26,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 805. [2022-07-13 02:27:26,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 798 states have (on average 2.6315789473684212) internal successors, (2100), 804 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2100 transitions. [2022-07-13 02:27:26,198 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2100 transitions. Word has length 11 [2022-07-13 02:27:26,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:26,199 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 2100 transitions. [2022-07-13 02:27:26,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2100 transitions. [2022-07-13 02:27:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 02:27:26,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:26,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-07-13 02:27:26,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 02:27:26,416 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 [2022-07-13 02:27:26,416 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:26,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1712436405, now seen corresponding path program 1 times [2022-07-13 02:27:26,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:26,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050689695] [2022-07-13 02:27:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:26,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:26,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:26,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050689695] [2022-07-13 02:27:26,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050689695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:27:26,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:27:26,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:27:26,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440030323] [2022-07-13 02:27:26,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:26,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:27:26,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:26,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:27:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:27:26,447 INFO L87 Difference]: Start difference. First operand 805 states and 2100 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) [2022-07-13 02:27:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:26,473 INFO L93 Difference]: Finished difference Result 781 states and 1972 transitions. [2022-07-13 02:27:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:27:26,473 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 [2022-07-13 02:27:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:26,476 INFO L225 Difference]: With dead ends: 781 [2022-07-13 02:27:26,476 INFO L226 Difference]: Without dead ends: 781 [2022-07-13 02:27:26,477 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 [2022-07-13 02:27:26,477 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:26,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 4 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:27:26,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-07-13 02:27:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 781. [2022-07-13 02:27:26,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 776 states have (on average 2.5412371134020617) internal successors, (1972), 780 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1972 transitions. [2022-07-13 02:27:26,490 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1972 transitions. Word has length 11 [2022-07-13 02:27:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:26,490 INFO L495 AbstractCegarLoop]: Abstraction has 781 states and 1972 transitions. [2022-07-13 02:27:26,505 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) [2022-07-13 02:27:26,505 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1972 transitions. [2022-07-13 02:27:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-13 02:27:26,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:26,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:26,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 02:27:26,507 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:26,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash -859306733, now seen corresponding path program 1 times [2022-07-13 02:27:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:26,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852923945] [2022-07-13 02:27:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:26,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:26,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:26,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852923945] [2022-07-13 02:27:26,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852923945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:27:26,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:27:26,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:27:26,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321505840] [2022-07-13 02:27:26,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:26,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:27:26,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:27:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:27:26,540 INFO L87 Difference]: Start difference. First operand 781 states and 1972 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:26,606 INFO L93 Difference]: Finished difference Result 776 states and 1934 transitions. [2022-07-13 02:27:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:27:26,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-13 02:27:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:26,609 INFO L225 Difference]: With dead ends: 776 [2022-07-13 02:27:26,609 INFO L226 Difference]: Without dead ends: 763 [2022-07-13 02:27:26,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:27:26,610 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 58 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:26,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 5 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:27:26,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-07-13 02:27:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 533. [2022-07-13 02:27:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 531 states have (on average 2.3691148775894537) internal successors, (1258), 532 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 1258 transitions. [2022-07-13 02:27:26,620 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 1258 transitions. Word has length 13 [2022-07-13 02:27:26,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:26,620 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 1258 transitions. [2022-07-13 02:27:26,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:26,620 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 1258 transitions. [2022-07-13 02:27:26,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:27:26,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:26,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:26,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 02:27:26,622 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:26,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:26,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1977281448, now seen corresponding path program 1 times [2022-07-13 02:27:26,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:26,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809923307] [2022-07-13 02:27:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:26,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:26,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:26,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809923307] [2022-07-13 02:27:26,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809923307] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:26,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888809660] [2022-07-13 02:27:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:26,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:26,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:26,706 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) [2022-07-13 02:27:26,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 02:27:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:26,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-13 02:27:26,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:26,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 02:27:26,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-13 02:27:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:27,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:27,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888809660] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:27,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:27:27,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 7] total 17 [2022-07-13 02:27:27,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252029367] [2022-07-13 02:27:27,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:27,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:27:27,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:27,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:27:27,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:27:27,173 INFO L87 Difference]: Start difference. First operand 533 states and 1258 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:27,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:27,255 INFO L93 Difference]: Finished difference Result 649 states and 1512 transitions. [2022-07-13 02:27:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:27:27,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 02:27:27,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:27,261 INFO L225 Difference]: With dead ends: 649 [2022-07-13 02:27:27,261 INFO L226 Difference]: Without dead ends: 649 [2022-07-13 02:27:27,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2022-07-13 02:27:27,262 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:27,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 7 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 91 Unchecked, 0.0s Time] [2022-07-13 02:27:27,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-13 02:27:27,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 552. [2022-07-13 02:27:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 550 states have (on average 2.3654545454545453) internal successors, (1301), 551 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1301 transitions. [2022-07-13 02:27:27,271 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1301 transitions. Word has length 19 [2022-07-13 02:27:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:27,272 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 1301 transitions. [2022-07-13 02:27:27,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1301 transitions. [2022-07-13 02:27:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:27:27,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:27,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:27,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 02:27:27,487 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,SelfDestructingSolverStorable9 [2022-07-13 02:27:27,488 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:27,488 INFO L85 PathProgramCache]: Analyzing trace with hash 412647555, now seen corresponding path program 1 times [2022-07-13 02:27:27,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:27,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714932534] [2022-07-13 02:27:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:27,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:27,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:27,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714932534] [2022-07-13 02:27:27,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714932534] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:27,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720734739] [2022-07-13 02:27:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:27,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:27,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:27,571 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) [2022-07-13 02:27:27,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 02:27:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:27,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-13 02:27:27,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:27,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 02:27:27,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-13 02:27:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:27,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:28,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720734739] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:28,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:27:28,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 7] total 17 [2022-07-13 02:27:28,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639880184] [2022-07-13 02:27:28,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:28,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:27:28,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:28,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:27:28,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:27:28,042 INFO L87 Difference]: Start difference. First operand 552 states and 1301 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:28,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:28,060 INFO L93 Difference]: Finished difference Result 730 states and 1779 transitions. [2022-07-13 02:27:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:27:28,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 02:27:28,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:28,063 INFO L225 Difference]: With dead ends: 730 [2022-07-13 02:27:28,063 INFO L226 Difference]: Without dead ends: 730 [2022-07-13 02:27:28,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:27:28,063 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:28,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 85 Unchecked, 0.0s Time] [2022-07-13 02:27:28,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-07-13 02:27:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 673. [2022-07-13 02:27:28,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 671 states have (on average 2.4470938897168404) internal successors, (1642), 672 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:28,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1642 transitions. [2022-07-13 02:27:28,075 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1642 transitions. Word has length 19 [2022-07-13 02:27:28,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:28,075 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1642 transitions. [2022-07-13 02:27:28,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:28,075 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1642 transitions. [2022-07-13 02:27:28,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:27:28,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:28,076 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:28,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 02:27:28,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:28,293 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:28,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:28,293 INFO L85 PathProgramCache]: Analyzing trace with hash 412956192, now seen corresponding path program 2 times [2022-07-13 02:27:28,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:28,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595350016] [2022-07-13 02:27:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:28,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:27:28,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:28,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595350016] [2022-07-13 02:27:28,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595350016] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:28,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431558700] [2022-07-13 02:27:28,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:27:28,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:28,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:28,380 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) [2022-07-13 02:27:28,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 02:27:28,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 02:27:28,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:27:28,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-13 02:27:28,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:28,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-13 02:27:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:27:28,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:28,790 INFO L356 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-07-13 02:27:28,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 1 [2022-07-13 02:27:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 02:27:28,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431558700] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:28,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:27:28,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 15 [2022-07-13 02:27:28,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813017485] [2022-07-13 02:27:28,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:28,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:27:28,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:28,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:27:28,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:27:28,795 INFO L87 Difference]: Start difference. First operand 673 states and 1642 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:28,885 INFO L93 Difference]: Finished difference Result 789 states and 1898 transitions. [2022-07-13 02:27:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:27:28,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 02:27:28,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:28,889 INFO L225 Difference]: With dead ends: 789 [2022-07-13 02:27:28,889 INFO L226 Difference]: Without dead ends: 789 [2022-07-13 02:27:28,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:27:28,889 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:28,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 64 Unchecked, 0.1s Time] [2022-07-13 02:27:28,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-07-13 02:27:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 701. [2022-07-13 02:27:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 699 states have (on average 2.440629470672389) internal successors, (1706), 700 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1706 transitions. [2022-07-13 02:27:28,915 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1706 transitions. Word has length 19 [2022-07-13 02:27:28,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:28,916 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1706 transitions. [2022-07-13 02:27:28,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:28,916 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1706 transitions. [2022-07-13 02:27:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:27:28,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:28,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:28,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 02:27:29,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:29,118 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:29,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:29,118 INFO L85 PathProgramCache]: Analyzing trace with hash 414340032, now seen corresponding path program 3 times [2022-07-13 02:27:29,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:29,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106717478] [2022-07-13 02:27:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:29,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:29,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:29,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106717478] [2022-07-13 02:27:29,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106717478] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:29,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367716346] [2022-07-13 02:27:29,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:27:29,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:29,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:29,377 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) [2022-07-13 02:27:29,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 02:27:29,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-13 02:27:29,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:27:29,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-13 02:27:29,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:29,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-13 02:27:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:27:29,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:29,835 INFO L356 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-07-13 02:27:29,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 1 [2022-07-13 02:27:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:27:29,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367716346] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:29,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:27:29,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11, 6] total 20 [2022-07-13 02:27:29,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128863311] [2022-07-13 02:27:29,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:29,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:27:29,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:27:29,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-07-13 02:27:29,838 INFO L87 Difference]: Start difference. First operand 701 states and 1706 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:29,912 INFO L93 Difference]: Finished difference Result 842 states and 2014 transitions. [2022-07-13 02:27:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:27:29,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 02:27:29,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:29,916 INFO L225 Difference]: With dead ends: 842 [2022-07-13 02:27:29,916 INFO L226 Difference]: Without dead ends: 842 [2022-07-13 02:27:29,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-07-13 02:27:29,917 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:29,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 7 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 77 Unchecked, 0.0s Time] [2022-07-13 02:27:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-07-13 02:27:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 700. [2022-07-13 02:27:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 698 states have (on average 2.4398280802292263) internal successors, (1703), 699 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:29,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1703 transitions. [2022-07-13 02:27:29,931 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1703 transitions. Word has length 19 [2022-07-13 02:27:29,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:29,931 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1703 transitions. [2022-07-13 02:27:29,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:29,931 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1703 transitions. [2022-07-13 02:27:29,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:27:29,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:29,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:29,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 02:27:30,146 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,SelfDestructingSolverStorable12 [2022-07-13 02:27:30,146 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:30,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:30,146 INFO L85 PathProgramCache]: Analyzing trace with hash 940972013, now seen corresponding path program 2 times [2022-07-13 02:27:30,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:30,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931488672] [2022-07-13 02:27:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:30,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:30,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:30,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931488672] [2022-07-13 02:27:30,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931488672] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:30,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131468060] [2022-07-13 02:27:30,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:27:30,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:30,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:30,265 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) [2022-07-13 02:27:30,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 02:27:30,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 02:27:30,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:27:30,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 02:27:30,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:30,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-13 02:27:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:27:30,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:30,585 INFO L356 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-07-13 02:27:30,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 1 [2022-07-13 02:27:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:27:30,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131468060] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:30,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:27:30,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 6] total 17 [2022-07-13 02:27:30,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623019432] [2022-07-13 02:27:30,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:30,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:27:30,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:30,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:27:30,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:27:30,588 INFO L87 Difference]: Start difference. First operand 700 states and 1703 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:30,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:30,634 INFO L93 Difference]: Finished difference Result 732 states and 1782 transitions. [2022-07-13 02:27:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:27:30,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 02:27:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:30,637 INFO L225 Difference]: With dead ends: 732 [2022-07-13 02:27:30,637 INFO L226 Difference]: Without dead ends: 729 [2022-07-13 02:27:30,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-13 02:27:30,637 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 19 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:30,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 61 Unchecked, 0.0s Time] [2022-07-13 02:27:30,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-07-13 02:27:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 533. [2022-07-13 02:27:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 531 states have (on average 2.3804143126177024) internal successors, (1264), 532 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 1264 transitions. [2022-07-13 02:27:30,647 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 1264 transitions. Word has length 19 [2022-07-13 02:27:30,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:30,647 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 1264 transitions. [2022-07-13 02:27:30,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:30,648 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 1264 transitions. [2022-07-13 02:27:30,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:27:30,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:30,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:30,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 02:27:30,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:30,865 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:30,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:30,866 INFO L85 PathProgramCache]: Analyzing trace with hash 865754543, now seen corresponding path program 3 times [2022-07-13 02:27:30,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:30,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127121803] [2022-07-13 02:27:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:30,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:30,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127121803] [2022-07-13 02:27:30,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127121803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:30,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831364724] [2022-07-13 02:27:30,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:27:30,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:30,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:30,934 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) [2022-07-13 02:27:30,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 02:27:31,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-13 02:27:31,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:27:31,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 02:27:31,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:31,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-13 02:27:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:27:31,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:31,234 INFO L356 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-07-13 02:27:31,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 1 [2022-07-13 02:27:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 02:27:31,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831364724] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:31,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 02:27:31,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 15 [2022-07-13 02:27:31,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702405525] [2022-07-13 02:27:31,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:31,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 02:27:31,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:31,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 02:27:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-13 02:27:31,237 INFO L87 Difference]: Start difference. First operand 533 states and 1264 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:31,321 INFO L93 Difference]: Finished difference Result 801 states and 1886 transitions. [2022-07-13 02:27:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:27:31,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 02:27:31,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:31,325 INFO L225 Difference]: With dead ends: 801 [2022-07-13 02:27:31,325 INFO L226 Difference]: Without dead ends: 800 [2022-07-13 02:27:31,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-07-13 02:27:31,325 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:31,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 88 Unchecked, 0.0s Time] [2022-07-13 02:27:31,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-07-13 02:27:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 561. [2022-07-13 02:27:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 559 states have (on average 2.4114490161001787) internal successors, (1348), 560 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1348 transitions. [2022-07-13 02:27:31,336 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1348 transitions. Word has length 19 [2022-07-13 02:27:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:31,336 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 1348 transitions. [2022-07-13 02:27:31,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:31,337 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1348 transitions. [2022-07-13 02:27:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 02:27:31,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:31,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:31,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 02:27:31,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:31,556 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:31,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1750161167, now seen corresponding path program 4 times [2022-07-13 02:27:31,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:31,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681237323] [2022-07-13 02:27:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:31,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:31,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:31,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681237323] [2022-07-13 02:27:31,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681237323] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:31,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999433428] [2022-07-13 02:27:31,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:27:31,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:31,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:31,650 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) [2022-07-13 02:27:31,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 02:27:31,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:27:31,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:27:31,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 02:27:31,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:31,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 02:27:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 02:27:31,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 02:27:31,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999433428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:27:31,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 02:27:31,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-13 02:27:31,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875829850] [2022-07-13 02:27:31,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:27:31,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:27:31,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:31,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:27:31,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:27:31,745 INFO L87 Difference]: Start difference. First operand 561 states and 1348 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2022-07-13 02:27:31,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:31,773 INFO L93 Difference]: Finished difference Result 212 states and 385 transitions. [2022-07-13 02:27:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:27:31,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 19 [2022-07-13 02:27:31,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:31,774 INFO L225 Difference]: With dead ends: 212 [2022-07-13 02:27:31,774 INFO L226 Difference]: Without dead ends: 192 [2022-07-13 02:27:31,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:27:31,775 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:31,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:27:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-13 02:27:31,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 176. [2022-07-13 02:27:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 176 states have (on average 1.7670454545454546) internal successors, (311), 175 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:31,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 311 transitions. [2022-07-13 02:27:31,779 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 311 transitions. Word has length 19 [2022-07-13 02:27:31,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:31,780 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 311 transitions. [2022-07-13 02:27:31,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2022-07-13 02:27:31,780 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 311 transitions. [2022-07-13 02:27:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-13 02:27:31,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:31,781 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1] [2022-07-13 02:27:31,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 02:27:31,995 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,SelfDestructingSolverStorable15 [2022-07-13 02:27:31,995 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:31,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:31,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1093987380, now seen corresponding path program 2 times [2022-07-13 02:27:31,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:31,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654701467] [2022-07-13 02:27:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:31,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:32,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:32,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654701467] [2022-07-13 02:27:32,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654701467] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:32,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130479416] [2022-07-13 02:27:32,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:27:32,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:32,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:32,076 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) [2022-07-13 02:27:32,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 02:27:32,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 02:27:32,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:27:32,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 02:27:32,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:32,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-13 02:27:32,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 02:27:32,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-13 02:27:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 02:27:32,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 02:27:32,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130479416] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:27:32,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:27:32,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 11 [2022-07-13 02:27:32,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624570659] [2022-07-13 02:27:32,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:27:32,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 02:27:32,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:32,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 02:27:32,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-13 02:27:32,328 INFO L87 Difference]: Start difference. First operand 176 states and 311 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:32,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:32,519 INFO L93 Difference]: Finished difference Result 166 states and 290 transitions. [2022-07-13 02:27:32,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 02:27:32,519 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-13 02:27:32,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:32,520 INFO L225 Difference]: With dead ends: 166 [2022-07-13 02:27:32,520 INFO L226 Difference]: Without dead ends: 164 [2022-07-13 02:27:32,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-07-13 02:27:32,521 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 117 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:32,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 24 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:27:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-13 02:27:32,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-07-13 02:27:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 164 states have (on average 1.75) internal successors, (287), 163 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 287 transitions. [2022-07-13 02:27:32,523 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 287 transitions. Word has length 23 [2022-07-13 02:27:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:32,524 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 287 transitions. [2022-07-13 02:27:32,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 287 transitions. [2022-07-13 02:27:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-13 02:27:32,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:32,524 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:32,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 02:27:32,730 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,SelfDestructingSolverStorable16 [2022-07-13 02:27:32,731 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1490257697, now seen corresponding path program 1 times [2022-07-13 02:27:32,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:32,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491808668] [2022-07-13 02:27:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:32,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:32,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:32,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491808668] [2022-07-13 02:27:32,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491808668] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:32,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94829651] [2022-07-13 02:27:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:32,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:32,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:32,803 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) [2022-07-13 02:27:32,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 02:27:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:32,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 02:27:32,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:32,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:33,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94829651] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:27:33,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:27:33,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-07-13 02:27:33,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412928123] [2022-07-13 02:27:33,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:27:33,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 02:27:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:33,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 02:27:33,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-07-13 02:27:33,039 INFO L87 Difference]: Start difference. First operand 164 states and 287 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:33,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:33,327 INFO L93 Difference]: Finished difference Result 360 states and 623 transitions. [2022-07-13 02:27:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 02:27:33,327 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-07-13 02:27:33,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:33,328 INFO L225 Difference]: With dead ends: 360 [2022-07-13 02:27:33,329 INFO L226 Difference]: Without dead ends: 346 [2022-07-13 02:27:33,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-07-13 02:27:33,329 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 283 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:33,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 34 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 02:27:33,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-07-13 02:27:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2022-07-13 02:27:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 346 states have (on average 1.739884393063584) internal successors, (602), 345 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 602 transitions. [2022-07-13 02:27:33,337 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 602 transitions. Word has length 29 [2022-07-13 02:27:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:33,337 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 602 transitions. [2022-07-13 02:27:33,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 602 transitions. [2022-07-13 02:27:33,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 02:27:33,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:33,338 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:33,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 02:27:33,559 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,SelfDestructingSolverStorable17 [2022-07-13 02:27:33,560 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:33,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:33,560 INFO L85 PathProgramCache]: Analyzing trace with hash 104776275, now seen corresponding path program 2 times [2022-07-13 02:27:33,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:33,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443692147] [2022-07-13 02:27:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:33,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:33,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:33,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443692147] [2022-07-13 02:27:33,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443692147] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:33,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542204717] [2022-07-13 02:27:33,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:27:33,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:33,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:33,772 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) [2022-07-13 02:27:33,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 02:27:33,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:27:33,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:27:33,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 02:27:33,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:33,982 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:33,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:34,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542204717] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:27:34,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:27:34,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2022-07-13 02:27:34,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085527957] [2022-07-13 02:27:34,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:27:34,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-13 02:27:34,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:34,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-13 02:27:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2022-07-13 02:27:34,250 INFO L87 Difference]: Start difference. First operand 346 states and 602 transitions. Second operand has 29 states, 28 states have (on average 4.25) internal successors, (119), 29 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:34,706 INFO L93 Difference]: Finished difference Result 738 states and 1274 transitions. [2022-07-13 02:27:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 02:27:34,706 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.25) internal successors, (119), 29 states have internal predecessors, (119), 0 states have call successors, (0), 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 [2022-07-13 02:27:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:34,709 INFO L225 Difference]: With dead ends: 738 [2022-07-13 02:27:34,709 INFO L226 Difference]: Without dead ends: 710 [2022-07-13 02:27:34,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2022-07-13 02:27:34,710 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1081 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:34,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 61 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:27:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-07-13 02:27:34,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 710. [2022-07-13 02:27:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 710 states have (on average 1.7352112676056337) internal successors, (1232), 709 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1232 transitions. [2022-07-13 02:27:34,724 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1232 transitions. Word has length 57 [2022-07-13 02:27:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:34,725 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1232 transitions. [2022-07-13 02:27:34,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.25) internal successors, (119), 29 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1232 transitions. [2022-07-13 02:27:34,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 02:27:34,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:34,728 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:27:34,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 02:27:34,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:34,943 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:34,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:34,944 INFO L85 PathProgramCache]: Analyzing trace with hash 366353335, now seen corresponding path program 3 times [2022-07-13 02:27:34,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:34,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876100510] [2022-07-13 02:27:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:34,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:35,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:35,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876100510] [2022-07-13 02:27:35,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876100510] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:35,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128390940] [2022-07-13 02:27:35,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:27:35,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:35,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:35,249 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) [2022-07-13 02:27:35,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 02:27:35,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 02:27:35,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:27:35,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-13 02:27:35,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:35,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-13 02:27:35,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 02:27:35,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-13 02:27:35,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-13 02:27:35,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 150 proven. 74 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2022-07-13 02:27:35,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 150 proven. 74 refuted. 0 times theorem prover too weak. 1154 trivial. 0 not checked. [2022-07-13 02:27:36,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128390940] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:27:36,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:27:36,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 6, 6] total 39 [2022-07-13 02:27:36,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798426024] [2022-07-13 02:27:36,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:27:36,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-13 02:27:36,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:36,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-13 02:27:36,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1029, Unknown=0, NotChecked=0, Total=1482 [2022-07-13 02:27:36,080 INFO L87 Difference]: Start difference. First operand 710 states and 1232 transitions. Second operand has 39 states, 39 states have (on average 3.7435897435897436) internal successors, (146), 39 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:36,996 INFO L93 Difference]: Finished difference Result 1223 states and 2043 transitions. [2022-07-13 02:27:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-13 02:27:36,996 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.7435897435897436) internal successors, (146), 39 states have internal predecessors, (146), 0 states have call successors, (0), 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 113 [2022-07-13 02:27:36,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:37,000 INFO L225 Difference]: With dead ends: 1223 [2022-07-13 02:27:37,001 INFO L226 Difference]: Without dead ends: 1221 [2022-07-13 02:27:37,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1572, Invalid=3540, Unknown=0, NotChecked=0, Total=5112 [2022-07-13 02:27:37,003 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 828 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:37,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 31 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 658 Invalid, 0 Unknown, 155 Unchecked, 0.3s Time] [2022-07-13 02:27:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2022-07-13 02:27:37,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 752. [2022-07-13 02:27:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 752 states have (on average 1.7247340425531914) internal successors, (1297), 751 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1297 transitions. [2022-07-13 02:27:37,076 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1297 transitions. Word has length 113 [2022-07-13 02:27:37,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:37,076 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1297 transitions. [2022-07-13 02:27:37,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.7435897435897436) internal successors, (146), 39 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1297 transitions. [2022-07-13 02:27:37,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 02:27:37,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:37,078 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1] [2022-07-13 02:27:37,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-13 02:27:37,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:37,278 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:37,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:37,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1325452891, now seen corresponding path program 4 times [2022-07-13 02:27:37,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:37,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734242599] [2022-07-13 02:27:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:37,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 0 proven. 1338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:37,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:37,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734242599] [2022-07-13 02:27:37,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734242599] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:37,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840225067] [2022-07-13 02:27:37,697 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:27:37,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:37,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:37,723 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) [2022-07-13 02:27:37,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 02:27:38,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:27:38,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:27:38,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-13 02:27:38,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 0 proven. 1338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:38,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1338 backedges. 0 proven. 1338 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:38,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840225067] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:27:38,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:27:38,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 56 [2022-07-13 02:27:38,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301908779] [2022-07-13 02:27:38,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:27:38,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-07-13 02:27:38,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:38,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-07-13 02:27:38,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2022-07-13 02:27:38,966 INFO L87 Difference]: Start difference. First operand 752 states and 1297 transitions. Second operand has 57 states, 56 states have (on average 4.267857142857143) internal successors, (239), 57 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:40,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:40,074 INFO L93 Difference]: Finished difference Result 1999 states and 3376 transitions. [2022-07-13 02:27:40,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-13 02:27:40,075 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 4.267857142857143) internal successors, (239), 57 states have internal predecessors, (239), 0 states have call successors, (0), 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 [2022-07-13 02:27:40,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:40,080 INFO L225 Difference]: With dead ends: 1999 [2022-07-13 02:27:40,081 INFO L226 Difference]: Without dead ends: 1943 [2022-07-13 02:27:40,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2022-07-13 02:27:40,082 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2808 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2808 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:40,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2808 Valid, 114 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 02:27:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2022-07-13 02:27:40,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1461. [2022-07-13 02:27:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1461 states have (on average 1.729637234770705) internal successors, (2527), 1460 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:40,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 2527 transitions. [2022-07-13 02:27:40,102 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 2527 transitions. Word has length 117 [2022-07-13 02:27:40,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:40,102 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 2527 transitions. [2022-07-13 02:27:40,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 4.267857142857143) internal successors, (239), 57 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:40,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 2527 transitions. [2022-07-13 02:27:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-13 02:27:40,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:40,105 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 52, 52, 3, 3, 3, 3, 1, 1, 1, 1] [2022-07-13 02:27:40,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 02:27:40,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-13 02:27:40,319 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:40,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:40,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1078449043, now seen corresponding path program 5 times [2022-07-13 02:27:40,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:40,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703342565] [2022-07-13 02:27:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:40,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 0 proven. 5790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:41,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:41,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703342565] [2022-07-13 02:27:41,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703342565] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:41,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612009958] [2022-07-13 02:27:41,451 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:27:41,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:41,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:41,452 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) [2022-07-13 02:27:41,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 02:27:44,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 53 check-sat command(s) [2022-07-13 02:27:44,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:27:44,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-13 02:27:44,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 0 proven. 5790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:44,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:27:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 0 proven. 5790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:47,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612009958] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:27:47,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:27:47,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 112 [2022-07-13 02:27:47,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286276547] [2022-07-13 02:27:47,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:27:47,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-07-13 02:27:47,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:27:47,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-07-13 02:27:47,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2022-07-13 02:27:47,557 INFO L87 Difference]: Start difference. First operand 1461 states and 2527 transitions. Second operand has 113 states, 112 states have (on average 4.133928571428571) internal successors, (463), 113 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:53,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:27:53,438 INFO L93 Difference]: Finished difference Result 3029 states and 5215 transitions. [2022-07-13 02:27:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-07-13 02:27:53,439 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 4.133928571428571) internal successors, (463), 113 states have internal predecessors, (463), 0 states have call successors, (0), 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 229 [2022-07-13 02:27:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:27:53,447 INFO L225 Difference]: With dead ends: 3029 [2022-07-13 02:27:53,447 INFO L226 Difference]: Without dead ends: 2917 [2022-07-13 02:27:53,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2022-07-13 02:27:53,450 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6066 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6066 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:27:53,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6066 Valid, 227 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 02:27:53,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-07-13 02:27:53,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2917. [2022-07-13 02:27:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2917 states have (on average 1.7302022625985602) internal successors, (5047), 2916 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 5047 transitions. [2022-07-13 02:27:53,493 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 5047 transitions. Word has length 229 [2022-07-13 02:27:53,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:27:53,493 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 5047 transitions. [2022-07-13 02:27:53,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 4.133928571428571) internal successors, (463), 113 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:27:53,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 5047 transitions. [2022-07-13 02:27:53,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-07-13 02:27:53,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:27:53,501 INFO L195 NwaCegarLoop]: trace histogram [111, 110, 108, 108, 3, 3, 3, 3, 1, 1, 1, 1] [2022-07-13 02:27:53,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-13 02:27:53,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:53,727 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:27:53,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:27:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2000137731, now seen corresponding path program 6 times [2022-07-13 02:27:53,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:27:53,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387303780] [2022-07-13 02:27:53,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:27:53,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:27:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:27:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 24102 backedges. 0 proven. 24102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:27:57,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:27:57,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387303780] [2022-07-13 02:27:57,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387303780] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:27:57,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880529277] [2022-07-13 02:27:57,841 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:27:57,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:27:57,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:27:57,843 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) [2022-07-13 02:27:57,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 02:27:58,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-07-13 02:27:58,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:27:58,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-13 02:27:58,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:27:58,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-13 02:27:58,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 02:27:58,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-13 02:27:58,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-13 02:27:58,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-13 02:27:58,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-07-13 02:28:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 24102 backedges. 217 proven. 987 refuted. 0 times theorem prover too weak. 22898 trivial. 0 not checked. [2022-07-13 02:28:00,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:28:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 24102 backedges. 217 proven. 987 refuted. 0 times theorem prover too weak. 22898 trivial. 0 not checked. [2022-07-13 02:28:01,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880529277] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:28:01,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:28:01,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 12, 12] total 135 [2022-07-13 02:28:01,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832414365] [2022-07-13 02:28:01,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:28:01,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2022-07-13 02:28:01,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:01,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2022-07-13 02:28:01,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6524, Invalid=11566, Unknown=0, NotChecked=0, Total=18090 [2022-07-13 02:28:01,929 INFO L87 Difference]: Start difference. First operand 2917 states and 5047 transitions. Second operand has 135 states, 135 states have (on average 3.7555555555555555) internal successors, (507), 135 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:28:09,938 INFO L93 Difference]: Finished difference Result 4799 states and 8145 transitions. [2022-07-13 02:28:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-07-13 02:28:09,939 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 3.7555555555555555) internal successors, (507), 135 states have internal predecessors, (507), 0 states have call successors, (0), 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 453 [2022-07-13 02:28:09,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:28:09,966 INFO L225 Difference]: With dead ends: 4799 [2022-07-13 02:28:09,967 INFO L226 Difference]: Without dead ends: 4797 [2022-07-13 02:28:09,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 888 SyntacticMatches, 5 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6601 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=13359, Invalid=28053, Unknown=0, NotChecked=0, Total=41412 [2022-07-13 02:28:09,970 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5134 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5134 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 284 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:28:09,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5134 Valid, 65 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1869 Invalid, 0 Unknown, 284 Unchecked, 1.3s Time] [2022-07-13 02:28:09,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2022-07-13 02:28:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 4752. [2022-07-13 02:28:10,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4752 states have (on average 1.7009680134680134) internal successors, (8083), 4751 states have internal predecessors, (8083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 8083 transitions. [2022-07-13 02:28:10,074 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 8083 transitions. Word has length 453 [2022-07-13 02:28:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:28:10,074 INFO L495 AbstractCegarLoop]: Abstraction has 4752 states and 8083 transitions. [2022-07-13 02:28:10,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 135 states have (on average 3.7555555555555555) internal successors, (507), 135 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:28:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 8083 transitions. [2022-07-13 02:28:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-07-13 02:28:10,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:28:10,097 INFO L195 NwaCegarLoop]: trace histogram [111, 110, 109, 109, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:28:10,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 02:28:10,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:28:10,312 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:28:10,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:28:10,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2000258694, now seen corresponding path program 1 times [2022-07-13 02:28:10,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:28:10,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851045383] [2022-07-13 02:28:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:10,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:28:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 24204 backedges. 0 proven. 24204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:14,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:28:14,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851045383] [2022-07-13 02:28:14,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851045383] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:28:14,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186011701] [2022-07-13 02:28:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:28:14,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:28:14,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:28:14,358 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:28:14,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 02:28:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:28:15,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 3284 conjuncts, 113 conjunts are in the unsatisfiable core [2022-07-13 02:28:15,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:28:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 24204 backedges. 0 proven. 24204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:15,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:28:22,254 INFO L134 CoverageAnalysis]: Checked inductivity of 24204 backedges. 0 proven. 24204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:28:22,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186011701] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:28:22,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:28:22,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112, 112] total 224 [2022-07-13 02:28:22,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947528676] [2022-07-13 02:28:22,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:28:22,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 225 states [2022-07-13 02:28:22,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:28:22,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2022-07-13 02:28:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2022-07-13 02:28:22,282 INFO L87 Difference]: Start difference. First operand 4752 states and 8083 transitions. Second operand has 225 states, 224 states have (on average 4.125) internal successors, (924), 225 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:27,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:29:27,260 INFO L93 Difference]: Finished difference Result 7896 states and 13475 transitions. [2022-07-13 02:29:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-07-13 02:29:27,261 INFO L78 Accepts]: Start accepts. Automaton has has 225 states, 224 states have (on average 4.125) internal successors, (924), 225 states have internal predecessors, (924), 0 states have call successors, (0), 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 459 [2022-07-13 02:29:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:29:27,276 INFO L225 Difference]: With dead ends: 7896 [2022-07-13 02:29:27,276 INFO L226 Difference]: Without dead ends: 7672 [2022-07-13 02:29:27,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=25200, Invalid=25200, Unknown=0, NotChecked=0, Total=50400 [2022-07-13 02:29:27,279 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 15779 mSDsluCounter, 3582 mSDsCounter, 0 mSdLazyCounter, 3607 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15779 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:29:27,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15779 Valid, 451 Invalid, 3722 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 3607 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 02:29:27,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7672 states. [2022-07-13 02:29:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7672 to 5881. [2022-07-13 02:29:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5881 states, 5881 states have (on average 1.7281074647168848) internal successors, (10163), 5880 states have internal predecessors, (10163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 10163 transitions. [2022-07-13 02:29:27,358 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 10163 transitions. Word has length 459 [2022-07-13 02:29:27,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:29:27,359 INFO L495 AbstractCegarLoop]: Abstraction has 5881 states and 10163 transitions. [2022-07-13 02:29:27,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 225 states, 224 states have (on average 4.125) internal successors, (924), 225 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:29:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 10163 transitions. [2022-07-13 02:29:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2022-07-13 02:29:27,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:29:27,381 INFO L195 NwaCegarLoop]: trace histogram [223, 222, 222, 222, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:29:27,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 02:29:27,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-13 02:29:27,596 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-07-13 02:29:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:29:27,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1204134339, now seen corresponding path program 2 times [2022-07-13 02:29:27,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:29:27,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055934256] [2022-07-13 02:29:27,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:29:27,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:29:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:29:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 98790 backedges. 0 proven. 98790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:29:44,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:29:44,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055934256] [2022-07-13 02:29:44,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055934256] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:29:44,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282365130] [2022-07-13 02:29:44,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:29:44,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:29:44,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:29:44,514 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:29:44,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 02:29:45,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:29:45,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:29:45,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 6410 conjuncts, 225 conjunts are in the unsatisfiable core [2022-07-13 02:29:45,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:29:46,909 INFO L134 CoverageAnalysis]: Checked inductivity of 98790 backedges. 0 proven. 98790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:29:46,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:30:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 98790 backedges. 0 proven. 98790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:30:27,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282365130] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:30:27,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:30:27,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [224, 224, 224] total 448 [2022-07-13 02:30:27,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464593663] [2022-07-13 02:30:27,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:30:27,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 449 states [2022-07-13 02:30:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:30:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 449 interpolants. [2022-07-13 02:30:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100576, Invalid=100576, Unknown=0, NotChecked=0, Total=201152 [2022-07-13 02:30:27,484 INFO L87 Difference]: Start difference. First operand 5881 states and 10163 transitions. Second operand has 449 states, 448 states have (on average 4.053571428571429) internal successors, (1816), 449 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)